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:
Mar. 03, 2026
Filed:
Aug. 12, 2024
Applicant:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Inventors:
Dimitri Khramov, Katy, TX (US);
Evgeny Barmatov, Cambridge, GB;
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/36 (2006.01); C07C 309/15 (2006.01); C07D 233/26 (2006.01); E21B 21/00 (2006.01);
U.S. Cl.
CPC ...
C09K 8/36 (2013.01); C07C 309/15 (2013.01); C07D 233/26 (2013.01); E21B 21/00 (2013.01);
Abstract
A wellbore fluid includes an oleaginous base fluid, and an emulsifier including a reaction product of an amide and a sultone. The amide may include a bis-amide, an imidazoline-amide, or a mixture including the bis-amide and the imidazoline-amide. The bis-amide may include a reaction product of one or more fatty acids and one or more sultones. The imidazoline-amide may include a condensation product of the bis-amide. Related methods of forming the emulsifier and using the emulsifier in a wellbore fluid while drilling an earth formation are also disclosed.