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:
Oct. 08, 2013
Filed:
Aug. 01, 2011
Applicants:
Ali Abdullah Al-yousef, Dhahran, SA;
Ming Han, Dhahran, SA;
Salah Hamad Al-saleh, Dhahran, SA;
Inventors:
Assignee:
Saudi Arabian Oil Company, , SA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/16 (2006.01); E21B 43/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for increasing oil production in a carbonate reservoir by incorporating a diluted surfactant injection in conjunction with conducting a step-wise reduction of salinity of the injected salt water that is injected into the carbonate reservoir. The method provides for increased oil production as compared to conventional waterflooding techniques.