Techlog Connector for Studio 2013 User Guide - Ocean ...

Techlog Connector for Studio 2013 User Guide 

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express prior written permission of Schlumberger. Other company, product, and service names are the 

properties of their respective owners. An asterisk (*) is used throughout this document to designate a mark 

of Schlumberger. 

Techlog Connector for Studio name and logo are marks for Schlumberger. 

Developed in France with Finland and US content. 

Schlumberger Public – Customer Use Page | 2


Table of Contents 

Information Resources ........................................................................................................................... 4 

Schlumberger Product Documentation .............................................................................................. 4 

Contacting Schlumberger ................................................................................................................... 5 

Distribution and Licensing ...................................................................................................................... 6 

Distribution ......................................................................................................................................... 6 

Licensing ............................................................................................................................................ 6 

System Requirements ............................................................................................................................ 7 

Installation .......................................................................................................................................... 7 

Overview ................................................................................................................................................ 8 

Available workflows ............................................................................................................................ 8 

Launching the Techlog Connector for Studio ..................................................................................... 9 

Alignment with Techlog reference data .............................................................................................. 9 

Main Techlog Connector for Studio window ..........................................................................................11 

Import tab layout ...............................................................................................................................11 

Export tab layout ...............................................................................................................................17 

Find workflow with Techlog project data ...............................................................................................20 

Find workflow overview .....................................................................................................................20 

Indexing Techlog project ...................................................................................................................21 

Enable Find workflows within the Studio Manager ............................................................................24 

Enable Find workflows within Petrel ..................................................................................................25 

Search Data within Find ....................................................................................................................25 

Results pane in Find .........................................................................................................................27 

Visualizing Techlog wells in Petrel 3D window ..................................................................................28 

Loading data from Find results ..........................................................................................................28 

Using Techlog Connector for Studio .....................................................................................................30 

Launching Techlog Connector for Studio window .............................................................................30 

Connecting to a Techlog project and partial project loading ..............................................................30 

Viewing Techlog project data on Import tab ......................................................................................30 

Data load warnings and errors ..........................................................................................................32 

Techlog and Petrel well mapping for Import ......................................................................................33 

Importing well logs ............................................................................................................................38 

Managing the Log mapping tab .........................................................................................................41 

Importing formation dip results ..........................................................................................................45 

Importing borehole images ................................................................................................................47 

Importing fluid contacts .....................................................................................................................48 

Exporting well tops ............................................................................................................................50 

Appendix A: Techlog features aligned with Techlog Connector for Studio 2013 ...................................54 

Spatial reference data in Techlog .....................................................................................................54 

Azimuthal reference property (effective Techlog 2012.1) ..................................................................54 

Final data status property python script (effective Techlog 2012.1) ..................................................55 

Appendix B: Techlog to Petrel units equivalence table .........................................................................56 


Schlumberger Product Documentation 

About Schlumberger 

Schlumberger is the leading oilfield services provider, trusted to deliver superior results and improved E&P 

performance for oil and gas companies around the world. Through our well site operations and in our 

research and engineering facilities, we develop products, services, and solutions that optimize customer 

performance in a safe and environmentally sound manner. 

Online Documentation 

Documentation is provided in the following electronic formats via the listed location: 

 

 

Techlog Connector for Studio 2013 Installation and Licensing Guide (Adobe ® Acrobat ® PDF file): 

https://support.slb.com. 

Techlog Connector for Studio 2013 User Guide. 

You can use Adobe ® Reader to read the PDF file. Adobe Reader installation programs for common 

operating systems are available for a free download from the Adobe web site at www.adobe.com. 

Typestyle Conventions 

The following conventions are observed throughout this guide: 

 

 

 

Bold text is used to designate file and folder names, dialog titles, names of buttons, icons, and 

menus, and terms that are objects of a user selection. 

Italic text is used for word emphasis, defined terms, and manual titles. 

Monospace text (Courier) is used to show literal text as you would enter it, or as it would appear 

onscreen. 

Alert Statements 

The alerting statements are Notes, Cautions, and Warnings. These statements are formatted in the 

following style: 

 

 

 

Note: Information that is incidental to the main text flow or to an important point or tip provided in 

addition to the previous statement or instruction 

Caution: Advises of machine or data error that could occur should the user fail to take or avoid a 

specified action 

Warning: Requires immediate action by the user to prevent actual loss of data or where an action 

is irreversible, or when physical damage to the machine or devices is possible


Contacting Schlumberger 

Technical Support 

Schlumberger has sales and support offices around the world. For information on contacting Schlumberger, 

please refer to the information below. 

For Technical Support for SIS software: 

 

 

 

Contact the Schlumberger Information Solution Customer Care Center 

(customercarecenter@slb.com), mentioning the Techlog Connector for Studio 2013 

Visit the support portal: https://support.slb.com 

Visit the Schlumberger public page: www.slb.com 



Distribution 

The Techlog Connector for Studio 2013 release is available by download using the appropriate links on the 

Schlumberger Information Solutions (SIS) Software Download Center. A user account is required for 

access to the center. If you do not already have a user account, you can register to access the Software 

Download Center at https://support.slb.com. 

Licensing 

To run the Techlog Connector for Studio, you need valid licenses. 

As a minimum, you must have a Petrel core license (Geoscience, Reservoir engineering, or combined). 

Additionally, you must have a Techlog Connector for Studio license. 

To create and manage Techlog Connector for Studio indexes, you must have a Studio Manager license 

and a Techlog base license. 

The licenses can be configured either locally on your computer or on a central license server. You can 

obtain valid licenses: 

 

 

On the Ocean Store at http://www.ocean.slb.com 

Through your SIS sales representative 



To use the Techlog Connector for Studio 2013, you must have Petrel 2013 installed. 

To run the indexing part of the Techlog Connector for Studio, you must have Studio Manager 2013 installed 

and a connection to a Studio database. Techlog Connector for Studio has no other system requirements 

other than the minimum hardware and software requirements for Petrel 2013 and Studio Manager 2013. 

Installation 

To use the Techlog Connector for Studio standalone, you need to install the Techlog Connector for Studio 

2013 installer with Petrel 2013. 

To use the Techlog Connector for Studio within the Find workflows, you need to install: 

Techlog Connector for Studio 2013 installed in Petrel 2013 

Techlog Connector for Studio 2013 [project indexer] installed in Studio Manager 2013 

Have a connection to a Studio Database 

For more information, please refer to the Techlog Connector for Studio 2013 installation Guide. 



The Techlog Connector for Studio 2013, previously named Techlog Link plugin for Petrel, provides the 

ability to exchange data directly between Petrel and Techlog, without using third party applications. It 

enables collaboration between the reservoir earth model domain and the wellbore centric domain by 

sharing results and interpretation between Petrel and Techlog. 

Available workflows 

The Techlog Connector for Studio 2013 allows you to use the Find workflows with Techlog data (locate and 

load). It can be used also as a standalone plug-in to transfer data between Petrel 2013 and Techlog 

projects. 

Using the Techlog Connector for Studio with Find workflows 

Find was introduced in Petrel 2011. This feature allows you to: 

 

 

 

 

Create, import and read indexes 

Search for Data 

List and Visualize Search Results 

Choose and Load Search Results 

The Techlog Connector for Studio 2013 enables you to: 

 

 

 

Index Techlog projects in the Studio Manager 

Include them in the Find Filters listing 

Locate spatially-defined wells from the Techlog projects 

Note: 

You can find (and even load) non-spatial Techlog wells too. You just cannot visualize them as 

Find results in the Petrel 2D/3D window. 

When you click the Techlog wells to load, you can: 

 

 

Take advantage of the Silent mode loading without opening the Techlog Connector for Studio 

interface 

Be directed to the Techlog Connector for Studio to revise your data selection or to resolve any load 

warnings or errors 

Using the Standalone Techlog Connector for Studio 

You can: 

 

 

Use the Techlog Connector for Studio in standalone workflows outside of Find in Petrel 

Open the Techlog Connector for Studio from the main Petrel File menu or from the main toolbar 

The main Connector interface includes an import list next to the Project browser. This import stores the 

data you click to load. The 2013 plug-in version added concept of data load warnings and errors which 

indicate any issues related to the well mappings or to the well log settings. You have the tools to address 

and to resolve these load warnings and errors in the Techlog Connector for Studio interface before loading 

data. 



Data types available for transfer 

You can share interpretation data between geoscientists across data platforms: 

 

 

Promotes a unified understanding of the reservoir by avoiding to duplicate interpretations 

Increases dialog within the asset team 

The additional benefits of this module are: 

 

 

 

The simplification of data transfer between the Petrel and Techlog platforms 

The use of Petrel and Techlog API which ensures the correct mapping of data between the 

applications and insulates customers from underlying changes to internal application data models 

The extensible and flexible implementation which provides scope for incorporation of additional 

data exchange items 

The data types supported: 

 

 

When importing data from Techlog to Petrel: 

Wells, well trajectory, wellhead X and Y location 

Logs: one-dimensional numerical log curves 

Borehole image 

Dip angle and dip azimuth interpretation results 

Fluid contacts 

When exporting data from Petrel to Techlog: 

Well tops 

Petrel grid model segments and zone name (for contacts import) 

Launching the Techlog Connector for Studio 

You can open the Techlog Connector for Studio window from two different locations: 

 

 

From the main Petrel window File menu, click the Techlog Connector for Studio. 

By clicking the icon on the Techlog Connector toolbar. This toolbar is displayed by default and you 

can disable it under the main Petrel window View context menu. 

Alignment with Techlog reference data 

The Techlog Connector for Studio update recognizes and benefits from several spatial reference 

improvements added to the Techlog platform. Refer to Appendix A: Techlog features aligned with the 

Techlog Connector for Studio 2013 or the Techlog platform Help manual for more information. 

Spatial reference data in Techlog 

The spatial reference data in Techlog is defined as: 

 

 

 

 

Wellhead XYs 

Wellhead latitude and longitude 

Coordinate reference system 

Survey azimuthal reference and elevation 

The concept of coordinate reference system corrections was Techlog 2012.1. The survey azimuthal 

reference definition has been added in Techlog 2012.1 and is defined at the well level. More information on 

the Techlog spatial reference data can be found in Appendix A, in the Spatial reference data in Techlog 

section. 



Techlog well survey, wellpath, and Index datasets 

The survey, wellpath, and index datasets are standard datasets in Techlog. However, several 

improvements were made in Techlog 2012.1 to better specify the wellpath and survey reference data that 

define the index dataset. You can find more information on these improvements in Appendix A, in the Well 

survey, wellpath, and Index datasets section. 

Data status property Python script 

This python script, SetDataStatusProperty.py for variable, allows the Techlog user to label their computed 

data results in a way that can be communicated to the Find user in Petrel. This python script was deployed 

with Techlog 2012.1. You can find more information on how to use this workflow in Appendix A, in the Final 

data status property python script section. 

You can use the SetDataStatusProperty.py python script in previous versions of Techlog as well. If you do 

not have access to Techlog 2012.1, contact the Schlumberger Information Customer Care Center 

(customercarecenter@slb.com) to get this python script and import it into your current Techlog version. 



Import tab layout 

The main Techlog Connector for Studio window has two main tabs: 

 

 

Import tab 

Export tab 

Several improvements around data integrity and usability were added to the Import tab workflows. The 

main tabs were reordered based on priority of use. 

Techlog project directory 

The Techlog project directory field displays the path to your chosen Techlog project. You are connected 

to the same Techlog project whether you are on the Import tab or on the Export tab. 

Refer to section Connecting to a Techlog project and partial project loading for more information on how to 

choose a Techlog project and using the partial project loading feature on this Import tab. 

Project browser 

The Project browser displays the data tree from the Techlog project in the same data hierarchy: 

 

 

 

Wells 

Datasets 

Variable 



From the Project browser, you can navigate the data using the keyboard arrow keys or the mouse. 

 

 

 

You cannot load all of the Techlog data types into Petrel because there is a limited data footprint. 

The wells and the data items that you can load into Petrel are displayed with black normal font. 

You can add them to the Data selected for Import list, located on the right side of the Project 

browser. 

