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U.S. Department of Energy
Office of Scientific and Technical Information

Soluble oil composition

Patent ·
OSTI ID:7299606

The oil-external microemulsion contained Petronate CR (oil-soluble alkyl aryl monosulfonates), Pyronate 30 (water-soluble alkyl aryl monosulfonates), Illinois crude oil (gravity 39/sup 0/ API), butyl Cellosolve, and 4 percent by volume water. Six-foot packs of Nevada 130 sand were saturated with brine, flooded with Illinois crude, and waterflooded with brine. A maximum recovery of 88.3 percent OIP was obtained by the surfactant slug, the polymer (Pusher 500) flood, and a brine drive fluid. The volume ratio of oil-soluble to water-soluble surfactant was 2.5.

Assignee:
Union Oil Co. of California
Patent Number(s):
US 3697424
OSTI ID:
7299606
Country of Publication:
United States
Language:
English