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:
Oct. 18, 2005
Filed:
Dec. 21, 2001
Jack Maberry, Katy, TX (US);
Greg Garrison, Katy, TX (US);
Stephan Harris, Mandeville, LA (US);
Andre Garnier, Katy, TX (US);
Jack Maberry, Katy, TX (US);
Greg Garrison, Katy, TX (US);
Stephan Harris, Mandeville, LA (US);
Andre Garnier, Katy, TX (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
The present invention provides improved well cementing methods for use in cold environment, where the circulating temperature of the cement is typically within the range of 5 to 20° C. The improved well cementing methods include forming compositions that are essentially comprised of an aqueous fluid, a hydraulic cement binder and a set-accelerating admixture comprising an alkali or alkaline earth metal nitrate and an alkali or alkaline earth metal nitrite.