Any data that you cannot load into Petrel are displayed with a gray font and you cannot add them 

to the Import list. You cannot click this unloadable gray data for display in the Log mapping tab 

or in the Data view tab. It is displayed to show all the data available in the Techlog project. 

You can use the concept of load warnings and load errors. 

 

 

 

This concept helps you to identify any Techlog data that is missing data or other information before 

loading the data 

The load warnings and load errors are identified by font colors when the data was moved to the 

Import list 

When the Import list is enabled, you can identify specific information about load warnings and load 

errors on both the Well mapping tab and the Log mapping tab 

You can find more information about load warnings and load errors in section Data load warnings and errors. 

You can use the context menu in the Project browser to either create: 

 

 

A filter 

A conditional selection 

Refer to section Project browser for more information on the Project browser context menus. 

Import list (Data selected for import) 

This Import list is: 

 

 

An addition to the main Techlog Connector for Studio window 

A subset of the data in the connected Techlog project 

1. Click the wells or the data that you want to import from the Project browser. 

2. Move the clicked wells/data to the Import list. 

Only the Techlog data located in the Data selected for Import list window are imported into Petrel. 

The concepts of load warnings and load errors were added in the 2012.1 version: 

 

 

 

 

 

 

 

This concept helps you to identify any Techlog data that is missing data or other information before 

loading the data. 

You can visualize these load warnings and load errors when the wells and the log data are added 

to the Import list. They are represented by the use of colored fonts and normal versus bold font 

styles. 

The data load warnings are represented by a golden font color. 

The data load errors are represented by a red font color. 

Bold font styles are reserved for the actual data object with the warning or the error. 

A parent of a data item with a warning or an error inherits the warning or the error font color of its 

child. Therefore, when the data tree in the Import list is minimized, you can still see where the 

warnings and errors are located in the data tree. For example, if a dataset has a well log variable 

with a load warning, the font of that data object is displayed in bold gold font to represent this 

warning. 

The dataset name inherits its child gold font color. 



When the Import list is active, you can identify specific information: 

 

 

About load warnings and load errors 

In both the Well mapping tab and the Log mapping tab 

Refer to section Data load warnings and errors for more information. 

You can use the context menu in the Import list to: 

 

 

 

Create a filter 

Create a conditional selection 

Remove some clicked items from this Import list 

When you remove some items from the Import list, they are: 

 

 

Removed from the Log mapping tab or the Well mapping tab 

Not removed from the Techlog project itself 

Refer to section Project browser for more information on the context menus of the Import list. 

Well mapping tab 

The Well mapping tab is used to manage the mapping between Techlog and Petrel wells. 

 

 

 

 

 

 

 

 

 

 

The Techlog spatial reference data was added to this Well mapping tab display 

The load warnings and load errors associated with the Techlog well mapping or spatial reference 

data are displayed on this tab 

You cannot import any of the Techlog data in the Import list until all of the load warnings and load 

errors were either addressed or removed from the Import list 

When the focus is on the Project browser, all of the Techlog wells in the Project browser are 

listed 

When the Import list is enabled, the Well mapping tab lists all of the Techlog wells that were 

added to the Import list 

If you have filtered the list of wells in the Import list, only these filtered wells are listed in the Well 

mapping tab 

If you filtered the list of wells in the Project browser, only these filtered wells are listed in the Well 

mapping. This plug-in release also made improvements in your privileges and persistence of the 

Techlog to Petrel well mappings. 

The concept of strong well mappings along with the attribute well mappings was added. 

You can only commit the strong well mappings with a plug-in user with administrator privileges. 

A regular plug-in user cannot commit or revise a strong well mapping, but you can use the strong 

well mappings set by the administrator. This allows an asset team to have more control over 

managing their well mappings between Techlog and Petrel projects. 

The following data is displayed in the Well mapping tab: 

 

 

 

 

 

Techlog well name 

Petrel well name 

Techlog azimuth reference 

Techlog elevation 

Techlog coordinate reference system 

Refer to section Techlog and Petrel well mapping for Import to find more information. 



Log mapping tab 

The Log mapping tab: 

 

 

 

Displays the information for the well logs clicked in either the Project browser or the Data 

selected for Import list 

Manages the pairing between the well log Techlog family and Petrel template and their units 

Displays the load warnings and load errors associated with the Techlog well logs 

You cannot import any of the Techlog data in the Import list until all of the load warnings and load errors 

are either resolved or removed from the Import list (refer to section Managing the Log mapping tab for 

more information). 

The following data is displayed in the Log mapping tab, one row per well log: 

 

 

 

 

 

 

 

Techlog well/dataset 

Techlog log name 

Techlog family 

Petrel template 

Global well log (GWL) 

Techlog unit 

Petrel unit 

You can sort most columns alphabetically by clicking the column header. Each dataset reference log curve 

is displayed in the Project browser and in the Import list. But this reference curve is not considered as a 

separately loaded well log and is not displayed in the Log mapping tab. 

 

 

 

 

The Log mapping tab data table can display the well logs clicked from the data tree in either the 

Project browser list or the Data selected for Import list 

You can enable only one of these window lists at a time (it is indicated by the black border) 

When the Project browser is the active window, the clicked data that appears in the Log 

mapping tab is read-only 

When the Import list is the active window, the Log mapping tab data table displays the same 

information as before, but with more information related to the load warnings and errors and the 

tools to resolve them 

You can display the following data from the Log mapping tab by individually choosing them by left-clicking 

the data trees while holding the Ctrl key: 

 

 

 

Log data from multiple wells 

Multiple datasets 

Multiple well logs 

You can choose a group of data in either window by clicking the data with a left-click while holding the Shift 

key. 

 

 

When choosing a group of data with a left-click while holding the Shift key, you must click a data 

from a same data tree hierarchy level 

You can also click Ctrl to make your data selection 

The data displayed in the Project browser with a gray font indicates data that is unloadable into Petrel. 

Note: 

Clicking unloadable data does not display details in the Log mapping tab. No data are displayed 

in the Log mapping tab when either the contact dataset or the image file data type are clicked in 

the Project browser or Import list. 

Refer to section Managing the Log mapping tab for more information. 



Data view tab 

The Data view tab allows you to: 

 

 

 

 

 

 

 

Display the values for the well logs clicked in either the Project browser or the Import list 

Display the well log data values for individual or all the well logs per dataset 

Click the data at either the dataset or the well log level 

Click multiple well logs while holding the Ctrl key thanks to the usability improvements 

Click a group of data listed in a dataset by left-clicking the data while holding the Shift key 

Display the well log values in several pages, and you can step through each page using the arrows 

and controls at the bottom of the Data view tab 

Clicking a well or a group does not display its data as the Data view tab is limited to show data per 

dataset 

Image view tab 

The Image view tab allows you to: 

 

 

 

Display the clicked Techlog borehole images and the core images of the variable type borehole 

image 

Can only view one borehole image at a time, and view multiple image files located in the same 

dataset 

Display the first borehole image variable listed in the dataset if you click the borehole image 

dataset 

Note: 

It does not use the core images aspect ratio, therefore core images appear horizontally stretched, 

but they still transfer to Petrel with the correct aspect ratio. 

The Techlog Connector for Studio does not display or transfer the borehole image array data. If your 

Techlog project only has borehole image array data, you must convert them to borehole image format in 

the Techlog project before transferring these data. 

1. Open the project in Techlog. 

2. Click the borehole array variable in the Project browser. 

3. Right-click the image array variable and click raster image conversion. 

This raster image is the borehole image format that you can visualize in the plug-in Image view tab 

and you can transfer it to Petrel. 

Properties tab 

 

 

 

Settings tab 

The Properties tab displays different information about the data objects clicked from either the 

Project browser or the Import list 

Different information is displayed for the data types variables, datasets, wells, and groups 

The well list of properties now includes the name of the trajectory dataset that contains the 

trajectory imported for the Petrel wells 

The Settings tab displays a few options for settings to apply to the data load session. 

Trajectory dataset: 

 

 

This field represents the name of the dataset that the connector primarily looks for so as to build 

the corresponding Petrel well trajectory 

The default value is Index (refer to Importing new wells and trajectories for more information) 



Partial project loading: 

The Partial project loading functionality is not checked by default. When you check the box: 

1. Click Browse to open a Techlog project. 

An additional load window appears. 

2. From that Techlog project, click the wells that you want to view in the Techlog Connector for Studio 

Project browser. 

 

 

 

 

This feature is optional to use, but it can save time in loading a few wells from a larger Techlog 

project into the plug-in window. 

You are connected to the same Techlog project whether you are on the plug-in Import tab or the 

Export tab. 

The partial project load affects the wells listed in the Import tab Project browser. Therefore, you 

can export all Techlog wells in the project from the plug-in Export tab, even if you did not click 

them in partial project loading. 

When mapping Petrel wells on the Export tab, you have access to all Techlog wells in the 

connected project. 

Administrator mode: 

This plug-in version has added a level of administrator privileges for the well mapping: 

 

 

All users can enable and disable this administrator privileges by default 

You can manage who has these advanced well mapping privileges 

Refer to section Administrator management of strong well mapping privileges for more information. 

Note: 

Only the Trajectory dataset is included in the settings that are saved in the Petrel project. The 

Save button is not enabled for changes to the Partial project loading or Administrator mode 

settings. 

Settings tab: 

 

 

 

 

All of the Techlog project data is listed in the import Project browser window, and the unloadable 

data items are represented in a grey font color. 

The option to overwrite or splice the data on import was removed. We recommend that you splice 

the well logs in Techlog before importing them into Petrel. 

The dip datasets are treated like the other importable datasets (no recognition based on dip 

dataset name). 

The Target grid field required for importing contacts was replaced with the need for the Petrel user 

to set the receiving Petrel grid active (bold) in the Petrel Models pane before importing contacts. 



Export tab layout 

The following sections describe different parts of the Export tab features. 

Techlog project directory 

The Techlog project directory field displays the path to the Techlog project you clicked. You are 

connected to the same Techlog project whether you are on the Import tab or the Export tab. 

Refer to section Connecting to a Techlog project for more information on how to choose a Techlog project 

in the Export tab. 

Well(s) 

You find in this field the Petrel wells/group that you want to export to the connected Techlog project. You 

can transfer the following data from the Petrel well tops spreadsheet: 

 

 

 

 

 

 

 

 

MD 

TVDSS 

TVD 

TWT 

TVT 

TST 

Azimuth 

Inclination 

Refer to section Choosing Petrel well(s) for more information. 

Well tops set 

 

 

 

This is an optional setting 

If no well tops are specified in this field, all the well tops for the clicked well(s) are exported to 

Techlog 

If you want a specific Well top set for the well(s) exported to Techlog, specify in this field that 

specific well tops group 



Model pillar grid 

 

 

 

This is an optional setting. 

It is required if you want to later import contacts from Techlog to Petrel. 

The well tops for the wells specified are still transferred if a Petrel Model pillar grid is not defined 

here. However, when you additionally specify a Petrel Model pillar grid in this field, two more model 

data points per well top (fault block and zone name) are transferred to Techlog in the same well tops 

dataset. 

Refer to section Exporting additional Petrel model grid data points for more information on specifying this field. 

Techlog dataset name prefix 

 

 

 

This field indicates the prefix name of the exported Techlog dataset. 

The default value is PETREL. The well tops with this prefix are exported to Techlog as interval 

datasets named PETREL_Tops. 

Check the box to the right if you want the exported well tops to overwrite existing Techlog datasets 

with the same name. 

Refer to section Defining the Techlog dataset name for more information on these settings. 

Export window Data view tab 

This window displays the data values of the clicked well tops. You can expand the plus sign next to each 

well to list the individual well tops. For each well top, the following information is displayed: 

 

 

 

 

 

 

 

 

MD 

TVDSS 

TVD 

TWT 

TVT 

TST 

Azimuth 

Inclination 

When a Petrel Model pillar grid is provided, each well tops list the fault block and the zone name 

associated with these well tops points. 

These additional points are listed as: 

 

 

FAULTBLK 

ZONE_NAME 

Export window Wells mapping tab 

This subtab is used to pair the Petrel wells in the current Petrel project to the Techlog wells in the open 

Techlog project. 

The Wells mapping tab lists: 

 

 

All the clicked Petrel wells in the first column 

All available wells in the Techlog project connected at the top of this Connector window in the second 

column 

Refer to section Techlog and Petrel well mapping for Import for more information. 



