EXPERIMENTAL STUDY ON MAGNETIC-NOISE-COMPENSATED INCLINOMETER OPERATION IN A SERIES BOTTOMHOLE DRILL STRING ASSEMBLY AT A SMALL VALUE OF THE FACE DRILL MOTOR APPROACHING PARAMETER
The results of an experimental study on the operation of a magnetic-noise-compensated magnetometric inclinometer structurally built-in to a bottomhole drill string assembly at the distance of approximately 500 mm from the bottomhole motor have been given. The root-mean-square error in measuring of eight values of magnetic azimuth (which are specified on the surface nearly in a horizontal plane) has been shown to be equal to ±0,8° or less.