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Downhole logging sensor measuring the deviation of the tool from the true vertical depth trajectory
Log Name = DEV, AZIM
Measured property = acceleration of the tool motion
- Assess tool orientation in 3D space
- Depth Matching between cased-hole logs and well schematic based on location of tubing/casing collars
- Correct pressure gradient for well deviation to assess fluid density and fluid friction model
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\cos \theta(l) = \frac{dz}{dl} |
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\tan \phi(l) = \frac{dy}{dx} |