You can: 

 

 

 

Click the green/blue/brown icon in the lower left corner below this Wells mapping tab completes 

an auto mapping for the Petrel and Techlog well names. 

Click the red X icon sets all the Techlog wells to and no data are transferred for these 

wells. 

Map manually the wells you want to transfer. This might be useful when you want to only transfer 

the well tops data from a few wells in the list. 



Find workflow overview 

Find provides the revolutionary capability of quickly and transparently browsing data across the enterprise 

in a seamless and intuitive manner. 

 

 

 

 

Using Find, you can filter data to focus on data of interest in the context of your work 

Import this data for rapid project startup or for understanding the data and knowledge available in 

your area of interest 

Find interface facilitates searching, viewing, filtering, retrieving information without having to 

understand where the data is stored 

After searching, viewing, filtering, and identifying information of interest, you can import the 

information into your local project to begin or to continue working 

Find provides easy, standalone administration tools for administrators to configure and manage access to 

relevant knowledge repositories. 

Find offers the following key benefits: 

 

 

 

 

 

 

Map layer integration into 2D and 3D windows to facilitate intuitive browsing of data on GIS layers 

from any web- or ArcGIS-based service 

Filter-based groupings of search results according to the familiar Input tree structure, by project or 

object 

Dynamic, interactive, and combinable filters that allow you to filter by keyword, data type, project, 

template, depths, date range, color, users, and other criteria 

Real-time refreshing of data when filters are applied to search results 

Zooming and panning with or without map-based layers, resulting in increased or decreased levels 

of graphical and object detail and attribute-based information 

Ability to load data in your search results into your local project 

The Find feature allows the Petrel user to: 

 

 

 

 

Create, import and read indexes 

Search for data 

List and visualize search results 

Choose and Load search results 

The Techlog Connector for Studio 2013: 

 

 

Enables you to index Techlog projects 

Allows Techlog data indexes to be included in the Find workflows 

Both Techlog Connector for Studio and Techlog project indexers must be installed with Petrel and Studio 

Manager. After you indexed the Techlog projects using Studio Manager, you can: 

 

 

Specify Techlog project indexes for Search 

View Techlog project index contents in: 

Find filters pane 

Results pane 

A 2D or 3D window 

The Techlog wells that meet the Find filter criteria are listed in the Find results pane. 



When you click any Techlog wells to load into your Petrel project, there is a Studio load interface which 

displays the Techlog wells and its well log data that was clicked to load. 

 

 

 

If this is the only Techlog data you want to load at this point, you can proceed using the Silent 

mode loading option 

With the silent mode enabled, the Techlog data is loaded into Petrel without the Techlog 

Connector for Studio interface opening 

If you disable the Silent mode loading, proceed through the load wizard, the Techlog Connector 

for Studio window opens with the same data selection already preselected 

The Techlog Connector for Studio is the acting data loader for loading Techlog data from Find in Petrel, no 

matter if the Silent mode loading is used or not. 

The data load warnings and load errors concept complements the Silent mode loading feature. 

After you clicked the Techlog data to load, the data is passed through some logic to test if all the Techlog 

wells or its data are missing any settings or mappings. 

The missing settings or the missing data are identified as either: 

 

 

You can: 

 

 

A data load warning 

A data load error 

Confirm any suggested settings 

Resolve the missing data settings in the plug-in interface before loading the data, in some cases 

Refer to section Data load warnings and errors for more information. 

Indexing Techlog project 

You can use the Index Schedules app in the Studio Manager to: 

 

 

 

 

Set up and Manage indexing service 

Create and manage data sources and data environments 

Schedule and run indexing 

Manage indexes 



1. In the App Gallery, under Administer, click Index Schedules. 

2. At the bottom of the Index Schedules pane, click User. 

3. In the Username and Password boxes, enter your credentials. 

Note: 

4. Click Save. 

You must enter your user name in the format domain name\username. 

A data environment is a logical grouping of data sources. Each data environment can contain an unlimited 

number of Techlog projects, and/or unlimited number of Petrel projects and/or a maximum of one Studio 

database repository. 

1. Open Studio Manager 2013. 

2. Connect to a Studio database. 

3. Launch the Index Schedules app under the Administer category. 

4. Create a Data environment by clicking the green star icon. 

5. Type in a new name and click the Save icon. 

6. Click the Add Source icon and click Techlog project to add the Techlog project source. 

7. In the table, click the row for the data source that you added. 

8. Configure the data source by completing the fields in the pane to the right of the table. 

9. Click Save. 

There are two license checks on this Data source properties panel. Both must have a green check and 

OK result to index a Techlog project: 

 

 

 

 

You must have a Techlog tlBase license version 2012.1 or newer to index a Techlog project. 

You do not need to deploy Techlog itself to index a Techlog project. 

You can index all the Techlog project versions. 

You must configure the Service user to be the same account you are currently logged in as. If this 

is not the case, the Indexing service user check (see picture above) fails. In particular, the Service 

user is set to LocalSystem by default – you must change this to be the current login account. 



1. In the App Gallery, under Administer, click Index Schedules. 

2. In the Data environment box, click the data environment that contains the data source(s) that you 

want to index now. 

3. In the table, click the data source, and then click Run indexing now for selected data sources. 

Note: 

The Techlog project indexer works in a single-user mode. Therefore, you cannot access a Techlog 

project while someone else is using it. If another program (for example, a Techlog session or a 

Petrel Techlog Connector for Studio session) already has the data source of the project opened, 

the indexing session cannot be launched. A message saying that the project cannot be accessed 

for indexing at that time appears into the data source of the Log. Techlog Find indexing sessions – 

whether initiated by the end-user or scheduled to run unattended – do not launch when they find 

the Techlog project already in use. 

 

 

 

 

You can also schedule indexing on regular timing. 

Indexes are updated automatically from the parameters entered in the data source properties 

window 

The schedule settings can be modified at any time or disabled. 

If you update or delete the project data, the data index is out of synchronization and does not 

represent the project changes. You must update it by launching a new indexing run. 

After the Techlog project is indexed: 

 

 

 

Any Petrel user can read these Techlog project indexes with no other Techlog platform licensing 

Any Petrel user can even read and search through these Techlog project indexes offline 

When the Petrel user wants to load any data from a Techlog project index, he/she must be 

connected to the network path of the Techlog project listed in the data index 

Using the Final Data status property from Techlog projects Properties window 

It is optional to enable this checkbox. 

The Techlog user: 

 

 

If the user uses the SetDataStatusProperty.py python script in Techlog, the user can use this well 

log property as a filter to only index the Techlog data in the Techlog project with a specific property 

value 

For example, if the user runs this python script that adds a property to each of their Final 

interpretation well logs, he/she can only index the well log variables in the Techlog well that has a 

Data status property value of Final 



The Petrel user: 

When the Petrel user clicks the Techlog data index in Find, because the user only indexed the Techlog well 

log variables specifically with the Data_status property value of Final, then he only sees the Final Techlog 

well log variables in this Techlog project index, reducing the confusion of which Techlog data must be 

loaded into Petrel. 

Refer to section Appendix A, in the Final data status property python script for more information on this 

SetDataStatusProperty.py python script. 

Spatial reference selections for indexing 

 

 

When you are viewing Techlog project index contents in a Petrel 2D or 3D window, you can visualize or 

not the Techlog wellhead and its trajectory. It depends on the Techlog well having its coordinate 

reference system and/or its azimuth reference defined in the Techlog project index. 

For legacy Techlog projects, you can assign some of these spatial definitions to the wells for their 

Techlog project index only. If either of these settings is already defined for a well in the Techlog project, 

these selections do not override the spatial information already defined for that well in the Techlog 

project. 

The options for the default Coordinate reference system (CRS) come from the same list of CRS available 

in Petrel. The options for the azimuthal reference are: 

 

 

 

Undefined 

True North 

Grid North 

These values are not read from the Techlog project and they do not override any well spatial settings 

already defined in the Techlog project. 

These two spatial selections are only applied to: 

 

 

Any Techlog well that is missing this spatial information 

The data index for that Techlog project 

These spatial data settings are not written back to the Techlog project. It is recommended to define any 

missing spatial reference data in the original Techlog project: 

 

 

If any of this spatial data is not defined in the Techlog project 

If the Techlog version permits 

Enable Find workflows within the Studio Manager 

Find workflows are enabled within the Studio Manager. The Find app provides easy visualization and 

filtering capabilities for large quantities of data. You can use Find to quickly browse the data in indexes 

created using the Index Schedules and Indexes apps, as well as to filter datasets and identify potential 

problems. You can launch the Data Table directly from Find to edit and correct the data in context. 



You can use the 2D Viewer and 3D Viewer to visualize data such as Find search results, selected items in 

the Data Table, and map services. After you set a path to a Petrel project with map services, you can view 

your data in its spatial context using maps. By visualizing data, you can observe inconsistencies and details 

that would go unnoticed if you observed them in only the Find Results pane or the Data Table, and you can 

better understand your data in context with other spatial information. 

Refer to the Studio Manager Help for more information. 

Enable Find workflows within Petrel 

Find needs to read indexes to search project data and provide results. 

You can manage which data environments and data indexes can be accessed in your Find session via the 

Search setting table. 

You can open the Studio Search setting table: 

 

 

From the main Petrel Tools menu 

Or by right-clicking the Find filter named Index and clicking Search settings 

From the top and left corner, you can: 

 

 

Import a data environment 

Enable which data indexes you want to have access to in the Find session 

You can also add an individual data index to this list, but it is recommended that you add a data 

environment because: 

 

 

It can contain multiple data indexes 

It is easier to manage 

In this Search settings table, put a check next to the Find project indexes you want to have access to 

during your Find session. 

Even if a data index is enabled in this Search settings table, you can still disable it in the Find filter named 

Index. But you cannot do the opposite. 

You must enable the data index in the Search settings to have it listed in the Index filter. 

Search Data within Find 

You can open Find from the Petrel main Edit menu or from the main toolbar. 

Find opens with two vertical panes on either side of the active Petrel window: 

 

 

The Filter pane on the left 

The Results pane on the right 

The filter panes allow you to filter on different attributes of your project data: 

 

 

 

 

Date 

Depth 

Data type 

Spatial location 

Ten default filters are deployed with Studio. 

Refer to section How to use Find filters for more information on how to use the Find filters and custom 

filters. 



How to use Find filters 

 

 

 

 

 

 

 

 

 

 

The items listed in each Find filter represent the items contained in the active data indexes. 

The number associated with each filter data item is the number of those data item names found. 

You can click to show more find filters or to hide filters by right-clicking the blue filter headings. 

The Studio Results panes only list the Techlog data type wells. 

The well logs in each Techlog wells are not listed in the results, but the Find filter selections can 

affect what well logs are clicked for data load. 

The Find filters affect the results listing independently of each other. 

The filter selections do not directly affect the other filter lists contents. 

Clicking a specific data item in a filter only affects the results listed in the Results pane. 

The remaining Find filters then list the indexed data items that are contained in that results listing. 

When a data item listed in a Find filter is checked, the Studio Results pane lists all of the wells 

and other data objects that match the clicked filter. For example, for a given Techlog project, if you 

only enable the Gamma Ray family from the Techlog family filter, then: 

You only enable the dataset named Corrected from the Techlog datasets filter. 

The Find results pane lists all the wells that match those separate criteria, it means that it lists 

all the wells that have a Gamma Ray and a dataset named Corrected. 

Note: 

 

It does not mean that the Gamma Ray well log is contained in the corrected dataset itself. It only 

means that the wells contain each of these items enabled in each filter. 

Therefore, you can: 

Click specific filters. 

Click to load a well from the Results pane and find zero data items clicked. 

When you receive zero data items in the Find Techlog load window, you have two options: 

Cancel the Find Techlog load wizard, and reduce the amount of filters applied for this data 

selection. 

From the Find Techlog load wizard, disable the Silent mode loading, and click Next. This 

opens the Techlog Connector for Studio main window where you can access the full project 

dataset, and refine your data selection. 

Custom Find filters for Techlog data 

Some custom Studio filters were created to better represent the Techlog data: the Techlog families and 

datasets, data status and azimuthal reference. 

