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:
Jan. 02, 2018
Filed:
Sep. 06, 2013
Applicant:
Petrochina Company Limited, Beijing, CN;
Inventors:
Jiang Yang, Beijing, CN;
Yongjun Lu, Beijing, CN;
Baoshan Guan, Beijing, CN;
Weixiang Cui, Beijing, CN;
Xiaohui Qiu, Beijing, CN;
Assignee:
Petrochina Company Limited, Beijing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/68 (2006.01); E21B 43/26 (2006.01); C09K 8/60 (2006.01);
U.S. Cl.
CPC ...
C09K 8/68 (2013.01); C09K 8/602 (2013.01); E21B 43/26 (2013.01); C09K 2208/30 (2013.01);
Abstract
The present invention relates to viscoelastic fracturing fluids comprising one or more zwitterionic surfactants having multiple hydrophobic and hydrophilic groups. The viscoelastic fracturing fluids can be used to stimulate reservoir and increase oil and gas production.