Visco-elastic low tension chemical oil displacement method for raising crude oil productivity

Visco-elastic low tension chemical oil displacement method for raising crude oil productivity

  • CN 1,346,012 A
  • Filed: 09/30/2000
  • Published: 04/24/2002
  • Est. Priority Date: 09/30/2000
  • Status: Abandoned Application
First Claim
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1. , a kind of chemical displacement of reservoir oil new method that is used to improve oil recovery factor, it is characterized in that:

  • use high resiliency polymer and low-tension surfactant simultaneously, the aqueous solution and crude oil that the surfactant of selecting is mixed with can form low interfacial tension, water is salt solution or salinity water, salinity or salinity are 0-10%, are preferably 0-0.4%.

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