 

 

 

 

The Find filters affect the results listing independently of each other 

The selections in one filter do not directly affect the other filter lists contents 

Clicking a specific data item in a filter only affects the results listed in the Results pane 

The remaining Find filters lists the indexed data items that are contained in the results listing 

Loadable vs. non-loadable data 

All project data is indexed and listed in the Techlog project index. However, there is a limited data footprint 

of Techlog data that can be imported into Petrel using the Techlog Connector for Studio. 

Refer to section Loadable data types for more information. 



Results pane in Find 

The Studio Results pane only lists the Techlog data type wells. 

The well logs in each Techlog wells are not listed in the Results, but the Find filter selections can affect 

what well logs are clicked for data load. 

Results display options 

The Studio Results pane has 3 different ways to display the results: 

 

 

 

Table (default) 

Tree 

Tree-grouped by project 

Loadable vs. non-loadable wells 

Initially, all the Techlog wells are loadable from the Studio Results pane. However, when you click the 

Techlog wells, then load and proceed through the Studio load wizard to the Techlog Find window, you 

might see some load warnings (gold font) or load errors (red font) associated with some wells. 

You can hover over each well name to view more details of the load warnings or errors. But if one of the 

wells contains a load error and you still want to load this well and its data, this well is non-loadable using 

the Silent mode loading options. 

If you uncheck the Silent mode, click Next to proceed to the Techlog Connector for Studio window. 

The Well mapping tab displays more information of the load error and some options on how to address or 

even resolve the error. 

Refer to sections Example load warnings on Well mapping tab and Example load errors on Well mapping 

tab and how to resolve them for more information on data load warnings and load errors on the Well 

mapping tab. 

Visualizable vs. non-Visualizable wells 

When you are viewing Techlog project index contents in a Petrel 2D or 3D window, the Techlog wellhead 

and its trajectory might or might not be visualizable. This visualization is dependent on the Techlog well 

having its coordinate reference system and/or its azimuth reference defined in the Techlog Find project 

index. 

In the Results pane of the active Petrel 2D or 3D window: 

 

 

The wells with a checkbox in front of the well name are visualizable 

The wells without a checkbox in front of the well names are not visualizable 

For legacy Techlog projects, you can assign some of these spatial definitions to the wells only for their Find 

project data index. If this spatial data is populated for a well in the Techlog project, these project settings 

are used. 

Although a well is not visualizable in the Petrel 2D or 3D window during this Find workflow, you can still 

load the Techlog well data into existing Petrel wells. The Data index for that Techlog project still contains 

valid well log data that you can load into existing Petrel wells. 

To visualize a wellhead location and its trajectory in the Petrel 2D or 3D window, you must have: 

 

 

The wellhead XYs coordinates (or latitude/longitude coordinates) 

The coordinate reference system (CRS) and azimuthal reference defined for a well 



If you have the wellhead XYs coordinates (or latitude/longitude coordinates), and the coordinate reference 

system, but not the azimuthal reference defined for a well, you can visualize the Techlog wellhead location 

in the Petrel 3D window, but the well trajectory shape is not visualizable. 

If you have the well XYs coordinates, and the azimuthal reference, but not the coordinate reference system 

defined for a well, then you cannot visualize either the Techlog wellhead location or its well trajectory shape 

in the Petrel 3D window. 

If you only have wellhead latitude and longitude coordinates defined for a well in the Techlog project, then 

you require the CRS to convert the latitude and longitude coordinates to XY coordinates. 

Visualizing Techlog wells in Petrel 3D window 

In the Results pane, the wells that are visualizable have a checkbox in front of the well name. 

You can: 

 

 

 

Check the wells that you want to visualize 

Check that either the Spatial Find filter is not set a specific spatial area if you do not see your well 

in the window display 

Click the Petrel option to View all. This refreshes the window to display all data in the project 

Wells without a checkbox in front of the well names are not visualizable in the active Petrel 2D or 3D 

window: 

 

 

You can: 

 

 

This is most likely due to some spatial information missing in the Techlog well or the Techlog 

project index 

A well that is not visualizable does not prevent its data from being loaded 

Map the Techlog well to an existing Petrel well in the Techlog Connector for Studio Well 

mapping tab 

Load the Techlog well data into the existing Petrel well 

Loading data from Find results 

1. Click the Techlog well(s) that you want to load. 

2. Right-click and click Load. 

The first window that opens is a standard window for the Find load wizard. It lists the number of items 

that were clicked for import. 

3. Click Next to continue. 

Load wizard interface for Techlog projects 

The Find load wizard interface for Techlog projects has 3 main sections: 

 

 

 

 

The Silent mode summary in the top and left corner. 

The statistics and active filters listing in the top and right corner. Option is given at that point to the 

user to either combine or not the clicked filters. 

Checking the Combine selected search filters box may further narrow the Load selection by 

combining the filters. For example, by default, the search [Template = “Gamma ray”; Techlog 

dataset = “LQC”] finds all gamma ray logs (in any dataset) as well as all logs (with any template) in 

datasets named “LQC”. Checking the Combine box narrows this search to find only the gamma 

ray logs that are in datasets named “LQC”. 

The data listing in the main lower window. 



This load wizard: 

 

 

Reads the clicked Studio filters and displays the Techlog wells and data that you clicked to load 

Does not respond to any changes made in the Studio Filters 

To revise your data selection 

1. Close the Find load wizard. 

2. Update your Studio Filter selections. 

3. Because the Studio Results listing is updated automatically, click the Techlog wells from the Studio 

Results pane to load again. 

The resulting Find load wizard window for Techlog shows the updated data selection. 

Data load warnings and errors in the Load Wizard 

Data load warnings and load errors allows you to analyze all the well pairings and the well log settings to 

identify any issues before loading the data into Petrel. 

 

 

 

The load warnings are represented by gold font colors 

The load errors are represented by red font colors 

The data items displayed with a bold font style indicate the data item that owns the data load issue 

Note: 

Tooltip messages pop-up for each data item load warning or error when hovering over the mouse. 

Silent mode loading 

1. Enable the Silent mode loading. 

2. Click Next. 

The clicked data load without opening the Techlog Connector for Studio. 

You can use the concept of data load warnings and load errors. It provides logic to suggest a setting or 

mapping. You have some control over the quality of the data transferred. If data is missing or invalid and 

you cannot make a suggestion, these are load errors. 

Refer to section Data load warnings and errors for more information on these load warnings and errors. 

 

 

 

 

When the Silent mode loading is enabled, the Techlog data is loaded into Petrel without opening 

the Techlog Connector for Studio interface 

When the Silent mode loading is disabled, the Techlog Connector for Studio interface opens with 

the same data already preselected 

The Techlog Connector for Studio is the acting data loader for loading Techlog data from Find in 

Petrel, no matter if the Silent mode loading is used or not 

When you load the data, if multiple Techlog projects or other data sources are clicked from the 

Studio Results pane, the Studio load wizard proceeds to address loading data from the next data 

source 

Note: 

The Techlog Connector for Studio works in a single-user mode, which means that you 

cannot access a Techlog project while someone else is using it. Loading data from Find 

results requires access to the Techlog projects that contains it. If another program (for 

example, a Techlog session or another Petrel Techlog Connector for Studio session) already 

has that project opened, you receive a message informing you that it is currently in use and 

that the data cannot be loaded at that time. You can receive this message after clicking the 

Next button both during Silent mode loading and when the Techlog Connector for Studio 

window opens (if Silent mode is disabled). If Find results from multiple Techlog projects were 

clicked for loading, the data contained in Techlog projects that are not in use continue to load 

normally. 



Launching Techlog Connector for Studio window 

The location to open the Techlog Connector for Studio was relocated from Petrel Processes tab. 

1. Click the main Petrel menu File. 

2. Click Techlog Connector for Studio data transfer tool. 

Alternatively, you can launch the Techlog Connector for Studio from the toolbar for the Techlog Connector 

for Studio data transfer tool. This toolbar is by default displayed in the main Petrel toolbar. You can hide 

it by unchecking the Techlog Connector for Studio data transfer tool from the Petrel View menu. 

When you open the Techlog Connector for Studio for the first time: 

 

 

You must initialize the Techlog data API. This can take up to several seconds. 

When you open in a Petrel session, the subsequent opening time shortens significantly. 

Connecting to a Techlog project and partial project loading 

1. After you opened the Techlog Connector for Studio window, connect to your Techlog project by clicking 

the Open folder icon to the right of the Techlog project directory field. 

2. In the pop-up window, browse to locate the Techlog project folder. 

3. Click OK. 

The Techlog project data content is listed in the Techlog Connector for Studio Project browser. 

Note: 

The Techlog Connector for Studio cannot access a Techlog project while someone else is using it. 

If another program (for example, a Techlog session or another Petrel Techlog Connector for 

Studio session) has already the clicked project opened, you receive a message saying that it is 

currently in use and cannot be opened at that time. 

The partial project loading is an optional feature added to this plug-in version. It can save you time in 

loading a few wells from a larger Techlog project into this plug-in Import window Project browser. 

1. Before clicking the Techlog project, go to the Settings tab. 

2. Check the box next to Partial project loading. 

You get an additional load window to click which wells from that Techlog project you want to view in the 

Techlog Connector for Studio Project browser. 

You are connected to the same Techlog project whether you are on the plug-in Import tab or Export tab. 

The partial project load only affects the wells listed in the Import tab of the Project browser. 

Viewing Techlog project data on Import tab 

 

 

If you load the entire Techlog project into the plug-in, you can view its data tree in the Project 

browser 

If you choose to enable the Partial project loading in the Settings tab, and only load some of the 

Techlog project wells, then only these are listed in the Connector Project browser 



Project browser 

 

 

 

 

If you load the entire Techlog project into the plug-in, you can view its data tree in the Project 

browser. The listing displayed is almost identical to the Project browser listing in the Techlog 

application. 

If you choose to enable the Partial project loading in the Settings tab, and only load some of the 

Techlog project wells, then only these wells are listed in the plug-in Project browser. 

Because there is a limited data footprint of the data types that you can load from Techlog into 

Petrel, any data that is not loadable is displayed with a gray font. 

You cannot move this non-loadable data into the Import list, and therefore you cannot import it into 

Petrel. 

Note: 

Loadable and non-loadable Techlog data types are listed in section Loadable data types. 

 

 

If you click the Project browser window, it is enabled and the window border has a thicker black 

border. 

When the Project browser is active, you can click data and view its properties read-only from the 

tables on most tabs. 

When the Project browser is active: 

 

 

 

 

 

The Well mapping tab lists all the Techlog wells listed in the Project browser 

The Log mapping tab displays a read-only list of any data clicked in the Project browser 

The Data view tab displays the values of the data clicked in the Project browser 

The Image view tab displays an image of the file clicked in the Project browser 

The Properties tab displays information about the data item most recently clicked in the Project 

browser 

Import list (Data selected for import) 

 

 

 

The Import list contains all loadable Techlog project data clicked to import into Petrel 

You can click the loadable data listed in the Project browser and move them to this Import list 

The import list is a subset of all loadable data from the project data listed in the Project browser 

When you move data from the Project browser to the Import list, you see that the wells, datasets, and 

variables might have red or gold font colors or bold fonts. This feature of the Techlog Connector for Studio 

is used to evaluate all data for load warnings or load errors before loading the data. 

 

 

Load warnings are represented by gold font colors 

Load errors are represented by red font colors 

When the Import list is enabled: 

 

 

 

 

 

Well mapping tab lists all the Techlog wells listed in the Import list, along with any data load 

warnings or load errors associated with these wells 

Log mapping tab displays all the data clicked from the Import list, along with any data load 

warnings or load errors associated with these well logs 

Data view tab displays the values of data clicked in the Import list 

Image view tab displays an image file clicked in the Import list 

Properties tab displays some information about the data item most recently clicked in the Import 

list 

When the Import list is enabled, you see that the load warnings and load errors font colors are also 

indicated in the Well mapping tab and the Log mapping tab. You must address all warnings and 

errors before you can import any data in the Import list into Petrel. 

Refer to section Data load warnings and errors for more information on data load warnings and load errors. 



