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720151 Subsea Lifting Operations - TFSK.NO

www.ktf.no

REGISTRATION BY: 30th OCTOBER 2007

Subsea

Lifting Operations

27th – 28th November 2007

Clarion Hotel Stavanger, Norway


PROGRAMME

Tuesday 27th November

The Norwegian Society of Lifting Technology (NSLT)

continues its success with its annual meeting forum

for people working with subsea lifting operations. The

aim of the seminar is to improve the understanding of

operational issues and to connect design specialists,

people responsible for selection of concepts and the

installation contractors.

Knowledge ensures a good economy!

The Norwegian Society of Lifting Technology (NSLT)

is often informed that subsea lifting operations have

exceeded the cost budget by several million NOKs due

to lack of knowledge within relevant disciplines. Often

the costs are exceeded because the operation duration

is longer than planned. The seminar will therefore

focus on the various phases of a subsea installation

operation.

The focus of the seminar will be to present and exchange

knowledge about various challenges and

problems in different types of marine operations

involving subsea lifts.

Theory and practical solutions

In addition to the presentation of examples that illustrate

various issues related to marine operations, we

will present and discuss solutions based on theory -

hydrodynamics and lifting dynamics.

Target groups:

• Engineers in companies engaged in design/

operation of subsea structures and marine

contractor companies

• Personnel in subsea engineering companies and

other companies performing design of subsea

structures and other equipment and tools used

in an operation

• Competent persons for offshore cranes and

lifting appliances

• Suppliers of specialised tools and equipment for

subsea lifting operations

• Authorities and others formulating recommendations

or evaluation criteria and undertakes control

functions

• Warranty surveyors

• Operational responsible personnel in oil

companies.

09.00 Registration / Coffee

Chairmen: Mr. Finn Gunnar Nielsen, StaoilHydro and

Mr. Martin Ahlbäck, Technip Norge AS

10.00 The different phases of a subsea lift from

an offshore construction vessel

• Seafastening

• Lifting from deck of the vessel

• Lifting in air

• Through the splash zone

• Further lowering

• Landing phase

Ms. Jill Jørgensen, Aker Marine Contractors AS

10.45 Theory related to subsea lifting operations

• Hydrodynamic forces

• Solid and open structures

•Lift dynamics

• Forces during the various phases of a

subsea lifting operation

Mr. Peter Chr. Sandvik, MARINTEK

11.30 Coffee Break

11.45 Challenges in ultra deep waters

• Precision positioning in current

• Increased dynamic response due to

vertical-resonance

• Examples on installation methods for

large water depths

- Position control by use of thrusters,

piles, anchors or local guide wires

- Soft connection between surface vessel

and lifted structure

- Free-fall pendulum

• Discussion, from a theoretical-view

Mr. Svein Arne Reinholdtsen, MARINTEK

12.30 Lunch

13.30 Experience from offshore construction vessel

deck handling and rigging

• Safe rigging practice

• Deck lay-out preferences

• Control of crane load in air and during deployment

or recovery

• ROV frendly and safe subsea rigging

Mr. Ian Edvwarts, Technip UK

14.15 DNV Marine Operations Rules for

Subsea Lift Operations

• Brief overview of relevant DNV Publications

• DNV Marine Operations rules for subsea

lifting in general

• Presentation of the New Simplifi ed Method for

prediction of hydrodynamic forces

Mr. Tormod Bøe, DNV

Marine Operations


15.15 Coffee Break

15.30 Lessons learnt during suction anchor and template

installations, from a geotechnical viewpoint

• Instrumentation needed

• Landing velocities

• Penetration of skirts

• Retrieval of structures

Mr. Gisle Håland, StatoilHydro

16.15 Lift Point Acceptance Criteria and Operational

Sea-fastening Systems

Mr. Garry Blowers, Noble Denton

17.00 Use of Cranemaster for seabed retrievals

• A Case Study

Mr. Aksel Andreassen og Mr. Ernst B. Johansen,

Ernst-B. Johansen AS

17.45 End of Day 1

19.00 Conference Dinner

Wednesday 28th November

Chairmen: Mr. Ole J Nordahl, StatoilHydro and

Mr. Jan Gramnæs, Aker Marine Contractors AS

08.30 How to estimate hydrodynamic coefficients applicable

for lifting from the sea bed?

