WellCAD Basics - Advanced Logic Technology

BOOK 1 - WELLCAD BASICS - 25
1.3.1.14 Image Log / Image Log Float 2 / Image Log Float 4
Description :
In general the Image Log handles an array of data where one dimension consists of
equally sampled depth and the second dimension of radial equally sampled data
values (one data point every x degree of an arc). The Image Log stores and displays
acoustic scanner data (e.g. amplitude, travel time, thickness) as well as multi finger
caliper or FMI data. Three different types of Image Logs exists each of them storing
the data using a different data type.
The Image Log Integer stores all values as unsigned integer (two bytes), which
means that all values are between 0 and 65535. This is sufficient for acoustic scanner
travel time and amplitude measurements or other data where no negative or decimal
numbers occur. Image Log Float 2 (two bytes) and Image Log Float 4 (four bytes)
types store data as floating point values, which allows proper handling of negative
and decimal numbers.
Data Format:
Depth, Amp1, Amp2, Amp3, … , AmpN
E.g.
Display Styles:
The Image Log supports three different display styles. Data displayed in Color
Image style is presented as false color image where each data value is mapped to a
color value according to a user customizable color palette. The Shifted Curve style
divides the log track into equal intervals and draws all data columns as individual
curves using the left border of each interval as zero baseline. All data columns are
drawn as superimposed curves if the Stacked Curve style has been set.