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:
Oct. 28, 2025
Filed:
Nov. 30, 2023
Applicant:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Inventors:
Kristina Daeffler, Sugar Land, TX (US);
Linus Sebelin, Houston, TX (US);
Balakrishnan Panamarathupalayam, Houston, TX (US);
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/24 (2006.01); E21B 21/00 (2006.01);
U.S. Cl.
CPC ...
C09K 8/24 (2013.01); E21B 21/003 (2013.01);
Abstract
A drilling fluid for drilling a subterranean wellbore includes water, salt, and a viscosifier comprising a first component comprising a reaction product of at least one acrylamide monomer and at least one sulfonated anionic monomer, and a second component comprising styrene-butadiene polymer. Related methods of operating a wellbore and drilling fluids are claimed.