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:
Jan. 29, 2013
Filed:
Nov. 20, 2009
Applicants:
Robert Williams, Houston, TX (US);
Emmanuel Therond, Paris, FR;
Laurent Delabroy, Houston, TX (US);
Inventors:
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/13 (2006.01); E21B 33/14 (2006.01); C09K 8/88 (2006.01); C09K 8/94 (2006.01);
U.S. Cl.
CPC ...
Abstract
Compositions and methods that mitigate pressure buildup in the annular space between two tubular bodies in subterranean wells. The composition of the invention comprises an aqueous solution of crosslinkable acrylamide-base polymer, a crosslinker and a gas. Once foamed and placed in the annular space, the composition provides a resilient, flexible, compressible and durable body that is able to compensate for pressure increases in the annular space, thereby protecting the integrity of the tubular bodies.