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:
Nov. 12, 2019
Filed:
May. 22, 2014
Applicant:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Inventors:
Helene Bulte-Loyer, Sceaux, FR;
Loic Regnault de la Mothe, Le Chesnay, FR;
Assignee:
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/13 (2006.01); C09K 8/467 (2006.01); C04B 26/02 (2006.01); C04B 28/00 (2006.01); C04B 28/02 (2006.01); C04B 28/04 (2006.01); C04B 28/06 (2006.01); C04B 28/08 (2006.01); C04B 28/18 (2006.01); C04B 28/32 (2006.01); C04B 28/34 (2006.01); C04B 16/04 (2006.01); E21B 33/14 (2006.01); C04B 103/00 (2006.01);
U.S. Cl.
CPC ...
C09K 8/467 (2013.01); C04B 16/04 (2013.01); C04B 26/02 (2013.01); C04B 28/006 (2013.01); C04B 28/02 (2013.01); C04B 28/021 (2013.01); C04B 28/04 (2013.01); C04B 28/06 (2013.01); C04B 28/08 (2013.01); C04B 28/18 (2013.01); C04B 28/32 (2013.01); C04B 28/34 (2013.01); E21B 33/14 (2013.01); C04B 2103/0028 (2013.01); C04B 2103/0035 (2013.01); C09K 2208/20 (2013.01); Y02P 40/165 (2015.11); Y02W 30/94 (2015.05);
Abstract
A cement for use in wells in which hydrogen sulfide is present, comprises polymer particles. In the event of cement-matrix failure, or bonding failure between the cement/casing interface or the cement/borehole-wall interface, the polymer particles swell when contacted by hydrogen sulfide. The swelling seals voids in the cement matrix, or along the bonding interfaces, thereby restoring zonal isolation.