Wells – With heating – refrigerating or heat insulating means
Patent
1976-07-12
1977-11-08
Leppink, James A.
Wells
With heating, refrigerating or heat insulating means
166303, E21B 4324
Patent
active
040571068
ABSTRACT:
An apparatus for injecting hot water into an oil well head to facilitate recovery of residual oil deposits.
REFERENCES:
patent: 3237692 (1966-03-01), Wallace et al.
patent: 3421583 (1969-01-01), Koons
patent: 3980137 (1976-09-01), Gray
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