Title:
Oil production with steam
United States Patent 3312281
US Patent References:
Dual control lift mechanism
- - 2197064

Flow valve
- - 2305250

Heavy oil recovery
- - 2881838

/3126961.html
- - 3126961


Inventors:
Belknap, William B.
Publication Date:
04/04/1967
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Assignee:
PHILLIPS PETROLEUM CO
Primary Class:
166/303
Other Classes:
166/57
International Classes:
E21B43/24; E21B43/16
Foreign References:
GB511768A