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:
Apr. 24, 2018
Filed:
Sep. 04, 2012
Applicants:
Lijun Lin, Sugar Land, TX (US);
Philip F. Sullivan, Bellaire, TX (US);
Gary John Tustin, Cambridgeshire, GB;
Inventors:
Lijun Lin, Sugar Land, TX (US);
Philip F. Sullivan, Bellaire, TX (US);
Gary John Tustin, Cambridgeshire, GB;
Assignee:
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B 7/02 (2006.01); C04B 7/00 (2006.01); C04B 24/26 (2006.01); C04B 28/02 (2006.01); C09K 8/42 (2006.01); C09K 8/467 (2006.01); E21B 33/13 (2006.01); C04B 111/00 (2006.01);
U.S. Cl.
CPC ...
C04B 7/00 (2013.01); C04B 24/2652 (2013.01); C04B 28/02 (2013.01); C09K 8/428 (2013.01); C09K 8/467 (2013.01); C04B 2111/00663 (2013.01); E21B 33/13 (2013.01);
Abstract
Pumpable process-fluid compositions and methods for establishing hydraulic isolation in cemented subterranean wells comprise more than 1 wt % polyacrylamide and a non-metallic crosslinker. Upon entering voids and cracks in or adjacent to a cement sheath, and contacting the set-cement surfaces, the compositions react and form a seal that prevents further leakage.