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:
Sep. 21, 2010
Filed:
May. 30, 2006
Applicant:
Anthony L. Collins, Houston, TX (US);
Inventor:
Anthony L. Collins, Houston, TX (US);
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 47/00 (2006.01); E21B 47/024 (2006.01);
U.S. Cl.
CPC ...
Abstract
An apparatus and method to control the rotation of a downhole drill bit are disclosed. A pair of spaced-apart measuring or survey instruments at the drill string provide data that is analyzed to determine relative rotation between the instruments so that drag affecting the drill bit may be reduced.