Invention Grant
US07770641B2 Method for enhancing oil recovery with an improved oil recovery surfactant
有权
用改进的油回收表面活性剂提高油回收率的方法
- Patent Title: Method for enhancing oil recovery with an improved oil recovery surfactant
- Patent Title (中): 用改进的油回收表面活性剂提高油回收率的方法
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Application No.: US11959151Application Date: 2007-12-18
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Publication No.: US07770641B2Publication Date: 2010-08-10
- Inventor: Varadarajan Dwarakanath , Curtis Bay Campbell , Tanmay Chaturvedi , Theresa Ann Denslow , Adam Jackson , Taimur Malik , Gabriel Prukop , Sophany Thach
- Applicant: Varadarajan Dwarakanath , Curtis Bay Campbell , Tanmay Chaturvedi , Theresa Ann Denslow , Adam Jackson , Taimur Malik , Gabriel Prukop , Sophany Thach
- Applicant Address: US CA San Ramon
- Assignee: Chevron U.S.A. Inc.
- Current Assignee: Chevron U.S.A. Inc.
- Current Assignee Address: US CA San Ramon
- Agent Christopher D. Northcutt
- Main IPC: E21B43/22
- IPC: E21B43/22 ; E21B43/16

Abstract:
A method for enhancing oil recovery includes the step of providing a subsurface reservoir containing hydrocarbons therewithin. A wellbore is provided in fluid communication with the subsurface reservoir. A surfactant-polymer solution is formed for injection into the reservoir. The surfactant-polymer solution is formed by mixing a composition with at least one surfactant, at least one polymer, and at least one co-solvent or co-surfactant such that the surfactant-polymer solution is clear and aqueous stable. The surfactant-polymer solution is injected through the wellbore into the reservoir. A chaser solution is formed for injection into the reservoir. The chaser solution has an additional predetermined quantity of the co-solvent or co-surfactant. The chaser solution is injected through the injection wellbore into the reservoir to increase the production of hydrocarbons from the reservoir while maintaining the clear and aqueous stability of the surfactant-polymer solution.
Public/Granted literature
- US20090151941A1 Method For Enhancing Oil Recovery With An Inproved Oil Recovery Surfactant Public/Granted day:2009-06-18
Information query
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