The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 22, 2024

Filed:

Apr. 06, 2023
Applicant:

Schlumberger Technology Corporation, Sugar Land, TX (US);

Inventors:

Makito Katayama, Cheltenham, GB;

Edward Richards, Cheltenham, GB;

Andrew Whitmore, Cheltenham, GB;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 47/024 (2006.01); E21B 7/04 (2006.01); E21B 44/00 (2006.01); G01P 15/18 (2013.01);
U.S. Cl.
CPC ...
E21B 47/024 (2013.01); E21B 7/04 (2013.01); E21B 44/00 (2013.01); G01P 15/18 (2013.01);
Abstract

A method for drilling a subterranean wellbore includes rotating a bottom hole assembly (BHA) in the subterranean wellbore to drill, in which the BHA includes a drill collar, a drill bit, a roll-stabilized housing deployed in the drill collar and configured to rotate with respect to the drill collar, and triaxial accelerometer and triaxial magnetometer sets deployed in the roll-stabilized housing. Triaxial accelerometer and triaxial magnetometer measurements and a drill collar rotation rate measurement are made while the BHA rotates. A wellbore inclination and a gravity tool face of the roll-stabilized housing are computed from the triaxial accelerometer measurements. The computed inclination and gravity toolface, the triaxial magnetometer measurements, and the measured rotation rate of the drill collar are processed to compute an azimuth of the subterranean wellbore in which influences of eddy currents and magnetometer biases are accounted.


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