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:
Feb. 04, 2025
Filed:
Jan. 27, 2023
Chevron U.s.a. Inc., San Ramon, CA (US);
Sujeewa S. Palayangoda, San Ramon, CA (US);
Kerry Kennedy Spilker, San Ramon, CA (US);
Sumitra Subrahmanyan, San Ramon, CA (US);
Gayani W. Pinnawala, San Ramon, CA (US);
Sophany Thach, San Ramon, CA (US);
Gregory A. Winslow, San Ramon, CA (US);
Dennis Arun Alexis, San Ramon, CA (US);
Harold Charles Linnemeyer, San Ramon, CA (US);
Timothy P. Theriot, San Ramon, CA (US);
Les Leszek Jackowski, San Ramon, CA (US);
Francesca Cibotti, San Ramon, CA (US);
CHEVRON U.S.A. INC., San Ramon, CA (US);
Abstract
Described herein are methods of treating fluid including hydrocarbons, water, and polymer being produced from a hydrocarbon-bearing formation. The methods include adding a concentration of a viscosity reducer to the fluid to degrade the polymer present in the fluid and adding a concentration of a neutralizer to the fluid to neutralize the viscosity reducer in the fluid. The viscosity reducer is buffered at a pH of 7 or less. The addition of the concentration of the viscosity reducer is in a sufficient quantity to allow for complete chemical degradation of the polymer prior to the addition of the concentration of the neutralizer in the fluid such that excess viscosity reducer is present in the fluid.