• Feasible methods

• Simple assessments

• Advanced numerical methods

Mr. Finn Gunnar Nielsen, StatoilHydro

09.15 Wet tow and installation of subsea templates

• New installation concept using monohull vessel for

wet tow and installation of heavy subsea structures

• Four successful installations performed during

Spring 2007

• Verifi cation of wet tow - engineering and dynamic

analysis

Ms. Tale Kristine Ulstein, Subsea7

11.00 Subsea Module Handling

• Module Handling System

• Control system

• Moonpool effect

• Typical work procedure

Mr. Alvin Møllstre, DeepOcean

11.45 Lunch

12.45 Alvheim Project - Spools transport and

installation using supply vessel

• Logistic challenges - effi ciency operations

• Spool support and seafastening design

• Safe deck handling and deployment

• Simultaneous vessel operations

• Weather limitations

Mr. Julian Claudel, Technip Norge AS

13.30 Snøhvit Project - 28” spool installation

using barge

• Installation scenario evaluation

• Safe deck handling and deployment

• Lifting analysis - crane curve utilisation

• Trial lift

• Weather limitations

Mr. Peter Wærness, Technip Norge AS

14.15 Coffee Break

14.30 Gjøa template installation analysis

• Challenges

• SIMO analysis for lift-off, splash zone crossing,

lowering and deployment on seabed

• Establishment of hydrodynamic coeffi cients

• Tank testing

Mr. Tor-Bjørn Idsøe Næss, ACERGY

15.15 Frigg DP2 Cessation Project –

Challenges with removal and lifting of pile guides

Mr. Kjetil Eckhoff, Aker Marine Contractors AS

16.00 Closing / Adjourn

10.00 Coffee Break (Checking out)

10.30 DNV 2.7-3 Portable Offshore Units

• General overview

• What is new in the next revision

• Application for subsea units

Mr. Per Øystein Alvær, DNV

Marine Operations


Returadresse:

Tekniske Foreningers Servicekontor

Postboks 73, No-1325 Lysaker

GENERAL INFORMATION

Conference no.: 720151

Time: 27th – 28th November 2007

Place: The Clarion Hotel Stavanger, Stavanger,

Norway

Conference Committee:

Mr. Peter Chr. Sandvik, MARINTEK AS

Mr. Tormod Bøe, Det Norske Veritas,

Marine Operasjoner

Mr. Martin Ahlbäck, Technip Norge AS

Mr. Ole J Nordahl, StatoilHydro

Mr. Finn Gunnar Nielsen, StatoilHydro

Mr. Jan Gramnæs, Aker Marine Contractors AS

Mr. Thore Grønvik, Acergy

Mr. Stene Kristiansen,

The Norwegian Society of Lifting Technology

Administration:

Mr. Stene Kristiansen,

The Norwegian Society of Lifting Technology

Registration by: 30th October 2007

Registration fee:

NOK 7 000, - (excl. VAT) for Members of The

Norwegian Society of Lifting Technology (NSLT)

NOK 8 000, - (excl. VAT) for others

Not-accommodated delegates:

A conference package for not-accommodated

delegates, inclusive lunches, coffee etc. NOK 350,

- (excl VAT) per day.

Conference Dinner for not-accommodated

delegates NOK 450,- (excl. VAT)

This will be invoiced from NSLT.

Accommodation:

Full board at Clarion Hotel Stavanger NOK

1 670,- per day and conference package NOK

420,- last day. This is payable directly to the hotel

upon departure.

Payment:

Accommodation is payable directly to the hotel

upon departure, whilst the Registration fee,

Conference packages and Conference Dinner for

not-accomodated delegates will be invoiced by

NSLT

For registration:

Please use the form (fax), or see www.tfsk.no

“KURSOVERSIKT” for electronical registration

form.

Cancellation:

In event of delegates cancelling acknowledged

registration more than 14 days prior to the event

a cancellation charge of 20% of the total registration

fee will be payable. If cancellations are

received less than 3 days prior to the start of the

conference, a full registration fee is forfeited.

Organiser:

The Norwegian Society of Lifting Technology

(NSLT)

720151 Subsea Lifting Operations

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Design og produksjon: Helli Grafisk AS, Oslo - www.helligrafisk.no

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