公开(公告)号：US20250043170A1

公开(公告)日：2025-02-06

申请号：US18364604

申请日：2023-08-03

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Shams KALAM ,  Sidqi Ahmad Mohammad ABU-KHAMSIN ,  Shirish Liladhar PATIL ,  Muhammad Shahzad KAMAL

IPC: C09K8/584

Abstract: A method of enhanced oil recovery in a carbonate rock formation including injecting a mixture into the carbonate rock formation containing an oil composition and extracting the oil composition from the carbonate rock formation. The mixture includes 90-99.99 vol % of an aqueous solution and 0.01-10 vol % of a gemini cationic surfactant based on a total volume of the mixture and 1-2000 parts per million (ppm) of methylene blue, based on a total weight of the mixture. During the injecting at least a portion of the gemini cationic surfactant is adsorbed onto the carbonate rock formation, and at least 50% less by volume of the gemini cationic surfactant adsorbs onto the carbonate rock formation compared to a method under the same conditions but without the methylene blue.