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:
Mar. 07, 2017
Filed:
Aug. 18, 2010
Anthony Loiseau, Sugar Land, TX (US);
Alice Chougnet-sirapian, L'Hay les Roses, FR;
Elena Tomilina, Paris, FR;
Simon Gareth James, Le Plessis-Robinson, FR;
Anthony Loiseau, Sugar Land, TX (US);
Alice Chougnet-Sirapian, L'Hay les Roses, FR;
Elena Tomilina, Paris, FR;
Simon Gareth James, Le Plessis-Robinson, FR;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
Incorporation of carbonaceous materials in a cement slurry increases the linear thermal-expansion coefficient of the set cement. When placed in a subterranean well having at least one casing string, cement sheaths with linear thermal-expansion coefficients similar to that of the casing will be subjected to lower compressive and tensile stresses during downhole-temperature changes. Such cement slurries are particularly advantageous in the context of thermal-recovery wells.