WellCAD Basics - Advanced Logic Technology

1.3.1.12 Full Wave Sonic Log
Description:
BOOK 1 - WELLCAD BASICS - 23
FWS Log (Full Waveform Sonic) data is a two dimensional array of floating point
values. One dimension consists of depth, sampled at a constant rate, the second
dimension usually consists of time in �s, sampled at a constant rate, too. Thus, for
each depth increment the log holds a data trace sampled in time. The FWS log is
most commonly used to store and display full waveform sonic data but can also
used to display borehole radar data, slowness or T2 distribution curves. The
horizontal dimension can be “misused” and must not necessarily correspond to time
in �s all the time.
Data Format:
Depth, Data1, Data2, Data3, … ,DataN
E.g.
Display Styles:
FWS Log data presented as Wiggle, b/w VDL and color VDL.