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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.:

US 12435262 B1

PDFFull Text
Date of Patent:
Oct. 07, 2025

Filed:

Sep. 11, 2023

Injection fluids comprising an anionic surfactant for treating unconventional formations

Applicant:

Chevron U.s.a. Inc., San Ramon, CA (US);

Inventors:

Dustin L Walker, Dallas, TX (US);

Gayani W. Pinnawala, Houston, TX (US);

Nabijan Nizamidin, Emeryville, CA (US);

Varadarajan Dwarakanath, Houston, TX (US);

Guo-Qing Tang, Mountain View, CA (US);

Dustin J. Lowry, Pinole, CA (US);

Tetsuo Art Inouye, Sebastopol, CA (US);

Taimur Malik, Houston, TX (US);

Assignee:

CHEVRON U.S.A. INC., San Ramon, CA (US);

Attorney:

Meunier Carlin & Curfman LLC

Primary Examiner:

Zakiya W Bates

Int. Cl.
CPC ...
C09K 8/60 (2006.01); C09K 8/68 (2006.01); C09K 8/74 (2006.01); C09K 8/80 (2006.01); C09K 8/86 (2006.01); E21B 43/267 (2006.01); E21B 43/27 (2006.01); E21B 47/11 (2012.01);
U.S. Cl.
CPC ...
C09K 8/604 (2013.01); C09K 8/602 (2013.01); C09K 8/68 (2013.01); C09K 8/74 (2013.01); C09K 8/80 (2013.01); C09K 8/86 (2013.01); E21B 43/267 (2013.01); E21B 43/27 (2020.05); E21B 47/11 (2020.05); C09K 2208/10 (2013.01); C09K 2208/12 (2013.01); C09K 2208/26 (2013.01); C09K 2208/28 (2013.01); C09K 2208/32 (2013.01);
Abstract

Described herein are compositions and methods that stabilize an injection fluid when exposed to reservoir conditions, reducing formation damage and increasing the amount of hydrocarbon recovered. Specifically, the formulation is a single-phase liquid surfactant package which comprises an anionic surfactant and optionally one or more secondary surfactants.

Find Patent Forward Citations

Walker, Dustin. (2025). Injection fluids comprising an anionic surfactant for treating unconventional formations (U.S. Patent No. 12435262). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12435262

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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