Properties tab 

 

 

 

The Properties tab displays different information about the data objects clicked from either the 

Project browser or the Import list 

Slightly different information is displayed for the data types variables, datasets, wells, and groups 

The well list of properties now includes the name of the trajectory dataset that contains the 

trajectory imported for the new Petrel wells 

Data load warnings and errors 

 

 

 

 

You can analyze all well pairings and well log settings to identify any issues before loading the data 

into Petrel 

Load warnings are represented by gold font colors 

Load errors are represented by red font colors 

The data items displayed with a bold font style indicate the data item that owns the data load issue 

Note: 

Tooltip messages appear for each data item load warning or error when hovering the mouse over 

the Import list, the Well mapping tab or the Log mapping tab. 

A data item can have both: 

 

 

In that case: 

 

 

 

A load warning 

A load error 

The red load error font color takes precedence over the gold load warning color. 

The parent data times adopt their children load warnings or load error colorings. It allows you to 

identify the location of data load warnings or load errors even if the Import list is collapsed down 

the well level. 

The datasets fonts adopt the dominant load warning or error color from their well logs, and the well 

fonts adopt the dominant load warning or error color from their datasets (well logs). 

For example, a well might have no load issues, but it might be colored red because at least one well log 

and therefore the dataset in that well has a load error. 

Another example, a well might have a load warning and be colored gold, but it might also have a child with 

a load error. This now makes the well font color red because of the precedence of a red load error over the 

gold load warning coloring. 

You can display the load warning and errors on both the Well mapping tab and the Log mapping tab. 

Load warnings 

You can associate the load warnings both with: 

 

 

Wells 

Well logs 

The load warnings indicate some missing setting or questionable setting, and the settings to use are 

available. But you must confirm all the load warnings before loading data. 

Load errors 

You can associate load errors with: 

 

 

Wells 

Well logs 



Load errors indicate missing spatial data or mismatched well log units. 

 

 

You can resolve some load errors in the plug-in for the current load session only 

You cannot resolve some load errors in the plug-in, and therefore you cannot import that data into 

Petrel 

Refer to section Techlog and Petrel well mapping for Import, and section Managing Log mapping tab for 

more information on examples of load errors and how to address them. 

Techlog and Petrel well mapping for Import 

 

 

When the Project browser is enabled, the Well mapping tab displays a read-only listing of all 

Techlog wells loaded into the Project browser 

When the Import list is active, the Well mapping tab displays only the wells added into the 

Import list 

Techlog well spatial reference data 

You can view the spatial reference data for each Techlog well on the Well mapping tab display: 

 

 

 

Azimuthal reference 

Elevation 

Coordinate reference system 

If you want to create a new Petrel well, you must define all the spatial reference data for the Techlog well 

because the new Petrel well use the Techlog well trajectory data and the spatial settings. 

Any missing Techlog spatial reference data (azimuthal reference, elevation, or coordinate reference 

system) results in a data load error. 

You must address or remove the data load errors before you can confirm the load warning associated with 

creating this new well. 

Importing new wells and trajectories 

The trajectories of the Techlog wells are only imported if the wells are being created in the Petrel project. 

These Techlog wells must have all the appropriate spatial reference data to be imported as new Petrel 

wells. 

Therefore, the logic to locate this spatial reference data was updated. 

 

 

 

 

 

 

 

The trajectory dataset field displays the name of the dataset where it first searches for the 

trajectory information. The default value is Index, representing the Index dataset. 

The plug-in first look in the well Index dataset for the borehole deviation and azimuth variables to 

calculate the trajectory for the new Petrel well. 

If these measurements are not present in the Index dataset, then the plug-in looks in this Index 

dataset for the TVD, X offset, and Y offset variables to use in calculating the trajectory for the new 

Petrel well. 

If these measurements do not exist, it then looks to the Index dataset property Original_Wellpath 

which contains the name of the wellpath dataset used in creating the Index dataset. 

The plug-in then looks into this wellpath dataset for the borehole deviation and azimuth variables to 

use in calculating the trajectory for the new Petrel well. 

It looks for survey elevation data first in the Index dataset property Elevation, then looks to the 

Index dataset property Original_Wellpath dataset property Elevation, then it searches for the 

value of the Elevation in the well parameters table. 

The Index dataset property Original_Wellpath and reference to azimuthal reference are available 

as off Techlog 2012.1. 



Strong, local and name-matched well mappings 

A strong well mapping is created whenever importing a Techlog well creates a new Petrel well that is to say 

when the Techlog well is mapped to in the Well mapping tab at the time it is imported. 

This includes explicit imports from the Techlog Connector for Studio Data transfer tool and imports 

made via Find Load. 

After the import, the Techlog well is strong mapped to the newly created Petrel well and this strong 

mapping cannot be changed in the Well mapping tab (except by an administrator, refer to section 

Administrator management of strong well mapping). 

Note: 

If the Techlog Connector for Studio user account does not have write access to the Techlog subfolder 

of the Studio Data Environment configuration folder, the plug-in cannot create strongmappings. 

In this case, import simply results in a name-match between the source Techlog well 

and the new Petrel well. Refer to the section Deploying for Shared Studio Data Environments in 

the Techlog Connector for Studio Installation Guide for more information. 

Strong well mappings map Techlog well names to Petrel well identities. 

 

 

In a strong mapping, the Techlog well name includes its Techlog project name, that is to say that a 

Well1 in Project1 is a different well than Well1 in Project2 

In contrast, Petrel well identities are independent of both well and project name 

Example of strong mapping: 

MyTechlogProject/A16 = {ACD8503F-339B-467D-9089-7440F95FC481} 

Where: 

 

 

A16 is the name of a well in the Techlog project named MyTechlogProject 

{ACD8503F-339B-467D-9089-7440F95FC481} is the unique identity of a Petrel well 

Note: 

 

 

The Petrel identity is independent of the Petrel project and the well name – neither renaming a 

Petrel well nor moving it to a different project changes its identity. 

Strong well mappings are stored independently of any Petrel or Techlog project. They are stored in 

the Studio Data Environment Configuration folder. (The location of this folder is normally 

determined by an administrator and is not changed or even known by the Petrel end-user.) This 

means that strong mappings take effect across all Petrel projects that are used with the Techlog 

Connector for Studio. 

In contrast, Local well mappings are stored within a particular Petrel project (they are local to the 

project) and you can change them. This is nearly identical to the user changeable well mappings in 

the earlier versions of the Techlog Connector for Studio except that now the Petrel well identity rather 

than its name is used in local mappings (just as described above for strong mappings). This means 

that renaming a Petrel well does not break a local mapping to it. Another difference for this version is 

that a Petrel project can now save local mappings to multiple Techlog projects (refer to section 

Saving local well mappings). 

Note: 

Strong mappings are not changeable and they take precedence over local mappings. 



For example: 

 

 

If a Techlog well named A16 in project Project1 is imported as into Petrel 

Project2, a new Petrel well with a new identity and the name A16 is created and a strong mapping 

from the Techlog well name to this new Petrel identity is established. 

If the same Techlog Project1 is then opened in the Techlog Connector for Studio along with a 

different Petrel Project3 (which does not contain a well with that same Petrel identity) the Techlog 

Connector for Studio Well mapping tab shows that Techlog Well A16 is mapped to and this is not changeable. Importing this well creates a Petrel well in Project3 

that has the same identity as the well A16 in Petrel Project2 (that is to say that the Petrel 

Reference project tool knows that these are the same well). Even if the Petrel Project3 contained 

a local mapping between the Techlog well A16 and some other Petrel well in that project, the 

strong mapping takes precedence and overrides this with . 

Strong mappings are important to support Petrel workflows that are based on Petrel well identity: 

 

 

Petrel Reference project tool 

Database tool and Find 

For example, in Petrel Find, if a Techlog well that is strong mapped to a Petrel well appears as a Find 

Search result and the mapped Petrel well is in the current Petrel project, clicking on the Techlog well in the 

Search results highlights the Petrel well in the Petrel Input tree. Likewise, the Find Project filter works 

correctly for this well pair using the All items, New items, Updated items filter values. 

If there is no strong or local mapping for a Techlog well but if there is a Petrel well in the current project with 

the same name, the Techlog Connector for Studio creates a Name-matched well mapping between them. 

Name-matched mappings constitute a load warning that you must confirm before you can process import. 

Confirming a name-match converts it to a local well mapping, which you can optionally save as described 

below. 

Administrator management of strong well mapping 

Note: 

Note: 

Strong well mappings apply to both the Import and Export Well mapping tabs but an 

administrator can only manage them from the Import tab. 

If the Techlog Connector for Studio user account does not have write access to the Techlog subfolder 

of the Studio Data Environment configuration folder, the plug-in cannot administer strongmappings. 

Refer to the section Deploying for Shared Studio Data Environments in the Techlog 

Connector for Studio Installation Guide for more information. 

You can explicitly manage strong well mappings with administrator privileges. When this privilege is 

enabled, an administrator can use the Import Well mapping tab in the Techlog Connector for Studio 

Data transfer tool to delete existing strong well mappings and create strong mappings between existing 

pairs of Techlog and Petrel wells (via the command). 

Strong well mappings are stored in a Techlog Connector for Studio specific mapping file in the Techlog 

sub-folder of the currently configured Data Environment configuration folder. 

By default, each Petrel installation uses a Data Environment configuration folder on the machine of the 

Petrel installation. However, an administrator can configure all the Petrel installations for an asset team to 

use a shared Data Environment configuration folder. In this case, the Techlog Connector for Studio strong 

mappings are shared across the asset team. 

Refer to the Studio Data Environment Manager documentation for more information about configuring data 

environments. 



Saving local well mappings 

You can create and save local well mapping. 

 

 

 

This does not require administrator privileges 

This is done using the Import Well mapping tab in the Techlog Connector for Studio Data 

transfer tool 

You can map any Techlog well that is not strong mapped to any Petrel well in the current Petrel 

project 

When a mapping is changed, the new Petrel well name value is shown in bold font until it is saved by 

clicking the Save button. This saves the local mapping in the in-memory copy of the current Petrel project 

.pet file. At this point, the change remains even after closing and re-opening the Techlog Connector for 

Studio Data transfer tool. 

To save the mapping in the disk copy of the Petrel project, so that it remains after closing and re-opening 

the Petrel project, you must save the Petrel project itself. Saved local mappings appear in underlined font. 

In the previous versions of the Techlog Connector for Studio, you were allowed to save the local well 

mappings for only one Techlog project in a single Petrel project. This was enhanced in this 2013 plug-in 

version so that you can save the local well mappings for multiple Techlog projects. 

You can also save export well mappings as local mappings in the Petrel project the same way using the 

Export Well mapping tab. 

Well mapping tab context menus 

When you right-click a row in the Well mapping tab, you can: 

 

 

 

Remove XYZ from the Import list. 

It removes this single clicked row from the Well mapping tab and from the Import list data tree. 

Confirm all the warnings: 

Clicking it confirms all confirmable data load warning on this tab. 

If there is a data load error indicated by a red font color on the same row as a load warning, 

then the confirmation checkbox at the end of the row is temporarily disabled. You must 

address this load error before the load warning setting can be enabled and confirmed. 

Uncheck all confirmations. 

It unchecks any checkboxes, that is to say, it any confirmations, any load warnings, and the 

previous load warnings are visible again for each row. 

Example load warnings on Well mapping tab and how to resolve them 

 

 

 

Load warnings are represented in the Well mapping tab with a gold color font 

If there is a load error indicated by a red font in the same row, you must address or remove this red 

load error before the loading warning can be resolved 

Ultimately, you must resolve all load warnings and load errors before any Techlog data can be 

imported 

Refer to section Example load errors on Well mapping tab and how to resolve them for more information on 

load errors on this Well mapping tab are in the next. 



These load warnings in gold font color correlate with the load warnings displayed in the Import list. If there 

are no load errors on the same row for a well: 

 

 

You can confirm the load warnings by checking the confirmation checkbox as the end of the row 

You can confirm the load warnings by right-clicking to open the context menu in the Well mapping 

tab 

Example of load warnings on the Well mapping tab, as indicated by a gold font color: 

 

 

The Petrel well mapping must be confirmed: The Techlog well is mapped to a Petrel well by its well 

name, but this well mapping must be confirmed before loading data. 

