The angle \theta at which a pipeline or well trajectory diverges from true vertical direction z(l):
| (1) | \cos \theta (l) = \frac{dz}{dl} |
where
l | path length along the trajectory |
|
Fig. 1. Deviation angle \theta along the trajectory |
See also
Natural Science / Physics / Measuring / Positioning
[ Trajectory ] [ Trajectory azimuth ]