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. 09, 2021
Filed:
Mar. 30, 2020
Applicant:
China University of Petroleum (East China), Qingdao, CN;
Inventors:
Chao Zhang, Qingdao, CN;
Zhaomin Li, Qingdao, CN;
Xingchang Xue, Qingdao, CN;
Zhaohui Shang, Qingdao, CN;
Haifeng He, Qingdao, CN;
Linghui Xi, Qingdao, CN;
Mingxuan Wu, Qingdao, CN;
Assignee:
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA), Qingdao, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/594 (2006.01); E21B 33/13 (2006.01); C09K 8/584 (2006.01);
U.S. Cl.
CPC ...
C09K 8/594 (2013.01); C09K 8/584 (2013.01); E21B 33/13 (2013.01);
Abstract
A foam solution for profile control and plugging in heavy oil thermal recovery process, a preparation method thereof, and a method for profile control and plugging.