If you agree with this suggested Techlog and Petrel well mapping, then confirm the well 

mapping by checking the box at the end of the row or use the Well mapping tab and right-click 

to open the context menu to confirm. 

You can map the Techlog well to the Petrel well that already exists in the project. 

You can create a new Petrel well in the Petrel Input pane, and map this Petrel well to the 

Techlog well. You must define this Petrel well trajectory and its spatial settings in Petrel. 

Creating a new well: Anytime a well is suggested to be created, it is marked as a load warning. The 

Techlog well might map to a specific Petrel well, but the well name string matching does not locate 

the correct Petrel well. 

If you want to create a new Petrel well, you must define all of the spatial reference data for the 

Techlog well because the new Petrel well uses the Techlog well trajectory data and spatial 

settings. Any missing Techlog spatial reference data (azimuthal reference, elevation, or 

coordinate reference system) result in a data load error. You must address or remove the data 

load errors before the load warning associated with creating this new well can be confirmed. 

You can map the Techlog well to the Petrel well that already exists in the project. 

You can create a new Petrel well in the Petrel Input pane, and map this Petrel well to the 

Techlog well. You must define this Petrel well trajectory and its spatial settings in Petrel. 

Example load errors on Well mapping tab and how to resolve them 

 

 

 

 

 

The load errors: 

Are indicated on the Well mapping tab with a red color font 

Correlate with the data items as listed in the Import list 

Represent some missing data 

The most common load error on the Well mapping tab is due to missing spatial reference data 

from the Techlog well when you are choosing to create a new well in Petrel 

If your well mapping settings load the Techlog data into an existing Petrel well, then the missing 

spatial data from the Techlog well is not an issue since the Petrel well is already defined 

You can resolve some load errors on this Log mapping tab, but some cannot, and therefore that 

data cannot be loaded as it is 

If you choose to remove a data item from the Log mapping tab, you can either right-click to open 

the context menu in the Log mapping tab or click and remove the data item from the Import list 

Here is an example of load errors on the Well mapping tab, as indicated by a red font color: 

Creating a new well when the Techlog well is missing any spatial data: This is the most common data load 

error on the Well mapping tab. If you want to create a new well in Petrel, then you need all of the Techlog 

well spatial reference data listed on this Well mapping tab to define the new well trajectory in Petrel. 

Spatial data is defined here as the azimuth reference, the elevation, or the coordinate reference system for 

that well. 



You have three ways to resolve the load error: 

 

 

 

If you want to load data from this Techlog well, you can map this Techlog well to an existing Petrel 

well. When mapping to an existing Petrel well, then the missing spatial reference data from the 

Techlog well is no longer an issue because the Petrel well spatial information is already defined. 

If you want to load the data from this Techlog well, but the Petrel well does not exist yet in the 

Petrel project, you can create the new well in the Petrel Input pane, and map the Techlog well to 

this new Petrel well on this plug-in Well mapping tab. You must load the survey data into this 

Petrel well and define the well spatial information to process this well trajectory. Now that you are 

mapping your Techlog well to this defined Petrel well, the missing spatial data in the Techlog well 

is no longer an issue and therefore no longer a load error. 

If you want to create a new well in Petrel with the Techlog well name, then you must define the 

missing Techlog spatial reference data for this well. You can set these on this plug-in Well 

mapping tab, but any spatial setting added only applies to this well single data transfer, details are 

written to a Petrel history record, but these new settings are not written back to the Techlog project. 

Therefore, you must define this missing spatial reference data in the original Techlog project before 

importing Techlog data into a newly created Petrel well. 

Importing well logs 

You can import several data types from Techlog projects into Petrel. However, the data footprint is limited. 

The charts below describe which Techlog data types are loadable into Petrel. 

Loadable data types 

There is a limited data footprint for the Techlog data types that are loadable into Petrel. These tables below 

define the Techlog variable types, dataset type, and family variable type that are loadable and not loadable 

using the Import tab of the Techlog Connector for Studio for Petrel 2013. 

Techlog variable type 

Continuous 

image 

point data 

borehole image 

blocked curve 

Dip 

square log 


Text 

blocked and centered 

rich text 

casing shoe 

date time 

color variable 

Arrays 

Loadable into Petrel using 

Techlog Connector for Studio 2013 

Yes 

Yes 

Yes 

Yes 

Yes 

Yes 

Yes 

Yes 

No 

No 

No 

No 

No 

No 

No 



unknown array 

histogram array 

cross-plot array 

seismic array 

cumulated array 

matrix array 

multi-dimensional acoustic array 

acoustic array 

fracture variable (array) 

No 

No 

No 

No 

No 

No 

No 

No 

No 

Techlog dataset type 

Continuous 

Point data 

PQC 

Images 


Contact 

Interval 

Checkshots 

time-depth 

Trajectory 

Quanti 

Shift 

multi-well 

variable group properties 

Wavelet 

Annotation 

well schematics 

tool string 

Symbols 

Markers 

Equivalent Petrel Unit Symbol 

Yes 

Yes 

Yes 

Yes 

Yes 

Yes 

No 

No 

No 

No 

No 

No 

No 

No 

No 

No 

No 

No 

No 

No 



Techlog family variable type 

Continuous 

blocked curve 

point data 


matrix array 

Text 

Loadable into Petrel using Techlog 

Connector for Studio 2013 

Yes 

Yes 

Yes 

Yes 

No 

No 

Well logs listed in the Log mapping tab 

The Log mapping tab displays the well logs clicked from either the Project browser or the Import list. 

 

 

 

When the Project browser is enabled, the Log mapping tab is read-only. 

When the Import list is enabled, the Log mapping tab displays any data load warnings in gold 

and load errors red. The load warnings and errors complement the Import list data tree. 

Although you can add and import contacts and borehole image files to the Import list, the clicked 

data types are not listed in the Log mapping tab. 

Refer to section Managing the Log mapping tab for more information on the Log mapping tab. 

Viewing log values in the Data view tab 

The Data view tab displays the values for the well logs clicked in either the Project browser or the Import list. 

You can: 

 

 

 

 

Display well log data values for individual or for all well logs per dataset 

Click data at either the dataset or well log level 

Make multiple well log selections while holding Ctrl key thanks to usability improvements 

Click a group of data listed within a dataset by left-clicking the data while holding Shift key 

Clicking a well or a group does not display its data as the Data view tab is limited to show data per dataset. 

The well log values are displayed in several pages, and you can step through each page using the arrows 

and controls at the bottom of the Data view tab. 

Importing the well log data 

You must resolve or remove all data load warnings and errors from the Import list before you can load any 

Techlog data. 

Data load warnings are indicated by a gold font and the load errors are indicated by a red font. 

The data load warnings and errors displayed in the Import list complete the data load warnings and errors 

displayed on both the Well mapping tab and the Log mapping tab. 

The Import green button in the lower left corner of the plug-in window works after all data load warnings 

and errors are resolved or removed from the Import list. 



Managing the Log mapping tab 

The Import Log mapping tab maps the individual variables in the wells and datasets of the open Techlog 

project to target Petrel Templates and Global well logs (GWL). 

 

 

Mappings are based on individual variables and not on general variable names. 

Each individual GR variable appears as a separate row in the table and a new first column of the 

table shows the well/dataset that contains the variable for each row. This allows load errors and 

warning to be displayed individually for each variable. Likewise, mappings are specified individually 

for each variable. 

Techlog family to Petrel template mapping 

The Techlog family column shows the family that is assigned to the variable in the Techlog project. 

 

 

 

 

This cannot be changed 

This family determines the default mapping of the variable to a Petrel Template that is used to 

create a Petrel well log upon import 

You can change this mapping to any continuous template contained in the current Petrel project 

You can save the template mappings in the Petrel project as local log mappings 

When you change a mapping, the new Petrel template value is displayed in bold font until it is saved by clicking 

Save. 

 

 

It saves the local mapping in the in-memory copy of the current Petrel project.pet file 

The change remains even after closing and re-opening the Techlog Connector for Studio Data 

transfer tool 

To save the mapping in the disk copy of the Petrel project, so that it remains after closing and re-opening 

the Petrel project, it is still necessary to save the Petrel project itself. The saved local mappings appear in 

underlined font. 

Techlog log name to Petrel Global well log mapping 

The Techlog log name column shows the name assigned to the variable in the Techlog project. 

 

 

 

 

 

 

 

You cannot change it. 

The variable name determines the default mapping of the variable to the Petrel Global well log 

(GWL) that is used to create a Petrel well log upon import. 

If a GWL with the same name as the variable exists in the current Petrel project, the variable is 

mapped to that GWL by default. 

You can change this mapping to any GWL in the Petrel project. 

If there is no matching GWL, the default mapping is and a new GWL with the 

variable Techlog name is created upon import. 

If the variable is mapped to an existing GWL (either by name-match or set by you) the Petrel 

template mapping is automatically set to the Template of that GWL and cannot be changeable 

anymore. 

When a GWL mapping is changed, the new value is shown in bold font until it is saved by clicking 

Save. This saves the local mapping in the in-memory copy of the current Petrel project. At this 

point, the change remains even after closing and re-opening the Techlog Connector for Studio 

Data transfer tool. 

Note: 

Unlike Template (and well mappings) changes, changes to GWL mappings are never saved in the 

local log mappings in the on-disk copy of the Petrel project. The saved GWL changes are 

discarded when a new Petrel project is opened or when you exit Petrel. 



Log unit mapping 

The Techlog unit column shows the symbol of the unit assigned to the variable in the Techlog project. You 

cannot change it, unless the unit is missing in the Techlog project. 

The Petrel unit column shows the unit assigned to the currently mapped Petrel template. 

 

 

 

 

 

 

 

 

 

 

 

 

The units shown in the Techlog unit and the Petrel unit columns must be compatible. You can 

create a valid unit conversion between them. If not, a load error is displayed in these columns of 

the table and you cannot change the Techlog unit to resolve this error. 

You can change the Petrel unit by mapping the variable to a different Template or GWL. 

Mapping a variable to the General template changes the Petrel unit to dimensionless. 

Any Techlog variable mapped to the General/dimensionless combination is imported without unit 

conversions. This is a load warning and you must confirm it (and a corresponding history record is 

added to the created Petrel well log in this case). 

If the variable unit information is missing from the Techlog project, you can specify a unit. This 

user-supplied Techlog unit is used to convert the variable to the Petrel unit (and a corresponding 

history record is added to the created Petrel well log in this case). 

When you supplied a missing Techlog unit, the new value is displayed in bold font until it is saved 

by clicking Save. 

As described for the GWL changes above, user-supplied units are only saved with the in-memory 

copy of the Petrel project. 

The units used in Techlog are based on the POSC unit catalog. 

The units used in Petrel are based on the Schlumberger Ocean unit catalog. 

In several cases, there are Techlog unit symbols that are not known in Petrel. 

In a few cases, there are Techlog unit symbols that have a different meaning in Petrel. 

You can use an internal (non-extensible) unit equivalence table to map some important Techlog 

unit symbols to Petrel unit symbols with the same physical interpretation. 

This table is used to help finding a correct unit conversion between Techlog and Petrel units. The content of this 

table used in the current release of the Techlog Connector for Studio appears in Appendix C: Techlog to Petrel 

units equivalence table. 

Log mapping tab context menus 

When you right-click a row in the Log mapping tab, you can choose to: 

 

 

 

Remove the Well/dataset/welllog from the Import list: To remove this single clicked row from the 

Log mapping tab and from the Import list data tree. 

Confirm the Well/dataset/welllog warnings: 

Clicking this option checks the box at the end of this row, confirming the settings for this item 

data load warnings. 

This is not an option when a row has a disabled confirmation checkbox for the load warnings. 

Confirm all warnings: 

Clicking this confirms all confirmable data load warning on this tab. 

If there is a data load error indicated by a red font color on the same row as a load warning, 

the confirmation checkbox at the end of the row is temporarily disabled. You must address this 

load error before you can enable and confirm the load warning setting. 



 

Uncheck all confirmations: to uncheck all the boxes and not confirm any load warnings and the 

previous load warnings are visible again for each row. 

