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
  • Application No.: US12460767
    Application Date: 2009-07-24
  • Publication No.: US08146666B2
    Publication 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
Surfactant method for improved oil recovery from subterranean reservoirs
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.
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