United States Patent 2734578

Publication Date:
02/14/1956
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Primary Class:
166/402
Other Classes:
166/272.100, 166/52, 60/39.550, 166/57
International Classes:
E21B36/02; E21B43/24; E21B36/00; E21B43/16
US Patent References:
1828784Pressure fluid generator
1913395Underground gasification of carbonaceous material-bearing substances
2173556Method of and apparatus for stripping oil sands
2476185Combustion chamber with refractory lining
2584606Thermal drive method for recovery of oil