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:
Mar. 30, 2004
Filed:
Apr. 23, 2002
Applicant:
Inventors:
Robert A. Estes, Tomball, TX (US);
Jon B. Kahn, Spring, TX (US);
Assignee:
Baker Hughes Incorporated, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 4/700 ;
U.S. Cl.
CPC ...
E21B 4/700 ;
Abstract
This invention provides a motor drive assembly for rotatably positioning and locking a drive shaft suitable for use with a measurement-while-drilling (MWD) downhole assembly for use in drilling boreholes which utilizes gyroscopes, magnetometers and accelerometers for determining the borehole inclination and azimuth during the drilling of the borehole. The motor drive assembly can rotate the gyroscope and other sensors on the tool to one of a plurality of preselected positions and optionally lock the sensors.