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.
Patent No.:
Date of Patent:
Aug. 07, 2007
Filed:
Nov. 29, 2004
Applicants:
Robert A. Estes, Tomball, TX (US);
Roger Cruz, Houston, TX (US);
Brent D. Hope, Spring, TX (US);
Nico Foekema, Eendenveld, NL;
Inventors:
Robert A. Estes, Tomball, TX (US);
Roger Cruz, Houston, TX (US);
Brent D. Hope, Spring, TX (US);
Nico Foekema, Eendenveld, NL;
Assignee:
Baker Hughes Incorporated, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 45/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A nuclear sensor on a bottomhole assembly (BHA) makes measurements of a property of an earth formation during continued rotation of the BHA. Magnetometers that are susceptible to bias error are deployed on the BHA to make measurements of the magnetic toolface angle. A processor separates the sensor measurements into azimuthal sectors while compensating for inherent time delays in the electronics, non-uniform rotation, and bias.