Example load warnings on Log mapping tab and how to resolve them 

 

 

 

 

 

Load warnings are indicated in the Log mapping tab with a gold color font 

Load warnings correlate with the data item as listed in the Import list 

If there is a load error in the same row, you must address this load error before you can confirm 

and resolve the load warning 

If there is more than one load warning per row, choosing to confirm warnings applies to confirming 

all load warnings on that row 

You can confirm load warnings by: 

Checking the confirmation box at the end of the row 

Right-clicking the row to open the context menu in the Log mapping tab 

Example of load warnings on the Log mapping tab, as indicated by a gold font color: 

 

 

 

Family-Template pairing: the Techlog well log family does not locate a Petrel template pair. It 

cannot suggest pairing the Petrel General template with the unit Dimensionless. You either: 

Check the confirmation checkbox at the end of the row if you agree to this suggested settings 

and all other load warnings on this row. 

Click that Petrel template from the pull down listing if you know from an existing Petrel 

continuous template that this well log would better map to. 

Creating a new Global well log: the Techlog well log cannot find a Global well log (GWL) with the 

same name. It cannot suggest creating a new GWL with the name of the Techlog well log. You can 

either: 

Check the confirmation checkbox at the end of the row if you agree to this new GWL being 

created and if you agree to all other load warnings on this row. 

Click to map this Techlog well log to an existing GWL in the Petrel project. 

Create a new continuous GWL in the Petrel Input pane and click this new continuous GWL 

from the plug-in GWL pull down listing. 

Log unit pairing does not use a unit conversion: The Techlog well log unit and the Petrel unit does 

not define unit conversion, and the data is transferred with no unit conversion and is stored in the 

Petrel unit listed. The Petrel unit is determined from the Petrel template selection. Both the Techlog 

and Petrel unit are read-only. A unit conversion is an algorithm that is used to convert two 

recognized units, for example converting feet to meters has a defined value conversion algorithm. 

You can either: 

Check the confirmation checkbox at the end of the row if you agree that you can import this 

Techlog well log into the listed Petrel unit without any additional unit conversion, and if you 

agree with all other load warnings on this row. 



Do not confirm this load warning if you do not agree and if you think that a unit conversion is 

required for the data import. You can click a different Petrel template whose unit might be a 

better complement to the Techlog well log unit. Alternatively, you can remove this data item 

from the Import list, correct the well log unit back in the Techlog project and reattempt to 

import this data. 

Example load errors on Log mapping tab and how to resolve them 

 

 

 

 

 

Load errors are indicated on the Log mapping tab with a red color font 

These load errors correlate with the data item as listed in the Import list 

A load error represents some missing data 

You can resolve some load errors on this Log mapping tab, but you cannot resolve some and 

therefore that data cannot be loaded as it is 

If you choose to remove a data item from the Log mapping tab, you can right-click to open the 

context menu in the Log mapping tab 

Example of load errors on the Log mapping tab, as indicated by a red font color: 

 

Missing Techlog unit: The Techlog well log has no unit defined in the Techlog project. In this case 

the Techlog unit is displayed undefined in red. This load error is resolvable for this data transfer 

session only. You can either: 

Click a unit from the drop-down menu. This new unit is then compared with the Petrel unit to 

determine if this results in a load warning or possibly another load error. 

• This unit is only used for this well log data transfer, it is captured in the Petrel well 

log history, but it is not written back to the Techlog project. You can import this 

Techlog data into Petrel with this workflow. The recommended solution is to define 

the missing unit in the original Techlog project, and reattempt to import this data 

though. 

 

Remove this data item from the Log mapping tab and the Import list, correct the unit in the 

original Techlog project, and reattempt to import this data. 

Unit conversion is not valid: The Techlog well log unit and the Petrel template unit are both recognized 

and there is not a valid unit conversion between them. For example, if the unit meters and gAPI are 

paired, these measurements are completely different and there is no unit conversion for this. You can 

either: 

Check that the Petrel template selection is correct. If this Petrel template is incorrectly chosen, 

the template unit might not represent this data item. 

• If you acknowledge the units are mismatched, but you still want to load this 

Techlog data item into Petrel and you have the option to change the Petrel 

template to General, which then changes the Petrel unit to Dimensionless. This 

changes this data item load error to a load warning that you can confirm and load. 

But, if the Techlog well log unit is incorrectly defined, the recommended solution is 

to correct the invalid unit in the Techlog project and reattempt to import this data. 



Remove this data item from the Log mapping table and therefore the Import list, correct the 

unit in the original Techlog project, then reattempt to import this data. 

Here is an example for DLS units of dega and deg/30m that do not have any defined 

conversion between them: 

 

Duplicate Global well logs (GWL): By default, the GWL mapping in the Log mapping tab is 

driven from the Techlog well log name. If you clicked more than one Techlog well log with the 

same name, even if they are in different datasets of the same well, then these well logs want to 

map to the same GWL, and they are flagged as duplicate loading of the same well log for the same 

well. You can either: 

Remove the duplicate well log that you do not want to load from the Log mapping tab and the 

Import list if you only want to load one of these logs. 

You can assign one well log to an existing GWL, assign the other well log to a different existing 

GWL in the Petrel project if you want to load both of these Techlog well logs into the same 

well. If the existing GWLs do not exist yet, you can create a new continuous GWL in the Petrel 

project and assign it to the Log mapping tab. 

Importing formation dip results 

You can import Techlog formation dip results into Petrel. The true dip inclination (angle) and true dip 

azimuth are the most common well logs from dip results to import into Petrel. 

Required dip dataset type 

The formation dip dataset format requirements changed. 

 

 

 

The importable dip datasets are no longer required to be in a group 

You must place the formation dip results in a point data type of dataset which is their default 

dataset type already 

The Dips group name field was removed from the Settings tab 

Dip results displayed in Log mapping tab 

The names assigned to the default Global well log (GWL) for the dip angle and dip azimuth were updated 

to simply be the name of the Techlog well log. 

Because the Techlog log names for the dip angle and dip azimuth tend to be uniquely named for each dip 

dataset, there is a low chance for the dip angle and dip azimuth well logs across datasets to be marked as 

duplicate. 

However, if you choose to load other well logs from these dip datasets, because of their consistent naming 

convention across the datasets, those well logs are more likely marked as duplicate well logs loading into 

the same well. 

Refer to section Example load errors on Log mapping tab for more information on how to resolve these 

duplicate well logs. 



Viewing dip results values in Data view tab 

 

 

 

 

The Data view tab displays the values for the well logs clicked in either the Project browser or the 

Import list 

The Data view tab can display multiple log curves in the same dataset 

You can click specific well logs in the same dataset left-clicking them and holding the Ctrl key 

If you click data from more than one dataset, only the data from the most recently clicked dataset 

displays in Data view tab 

Importing the dip results 

Before 2012.1 version of the plug-in, only the true dip angle and dip azimuth well logs were imported from dip 

datasets. 

Now, by removing the dependency of the dip datasets on the group, you can import more well logs from the 

dip dataset to Petrel. The dip results are imported into Petrel as continuous GWLs. 

If you click to load other well logs from these dip datasets, because of their consistent naming convention 

across datasets, they are more likely marked as duplicate well logs loading into the same well. 

Refer to section Example load errors on Log mapping tab for more information on how to resolve these 

duplicate well logs. 

You can import the data from the Import list to Petrel after all data load warnings and load errors were 

resolved. 

Displaying dip results in Petrel well section window 

 

 

 

You can display the dip angle and dip azimuth continuous Global well logs (GWL) in Petrel Well 

Section Window (WSW) as tadpoles or in a polar frequency plot 

You cannot simply add these GWLs to a WSW data track by checking on the GWL in the Input 

pane, because this dip data is imported into Petrel as continuous GWLs 

To visualize this dip data in a Well Section Window track, you must modify the active WSW 

display template to add the specific data tracks, either the tadpole track or the polar frequency plot 

track, to view the dip data in these formats 

Refer to Petrel Help section for Well Section window, under its Data track > Point well data section for 

more information on how to display this data types in this Petrel window. 



Importing borehole images 

The Techlog Connector for Studio can import Techlog raster borehole images into Petrel. 

Loadable image data format 

 

 

 

 

 

You can import raster borehole images created in Techlog directly from the image data file 

You cannot import the image array data into Petrel with this plug-in 

You must create a raster image file from the processed image array data 

You can only complete this raster image conversion in the Techlog application before opening this 

Techlog project in the Techlog Connector for Studio plug-in 

If you create this raster image in Techlog while the plug-in is opened in Petrel, you can refresh the 

Techlog project in the plug-in to visualize the updated data in the Project browser in the plug-in 

1. Click the borehole image matrix array variable. 

2. Right-click and click Raster image conversion. 

3. Name the file. 

The resulting borehole image dataset image file variable is now in the correct format that you can import 

into Petrel using the Techlog Connector for Studio. 

Viewing borehole images in Image view tab 

Click the borehole image in either the Project browser or the Import list to view them on the Image view 

tab. 

 

 

 

You can view these borehole image files one at a time in the Image view tab 

If you click the borehole image dataset, the first borehole image variable listed in that dataset is 

displayed in the Image view tab 

The vertical scroll bar on the right side of the Image view tab allows you to scroll up and down to 

view different image intervals 

Any clicked borehole image variables are not listed in the Log mapping tab. But, if they are in the Import 

list, you can import them once all of the data load warnings and load errors in the Import list were resolved. 

Viewing image information in Data view tab 

The imported borehole image file is: 

 

 

Imported into Petrel as bitmap image file 

A concatenation of multiple .png images 

When you click a borehole image file in the Project browser or in the Import list, you can view these .png 

image interval names on the Data view tab. 

Importing the borehole image 

 

 

 

 

 

All borehole image files in the import are loaded into Petrel 

You can load the data after all of the data load warnings and load errors in the Import list were 

resolved 

The borehole images are imported into Petrel as bitmap image files 

The bitmap image files are named the same as the Techlog borehole image variable 

You must uniquely name the imported image file names in Petrel 

Keep this in mind when you are managing the names of the borehole image variables in the Techlog 

project. 



Displaying borehole images in Petrel well section window 

The imported borehole image file is: 

 

 

Imported into Petrel as a bitmap image file 

A concatenation of multiple .png images 

The Petrel bitmap image file Global well log (GWL) is listed under the Global well logs section on the 

Petrel input pane. 

1. Open a Well Section Window. 

2. Toggle on the well. 

3. Toggle on the borehole image GWL from Petrel Input pane. 

The borehole image appears in the Well Section Window in a separate track for the appropriate well. 

4. Scroll along the wellbore, or zoom in or out to display the image interval because the borehole image 

interval might not cover the full well interval defined in Petrel. 

If the borehole track vertical scale is too large, that is to say above 1:650 scale, the colors of the borehole 

image are on a distorted color scale. 

The borehole image details are better viewed in the Well Section Window at lower track vertical scale 

values, that is to say 1:60 or smaller. 

Importing fluid contacts 

You can import some Techlog computed contacts into Petrel using this Techlog Connector for Studio. 

However, you must compute the contacts in Techlog with specific input data from Petrel before being 

exportable back to Petrel. 

Refer to the next section Prerequisites for importing contacts, to confirm if you can import your computed 

Techlog contacts into Petrel using this Techlog Connector for Studio. 

Prerequisites for importing contacts 

You cannot import any Techlog contact directly into Petrel using this plug-in Import tab. 

1. Compute these contacts in Techlog using the Petrel well tops and additional grid model data. 

2. Export the well tops with these additional Petrel model grid data points from Petrel to Techlog first. 

3. Input these new Tops interval dataset into the Techlog Fluid Code analysis (FCA) module to compute 

the fluid contacts. 

The resulting contacting dataset comes from Techlog FCA module that also contains the appropriate 

hydraulic zone information required to successfully import these Techlog Contacts back to the Petrel model 

from the plug-in Import tab. 

Viewing contact data in Data view tab 

You can view the contact data by clicking the contact either in the Project browser or in the Import list, 

then click the Data view tab. 

A Techlog contact dataset can contain more than one contact but you can have more than one contact 

dataset in the Techlog PQC well. 

You can only view the data of one contact dataset at a time in the Data view tab. 



Contacts are not displayed in the Log mapping tab when clicked from either the Project browser or the 

Import list. However, all contacts from the Techlog PQC well that were added to the plug-in Import list are 

considered for import. 

