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公开(公告)号：US12180421B1
公开(公告)日：2024-12-31
申请号：US18782094
申请日：2024-07-24
Inventor： Shams Kalam , Sidqi Ahmad Mohammad Abu-Khamsin , Shirish Liladhar Patil , Muhammad Shahzad Kamal
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 contains 89-98.9 vol % of an aqueous solution, 0.01-1 vol % of a gemini cationic surfactant, and 0.1-10 vol % of formic acid based on a total volume of the mixture. During the injecting at least a portion of the gemini cationic surfactant is adsorbed onto the carbonate rock formation, and wherein at least 90% 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 formic acid.
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公开(公告)号：US12116530B1
公开(公告)日：2024-10-15
申请号：US18364580
申请日：2023-08-03
Inventor： Shams Kalam , Sidqi Ahmad Mohammad Abu-Khamsin , Shirish Liladhar Patil , Muhammad Shahzad Kamal
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 contains 89-98.9 vol % of an aqueous solution, 0.01-1 vol % of a gemini cationic surfactant, and 0.1-10 vol % of formic acid based on a total volume of the mixture. During the injecting at least a portion of the gemini cationic surfactant is adsorbed onto the carbonate rock formation, and wherein at least 90% 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 formic acid.
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公开(公告)号：US12146103B1
公开(公告)日：2024-11-19
申请号：US18782103
申请日：2024-07-24
Inventor： Shams Kalam , Sidqi Ahmad Mohammad Abu-Khamsin , Shirish Liladhar Patil , Muhammad Shahzad Kamal
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 contains 89-98.9 vol % of an aqueous solution, 0.01-1 vol % of a gemini cationic surfactant, and 0.1-10 vol % of formic acid based on a total volume of the mixture. During the injecting at least a portion of the gemini cationic surfactant is adsorbed onto the carbonate rock formation, and wherein at least 90% 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 formic acid.
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公开(公告)号：US12146102B1
公开(公告)日：2024-11-19
申请号：US18782087
申请日：2024-07-24
Inventor： Shams Kalam , Sidqi Ahmad Mohammad Abu-Khamsin , Shirish Liladhar Patil , Muhammad Shahzad Kamal
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 contains 89-98.9 vol % of an aqueous solution, 0.01-1 vol % of a gemini cationic surfactant, and 0.1-10 vol % of formic acid based on a total volume of the mixture. During the injecting at least a portion of the gemini cationic surfactant is adsorbed onto the carbonate rock formation, and wherein at least 90% 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 formic acid.
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