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:
Apr. 12, 2005
Filed:
Aug. 06, 2002
Applicants:
John D. Barr, Cheltenham, GB;
Geoff Downton, Minchinhampton, GB;
Inventors:
John D. Barr, Cheltenham, GB;
Geoff Downton, Minchinhampton, GB;
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B007/08 ;
U.S. Cl.
CPC ...
Abstract
The present invention provides methods of measuring downhole the curvature of a borehole and, in a particular application of the invention, using the curvature information as an input component of a bias signal for controlling operation of a downhole bias unit in a directional drilling assembly.
Barr, John. (2005). Measurement of curvature of a subsurface borehole, and use of such measurement in directional drilling (U.S. Patent No. 6877241). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6877241
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile