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:
May. 27, 2025
Filed:
May. 05, 2023
Applicants:
Cnpc Usa Corporation, Houston, TX (US);
Beijing Huamei, Inc., Beijing, CN;
China National Petroleum Corporation, Beijing, CN;
Inventors:
Lulu Song, Houston, TX (US);
Stephanie Yu, Houston, TX (US);
Assignees:
CNPC USA Corporation, Houston, TX (US);
Beijing Huamei, Inc., Beijing, CN;
China National Petroleum Corporation, Beijing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/68 (2006.01); C09K 8/70 (2006.01); C09K 8/80 (2006.01); E21B 43/26 (2006.01); E21B 43/267 (2006.01); E21B 43/27 (2006.01);
U.S. Cl.
CPC ...
C09K 8/685 (2013.01); C09K 8/70 (2013.01); C09K 8/80 (2013.01); E21B 43/26 (2013.01); E21B 43/267 (2013.01); E21B 43/27 (2020.05); C09K 2208/26 (2013.01);
Abstract
A fracturing fluid for fracturing subterranean formations comprising ascorbic acid. The fracturing fluid can use ascorbic acid to delay increases in viscosity until desired. The viscosity increase can then be maintained over a period of time to perform fracturing operations.