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:
Aug. 21, 2007
Filed:
Nov. 21, 2005
Darryl A. Bourgoyne, Baton Rouge, LA (US);
Don M. Hannegan, Fort Smith, AR (US);
Thomas F. Bailey, Houston, TX (US);
James W. Chambers, Hackett, AR (US);
Timothy L. Wilson, Houston, TX (US);
Darryl A. Bourgoyne, Baton Rouge, LA (US);
Don M. Hannegan, Fort Smith, AR (US);
Thomas F. Bailey, Houston, TX (US);
James W. Chambers, Hackett, AR (US);
Timothy L. Wilson, Houston, TX (US);
Weatherford/Lamb, Inc., Houston, TX (US);
Abstract
A holding member provides for releasably positioning a rotating control head assembly in a subsea housing. The holding member engages an internal formation in the subsea housing to resist movement of the rotating control head assembly relative to the subsea housing. The rotating control head assembly is sealed with the subsea housing when the holding member engages the internal formation. An extendible portion of the holding member assembly extrudes an elastomer between an upper portion and a lower portion of the internal housing to seal the rotating control head assembly with the subsea housing. Pressure relief mechanisms release excess pressure in the subsea housing and a pressure compensation mechanism pressurize bearings in the bearing assembly at a predetermined pressure.