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. 01, 2011
Filed:
Dec. 27, 2007
Applicants:
Stephane Boulard, Choisy le roi, FR;
Jesse Lee, Paris, FR;
Inventors:
Stephane Boulard, Choisy le roi, FR;
Jesse Lee, Paris, FR;
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C04B 24/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention provides a cementitious composition for oilfield application comprising an organic retarder having at least one carboxylate group and copper ions such that a complex is made between copper ion and carboxylate group. Also a method to retard cementitious composition for oilfield application is disclosed, the method comprising the unique double step of adding an organic retarder having at least one carboxylate group and adding copper ions such that a complex is made between copper ion and carboxylate group.