ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,445, issued on July 14, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).
"Low inclination magnetometer bias compensation for dynamic surveying" was invented by Makito Katayama (Clamart, France) and Andrew Whitmore (Stonehouse, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for drilling includes rotating a BHA in a wellbore. Triaxial accelerometer and triaxial magnetometer measurements are made while rotating the BHA using corresponding triaxial accelerometer and triaxial magnetometer sets that are deployed in a roll-stabilized housing. Magnetic dip angles are computed from the accelerometer and magnetometer m...