Polymer-microemulsion complexes for the enhanced recovery of oil

Details Polymer-microemulsion complexes for the enhanced recovery of oil Polymer-microemulsion complexes for the enhanced recovery of oil

1980-04-03

1982-10-12

Guynn, Herbert B.

Compositions

Leather or fur treating

166273, 166274, E21B 4322

Patent

active

043538061

ABSTRACT:
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.

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Shirahama, Colloid and Polymer Sci., vol. 252, 1974, pp. 978-981.

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