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. 13, 2026
Filed:
Feb. 12, 2024
Applicant:
Saudi Arabian Oil Company, Dhahran, SA;
Inventors:
Zuhair Al-Yousif, Saihat, SA;
Ming Han, Dhahran, SA;
Tianping Huang, Beijing, CN;
Shaohua Chen, Beijing, CN;
Assignee:
Saudi Arabian Oil Company, Dhahran, SA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/16 (2006.01); C09K 8/584 (2006.01); C09K 8/594 (2006.01);
U.S. Cl.
CPC ...
E21B 43/164 (2013.01); C09K 8/584 (2013.01); C09K 8/594 (2013.01);
Abstract
A mixture of an anionic surfactant and an amine is injected into a high permeability zone of a subterranean formation. Gaseous COis injected through the wellbore into the high permeability zone to increase the viscosity of the injected mixture to prevent gravity override of the injected CO. After increasing the viscosity of the mixture, COis injected through the wellbore into a low permeability zone to recover the hydrocarbons.