Polymer-microemulsion complexes for the enhanced recovery of oil
Patent
·
OSTI ID:5956160
A polymer-microemulsion complex useful for the enhanced recovery of crude oil is described. 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.
- Assignee:
- Exxon Research and Engineering Co.
- Patent Number(s):
- US 4353806
- OSTI ID:
- 5956160
- Country of Publication:
- United States
- Language:
- English
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