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:
Sep. 23, 2025
Filed:
May. 28, 2025
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Mahmoud Atef Abdulhamid, Dhahran, SA;
Sivabalan Sakthivel, Dhahran, SA;
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Abstract
A method of recovering oil from a subterranean geological formation includes injecting a solution including salt water and a chitosan acetate salt polymer into the subterranean geological formation and concurrently recovering oil from a production well in the subterranean geological formation, where the chitosan acetate salt polymer has a structure according to the formula and where the chitosan acetate salt polymer alters the wettability of the subterranean geological formation. Further, the concentration of chitosan acetate salt polymer in the solution is in a range from 1 to 1,000 ppm and the contact angle of the solution on a formation surface is reduced by greater than or equal to 25% compared to a solution including salt water.