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:
Aug. 19, 2025
Filed:
May. 15, 2020
Applicant:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Inventors:
Balakrishnan Panamarathupalayam, Houston, TX (US);
Richard Toomes, Houston, TX (US);
Daniel Alvarez, Houston, TX (US);
Assignee:
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/52 (2006.01); C09K 8/508 (2006.01); C09K 8/524 (2006.01);
U.S. Cl.
CPC ...
C09K 8/524 (2013.01); C09K 8/508 (2013.01); C09K 2208/26 (2013.01);
Abstract
A method of breaking a filtercake in a wellbore may include circulating a breaker fluid into the wellbore having a filtercake on the walls thereon, the filter cake including copolymer formed from at least one acrylamide monomer and at least one sulfonated anionic monomer, the breaker fluid comprising: a base fluid; a mixture of hydrolysable esters of dicarboxylic acids; and an organic peroxide oxidant.