Importing the contact 

The workflow for importing contacts changed for this Techlog Connector for Studio version. You do not 

define the target Petrel project on the plug-in Setting tab anymore. 

Two main things are required before importing contacts using the Techlog Connector for Studio. You must: 

 

 

Compute the Techlog contact from the Techlog FCA module with the Petrel grid model data 

previously imported from Petrel 

Specify a Petrel target model grid 

1. Click it in the Petrel Models tab. 

This Petrel model name font changes to bold. 

If the contact does not correctly import into Petrel, you receive this message in the Petrel message log: 

[Techlog Connector for Studio] Error importing contacts CONTACT : Unable 

to find the contacts' hydraulic zones within the active Petrel grid. 

2. Confirm that the correct Petrel grid is active and that the Techlog contacts were computed with 

zonation datasets from the Petrel well tops that contain the grid zone information. 

Importing contact workflow only applies to contacts in the PQC Techlog well. 

The plug-in only transfers the contact_type names coming from the automatic output of the Techlog Fluid 

Code Analysis (FCA) module, that is to say GOC, OWC. 

 

 

 

 

 

All contacts that qualify to be loaded into Petrel and are added to the Import list are loaded 

You can view the data from these contacts in the Data view tab, but the clicked contacts are not 

listed in the Log mapping tab 

You can only load data into Petrel after you addressed and resolved the data load warnings and load 

errors 

After the contact data was transferred, expand the Petrel grid model located on the Models tab 

Under the Fluid contacts, a new contact set named TL_Contacts was created 

Refer to section Prerequisites for importing contacts for more information on the Techlog contact 

computation workflow. 



Creating the contact in Petrel 

The Petrel process Make Contacts located in the Corner point gridding processes can enable visualization 

of the imported fluid contacts by zone and segment. You can then display or use these newly imported 

contacts as any native Petrel contact set, including volumetric calculations. 

In the example below, an oil-water-contact (OWC) for the zone Ness-2 was defined for several model 

segments. 

Exporting well tops 

 

 

 

You can export well tops for a single well or for a group of wells from your active Petrel project to 

the connected Techlog project 

The Petrel well tops are exported to Techlog as an interval dataset in each respective Techlog well 

No Petrel well trajectory or spatial settings are exported to Techlog for these new wells 

Connecting to a Techlog project 

1. When the Techlog Connector for Studio window is opened, you can connect to your Techlog project by 

clicking the Open folder icon to the right of the Techlog project directory field. 

2. In the pop-up window, browse to locate the Techlog project folder and click OK. 

 

 

 

 

You are connected to the same Techlog project whether you are on the Import tab or the Export 

tab 

If you clicked Partial project loading when connecting to your Techlog project, keep in mind that 

the Partial project loading only affects the wells listed in the Import tab Project browser 

Therefore, you can export all the Techlog wells in the project from the Export tab, even if you did 

not click them in Partial project loading 

When mapping the Petrel wells on the Export tab, you have access to all the Techlog wells in the 

connected project 

Refer to section Connecting to a Techlog project and partial project loading for more information on partial 

project loading. 



Choosing Petrel well(s) 

1. Specify which Petrel well or group of well tops you want to export to the Techlog project. 

2. In the Petrel Input pane, click an individual well or a group of wells. 

3. Click the blue arrow on this Export tab to move them to the Well(s) field. 

You can specify only one well data object, either a single well or a wells folder. If no well tops are 

specified in the following field, then all well tops for the clicked well(s) are exported to Techlog. 

After you filled the Petrel well(s) field, the Data view window at the bottom of this Export tab displays the well 

tops data that are exported to the Techlog project. The following data from the Petrel well tops spreadsheet are 

transferred: 

 

 

 

 

 

 

 

 

MD 

TVDSS 

TVD 

TWT 

TVT 

TST 

Azimuth 

Inclination 

Choosing well top(s) 

This is an optional setting. 

 

 

If no well tops are specified in this field, then all the well tops for the wells clicked in the previous 

step are exported to Techlog 

If you only want a specific well tops set for the well(s) exported to Techlog, then click the Well Tops 

container in the Petrel Input pane, and click the blue arrow on this Export tab to move them into 

this well top set field 

Exporting additional Petrel model grid data points 

 

 

 

This setting is optional, but required if you want to later import contacts from Techlog to Petrel 

This field is only enabled after you specified the wells in the first field 

When you additionally specify a Petrel model pillar grid in this field, then two more data points per 

well top are transferred into the same Techlog dataset 

To move this Petrel model name in this field 

1. Click a model from the Petrel Models tab. 

2. Click the blue arrow on this Export tab. 

 

 

 

 

 

 

 

For the corresponding Petrel model pillar grid specified, the fault block and zone name for each 

well top are also transferred to Techlog in the same well tops Techlog dataset 

If a Petrel model pillar grid is set on this window, each well top also includes the model associated 

FAULTBLK and ZONE_NAME for these well top points 

The well tops for the wells specified are still transferred if a Petrel model pillar grid is not defined 

here 

You cannot import regularly computed contacts in Techlog into Petrel in the Import tab 

To successfully import Techlog contacts back to Petrel using this plug-in, you must export the well 

tops with these additional Petrel model grid data points from Petrel to Techlog first 

Then, the Techlog user must input these new tops interval dataset into Techlog Fluid Code 

analysis (FCA) module to compute the fluid contacts 

The resulting contacting dataset coming from the Techlog FCA module also contains the 

appropriate hydraulic zone information required to successfully import these Techlog Contacts 

back to the Petrel model from the plug-in Import tab 



Defining the Techlog dataset name 

 

 

This field located below the Model pillar grid field indicates the prefix name of the exported Techlog 

dataset. 

The default value is PETREL which means that the well tops would be exported to Techlog 

datasets named PETREL_Tops. You can change this Techlog dataset prefix name before 

transferring data. 

The checkbox labeled Overwrite existing dataset is located to the right of this prefix field: 

 

 

When it is checked, the Techlog dataset with the same prefix and name is overwritten 

When it is not checked, the exported Techlog dataset is named as specified, but also includes a 

numbered suffix 

For example, if this checkbox is unchecked and if the prefix remains as PETREL, then a subsequent 

exporting of well tops to a Techlog well that already has a dataset named PETREL_Tops exports to a new 

dataset named PETREL_Tops [2]. 

Viewing the well tops data 

 

 

 

 

 

 

 

 

 

 

You can view the clicked well tops before loading the data. 

When you populate the top fields, the Data view tab displays the data values of the clicked well 

tops. 

You can expand the plus sign (+) next to each well to list the individual well tops. 

For each well top, the following information is displayed: 

MD 

TVDSS 

TVD 

TWT 

TVT 

TST 

Azimuth 

Inclination 

This data comes from the Petrel well tops spreadsheet. 

If a Petrel model pillar grid is set on the Export tab, then each well top additionally includes the 

Petrel model FAULTBLK and ZONE_NAME associated with these well top points. You can view 

these additional points in the Data view tab. 

Only the markers from the Petrel well tops Stratigraphy section are exported. 

Currently, you cannot export the markers specified in the Petrel well tops Faults or Other sections 

to Techlog at this time. 

Clicking the green arrow icon in the lower left corner below this Data view tab expands all well top 

listings. 

Clicking the red arrow icon collapses all well tops listing. 



Mapping export wells 

Strong well mappings apply to both the Import and the Export Well mapping tab but an administrator can 

only manage them from the Import table. 

In the previous versions of the Techlog Connector for Studio, you were allowed to save local well mappings 

for only one Techlog project in a single Petrel project. This was enhanced in this plug-in version so that you 

can save local well mappings for multiple Techlog projects. 

You can also save Export well mapping as local mappings in the Petrel project, the same way, using the 

Export Well mapping tab. 

Refer to section Saving local well mappings for more information on the saving of these well mappings. 

Exporting the well tops 

 

 

 

 

Click the Export button in the lower left corner of the plug-in window when you are ready to export 

the well tops information 

If the Techlog project is opened in the Techlog application, you must reload the well or perform a 

partial load for the newly exported datasets from the Project browser in the Techlog application 

The Petrel well tops are exported to Techlog as an interval dataset in each respective Techlog well 

If no Techlog well is specified in the Export window Wells mapping tab, then no Petrel well 

trajectory or wellhead location data are exported to these new Techlog wells 

When you are on the Import tab or the Export tab, you are connected to the same Techlog project listed at 

the top of the plug-in window. 

 

 

Even if this Techlog project is partially loaded, you still have access to export well tops data to any 

Techlog well in this project. 

When mapping Petrel wells on the Export tab, you have access to all Techlog wells in the 

connected project. 

The current well tops export limitations: 

 

 

Only markers from the Petrel well tops Stratigraphy section are exported. Currently, you cannot 

export the markers specified in the Petrel well tops Faults or Other sections to Techlog. 

Complex and stacked Petrel well tops might be transferred into Techlog as inverted zones. 



Spatial reference data in Techlog 

Coordinate Reference Systems, azimuthal references, coordinates conversion (wellhead X&Ys to wellhead 

Latitude & Longitude conversion, and vice-versa), and coordinate systems transformation are now handled 

in Techlog (from the 2011.2 version) using python scripts available under Data > Reference and 

coordinates > Well coordinates converter > Well coordinates transformer. 

In Techlog, you can find this information in the well properties window: 

1. From the Project browser, choose a WellName. 

2. Click F4 to open it. 

3. From the Parameters tab, under the Main properties node, you find all the mandatory geographical 

information. The Properties tab also contains information about the Cartographic Reference System 

in use. 

Refer to the associated Techlog documentation available from Techlog > Techlog > Data tab > Techdata 

group > Reference and Coordinates > Coordinate Reference System to know how to assign spatial 

references to Techlog wells. 

Azimuthal reference property (effective Techlog 2012.1) 

An azimuth is an angular measurement in a spherical coordinate system. 

The vector from an observer (origin) to a point of interest is projected perpendicularly onto a 

reference plane; the angle between the projected vector and a reference vector on the reference plane is 

called the azimuth. 

In a horizontal coordinate system, azimuth is one of the two coordinates, the other one is the elevation. 

In Techlog, when computing True Vertical Depth (TVD) you must define the azimuth reference between the 

following properties: 

 

 

 

Undefined 

True North 

Grid North 

Refer to the associated Techlog documentation available from Techlog > Techlog > Data tab > Techdata 

group > Reference and Coordinates > Computing a TVD to know how to assign spatial references to 

Techlog wells. 



Final data status property python script (effective Techlog 2012.1) 

A python script is available from Techlog > Utility tab > Python group > Python explorer > Techlog > 

Techdata > Data manipulation > Set Data status property for variable to set a status property to a 

variable. 

Important: We highly recommend that you apply a filter on a data selection before running the 

python script. A warning window opens if no filters were applied, preventing from adding 

an unwanted property to a full Techlog project. 

You can use this property: 

 

 

At indexing time to restrict the indexing to a certain flagged data property (for example, Final) 

When narrowing the Find search using the dedicated Data Status (Techlog) filter (you must 

enable it manually) 



 

 

 

 

 

Units used in Techlog are based on the POSC unit catalog 

Units used in Petrel are based on the Schlumberger Ocean unit catalog 

In several cases, some Techlog unit symbols are unknown in Petrel 

In a few cases, some Techlog unit symbols have a different meaning in Petrel 

Techlog Connector for Studio uses an internal unit equivalence table to map some important 

Techlog unit symbols to Petrel unit symbols with the same physical interpretation 

This non-extensible table helps you to find a correct unit conversion between Techlog and Petrel units. 

Techlog Unit Symbol 

volpercent % 

wtpercent % 

pu % 

PU % 

ft3Pft3 

m3Pm3 

cm3Pcm3 

sm3Psm3 

proba 

ratio 

RATIO 

v/v 

FRAC 

frac 

FRACTION 

fraction 

unitless 

UNITLESS 

eq 

Euc 

b/elec 

Equivalent Petrel Unit 

Symbol 

ft3/ft3 

m3/m3 

cm3/cm3 

scm3/scm3 

(dimensionless) 



m3/m3

Techlog Connector for Studio 2013 User Guide - Ocean ...

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