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. 16, 2002
Filed:
Sep. 25, 2000
Applicant:
Inventors:
Edward Harrigan, Richmond, TX (US);
Gary W. Contreras, Valencia, CA (US);
Bunker M. Hill, Sugar Land, TX (US);
Robert W. Sundquist, The Woodlands, TX (US);
Dean W. Lauppe, Pasadena, TX (US);
Sony Tran, Missouri City, TX (US);
Assignee:
Schlumberger Technology Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 7/08 ;
U.S. Cl.
CPC ...
E21B 7/08 ;
Abstract
The present invention provides an improved coring motor for use in obtaining a core sample from the side wall of a drilled bore hole. The present invention provides controllable rotation, extension and retraction of the coring bit relative to the side wall without complicated positioning linkages and with conservation of space for use in slim tools for use downhole.