Krystian K. Maskos - Houston TX, US Michael R. French - Katy TX, US
Assignee:
Chevron U.S.A. Inc. - San Ramon CA
International Classification:
E21B 34/08
US Classification:
166324, 166364
Abstract:
The present invention is embodied in systems and methods for mitigating temperature-related pressure buildup in the trapped annulus of an oil or gas well, wherein such systems and methods employ production and/or tieback casing having one or more pressure mitigating chambers, and wherein such chambers make use of pistons, valves, and burst disks to mitigate pressure increases within the annulus.
A rotary bearing downhole sub has an outer housing adapted to be connected to an upper drill string and to receive therein an inner mandril adapted to be connected to a lower drill string. Both the outer housing and the inner mandril are provided with radially directed splines which, when brought into meshed engagement, allow transmission of rotary motion between the upper and lower drill strings and through the sub.
2008 to 2000 Handyman ServicesCloset Storage & Concepts Houston, TX Sep 2007 to Oct 2008Kent Moore Cabinets Houston, TX Aug 2004 to May 2007Quality Cabinets Houston, TX May 2002 to Aug 2004Arrow Mirror, Marble & Glass, LLC Houston, TX Jan 1998 to Feb 2002 Operations ManagerBonanza Marble Houston, TX Aug 1990 to Dec 1997
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