Method for recovery of bitumens from tar sands

Details Method for recovery of bitumens from tar sands Method for recovery of bitumens from tar sands

1974-06-21

1976-09-07

Purser, Ernest R.

Wells

Processes

In situ combustion

166272, E21B 4324

Patent

active

039789250

ABSTRACT:
A method for the recovery of low gravity viscous oils or bitumens from a subterranean formation by the injection of a mixture of an oxygen-containing gas and steam to establish a hot communications path, followed by a shutting in of the wells for a period to allow the oxygen to react with the oil or bitumen in the formation and thereafter recovering the oil or bitumens via the production well. The cycle may thereafter be repeated.

REFERENCES:
patent: 2839141 (1958-06-01), Walter
patent: 3209825 (1965-10-01), Alexander et al.
patent: 3292702 (1966-12-01), Boberg
patent: 3375870 (1968-04-01), Satter et al.
patent: 3400762 (1968-09-01), Peacock et al.
patent: 3409077 (1968-11-01), Durie
patent: 3411575 (1968-11-01), Connally
patent: 3411578 (1968-11-01), Holmes
patent: 3500913 (1970-03-01), Nordgren et al.
patent: 3605890 (1971-09-01), Holm
patent: 3680634 (1972-08-01), Peacock et al.

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