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:
Dec. 05, 2017
Filed:
Sep. 26, 2012
Applicant:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Inventors:
Lijun Lin, Sugar Land, TX (US);
Quanxin Guo, Sugar Land, TX (US);
Brent Busby, Richmond, TX (US);
Philip F. Sullivan, Bellaire, TX (US);
Assignee:
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 33/13 (2006.01); C09K 8/36 (2006.01); C09K 8/508 (2006.01); C09K 8/512 (2006.01); E21B 21/00 (2006.01); C09K 8/12 (2006.01);
U.S. Cl.
CPC ...
C09K 8/36 (2013.01); C09K 8/12 (2013.01); C09K 8/5083 (2013.01); C09K 8/512 (2013.01); E21B 21/003 (2013.01); C09K 2208/08 (2013.01); C09K 2208/30 (2013.01);
Abstract
Pumpable process-fluid compositions comprise polyacrylamide, a non-metallic crosslinker and a pH-adjustment material. Such compositions have utility in the context of controlling lost circulation in subterranean wells. Upon entering at least one lost circulation zone, the compositions crosslink, thereby forming a barrier that minimizes or stops fluid flow from the wellbore into the lost circulation zone.