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:
Feb. 12, 2013
Filed:
Jan. 27, 2012
Steven G. Blair, Tomball, TX (US);
Brent J. Fendley, Cypress, TX (US);
Adam Richard Williams, Conroe, TX (US);
John G. Evans, The Woodlands, TX (US);
Steven G. Blair, Tomball, TX (US);
Brent J. Fendley, Cypress, TX (US);
Adam Richard Williams, Conroe, TX (US);
John G. Evans, The Woodlands, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
An apparatus and methods for manipulating and driving casing. The apparatus includes mechanically responsive elements for gripping an interior of a casing joint, and hydraulically responsive elements for gripping an interior of the casing joint responsive to pressure of drilling fluid flowing through the apparatus. One method comprises manipulating a casing joint by mechanically gripping an interior thereof, hydraulically gripping the interior of the casing joint responsive to drilling fluid pressure, and rotating the casing joint. Another method comprises driving casing by applying weight and torque thereto through engagement with an interior thereof.