Accelerometer correction

Tools usually do not move up the well bore with a fixed velocity.  Excess movements due to friction, sticking, rig-heave and cable movement all influence a tool’s actual speed within a well.  As most dipmeter and borehole data are acquired in time rather than by depth we need to know this tool movement to place the data at a correct depth point.  Using cable speed and doubly integrated acceleration data, all in conjunction with suitable filters, it is possible to determine a tools velocity and its position at any given time.  This allows the derivation of a shift required to place the data at their correct positions.


See also accelerometer, speed button and stick and pull.



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