Invention Grant
US08146666B2 Surfactant method for improved oil recovery from subterranean reservoirs
有权
改善从地下水库采收油的表面活性剂方法
- Patent Title: Surfactant method for improved oil recovery from subterranean reservoirs
- Patent Title (中): 改善从地下水库采收油的表面活性剂方法
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Application No.: US12460767Application Date: 2009-07-24
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Publication No.: US08146666B2Publication Date: 2012-04-03
- Inventor: Hongxin Tang
- Applicant: Hongxin Tang
- Applicant Address: US CA Covina
- Assignee: ChemEOR, Inc.
- Current Assignee: ChemEOR, Inc.
- Current Assignee Address: US CA Covina
- Agency: Reidlaw, L.L.C.
- Agent John S. Reid
- Main IPC: E21B43/22
- IPC: E21B43/22 ; E21B43/26 ; E21B43/27

Abstract:
A method to enhance oil recovery from a subterranean reservoir, the reservoir being accessible via a production well. The method includes injecting a surfactant solution that includes surfactants into the production well. The surfactant solution selected to increase an oil-to-water ratio of oil recovery from a porous matrix portion of the reservoir. The method also includes injecting a well-servicing volumetric solution into the production well to perform a second well treatment process. The second well treatment process is selected from the group consisting of a scale inhibition squeeze process, a well acidizing process, a chemical process to reduce water production rate, an acid fracturing process, and a hydraulic fracturing process. In the method, the surfactant solution and the second well treatment solution are injected into the production well within less than about six months of one another.
Public/Granted literature
- US20090288825A1 Surfactant method for improved oil recovery from subterranean reservoirs Public/Granted day:2009-11-26
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