DOWNHOLE TOOL FOR SIDETRACKING

摘要

A downhole tool for drilling a sidetracked borehole. The downhole tool includes a body having an axial bore formed at least partially therethrough. At least one magnetometer is within the body. The magnetometer is configured to measure a magnetic field. A processor may be in communication with the at least one magnetometer. The processor may be configured to receive measurements from the at least one magnetometer, determine an orientation of the downhole tool based upon the received measurements, and selectively maintain the orientation of the downhole tool or change the orientation of the downhole tool based upon the determined orientation.