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:
Oct. 23, 2007
Filed:
Sep. 22, 2004
Applicants:
Gregory D. Williams, Houston, TX (US);
Christopher L. Ognoskie, Katy, TX (US);
John A. Beleski, Houston, TX (US);
Inventors:
Gregory D. Williams, Houston, TX (US);
Christopher L. Ognoskie, Katy, TX (US);
John A. Beleski, Houston, TX (US);
Assignee:
Dril-Quip, Inc., Houston, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 23/00 (2006.01); E21B 17/21 (2006.01); E21B 7/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention is directed to an assembly for installing and selectively retrieving a wear bushing in the bore of a subsea or surface wellhead. The assembly includes a bit sub, which is adapted for attachment to a drill string, a drill string adapter removably coupled to the bit sub, and a wear bushing removably coupled to the drill string adapter and adapted to be recoupled to the drill string adapter for selective retrieval from the bore of the wellhead.