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. 21, 2017
Filed:
Aug. 27, 2012
Applicant:
Simon Gareth James, Le Plessis-Robinson, FR;
Inventor:
Simon Gareth James, Le Plessis-Robinson, FR;
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/14 (2006.01); E21B 17/00 (2006.01); E21B 17/10 (2006.01); C04B 28/02 (2006.01); C09K 8/467 (2006.01); C22C 33/02 (2006.01);
U.S. Cl.
CPC ...
E21B 33/14 (2013.01); C04B 28/02 (2013.01); C09K 8/467 (2013.01); E21B 17/00 (2013.01); E21B 17/1085 (2013.01); C22C 33/0285 (2013.01);
Abstract
Methods for cementing a subterranean well comprise installing a casing string into a borehole, wherein the casing string comprises a metal having a coefficient of thermal expansion (CTE) lower than about 6×10/° C. A cement sheath is then placed between the exterior surface of the casing string and the formation wall. The low-CTE metal may reduce casing shrinkage when the well temperature falls during stimulation treatments, cyclic steam injection or when the well temperature reaches equilibrium at the top of a long casing string.