Deployment | Borehole |
---|---|
Log Name | DEV, AZIM |
Measured Property | Deviation angles from the true vertical depth trajectory |
Sensor Type | Accelerometer |
Units | |
SI | ° (degree) |
Oil Metric | ° (degree) |
Oil Field | ° (degree) |
Applications
Tool Schematic
Mathematical Model
\cos \theta(l) = \frac{dz}{dl}, \quad \tan \phi(l) = \frac{dy^*}{dx^*} |
where
l = \int \sqrt{dx^2 + dy^2 +dz^2} – along-hole measured depth
\theta – is deviation from true vertical depth
\phi – azimuth in tangent plane.