04353806 is referenced by 91 patents and cites 15 patents.

A polymer-microemulsion complex useful for the enhanced recovery of crude oil is disclosed. The polymer is polyethylene oxide or polyvinyl pyrrolidone and interacts with the surfactant of the microemulsion to form a physical association. The resulting complex is characterized by a complexation energy of at least 2 Kcal/mole. The polymer microemulsion complexes are stable at high salinity, reduce adsorption and retention by the formation, lower interfacial tension, achieve retentions as low as 0.1 mg surfactant/gm sand at high salinity and provide for early banking, as well as high recovery of oil.

Title
Polymer-microemulsion complexes for the enhanced recovery of oil
Application Number
6/136936
Publication Number
4353806
Application Date
April 3, 1980
Publication Date
October 12, 1982
Inventor
Edward G Baker
Berkeley Heights
NJ, US
Max L Robbins
South Orange
NJ, US
Nathan H Canter
Edison
NJ, US
Agent
James H Takemoto
Assignee
Exxon Research and Engineering Company
NJ, US
IPC
E21B 43/22
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