Recovery of petroleum from viscous petroleum-containing formatio

Details Recovery of petroleum from viscous petroleum-containing formatio Recovery of petroleum from viscous petroleum-containing formatio

1977-09-28

1979-01-09

Novosad, Stephen J.

Wells

Processes

Cyclic injection then production of a single well

166261, 166272, 166274, E21B 4322, E21B 4324

Patent

active

041333829

ABSTRACT:
A method for the in-situ recovery of low API gravity oils or bitumen from subterranean hydrocarbon-bearing formations wherein the recovery is optimized by the injection of a mixture of an oxygen-containing gas and steam until the recovery efficiency declines, followed by the injection of a mixture of light hydrocarbon and steam, under operating conditions that may utilize pressurization and drawdown cycles.

REFERENCES:
patent: 2862558 (1958-12-01), Dixon
patent: 2906337 (1959-09-01), Hennig
patent: 3263750 (1966-08-01), Hardy
patent: 3399721 (1968-09-01), Strange
patent: 3830300 (1974-08-01), Allen
patent: 3945435 (1976-03-01), Barry
patent: 3946810 (1976-03-01), Barry
patent: 3993132 (1976-11-01), Cram et al.
patent: 4006778 (1977-02-01), Redford et al.

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