Bakri Zubir

Senior Drilling Engineer | Well Engineering Expert | Digital Innovation & Project Management Leader

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Spindletop™ MD-TVD Depth Converter

Minimum Radius of Curvature method  ·  Paste your well survey, then look up any depth by MD, TVD, or TVDss

How to use:

  1. Paste your well survey in the input table below (MD, Incl, Azimuth) from any Excel or ASCII file
  2. Press the “Load Survey” button
  3. You can then look up any depth by MD, TVD, or TVDss in the table below
  4. This calculator works both for Meters and Feet
  5. Best experienced on a PC or Mac — optimized for the desktop screens typical of engineering workstations
No survey loaded
Survey Input — MD   Incl   Azimuth  (paste from Excel)
Three tab-separated columns: MD  ·  Inclination  ·  Azimuth — blank Incl/Az treated as 0
Depth Lookup — type in one column only per row
# MD (AHBDF) TVD (TVBDF) TVDss Incl (°) Azimuth (°)
Load a survey first, then type any depth to look up