Page tree

Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

The measurement of a straight line perpendicularly downwards from a reference point at surface.


TVDTVDSS + Logging_Reference_Elevation


where Logging_Point_ElevationReference_Elevation is elevation measured along a straight line from sea level and usually selected as:


  • Rig Floor (as Open Hole Logging Reference)
     
  • Tubing Head Flange (as Production Logging Reference)