Recovery of viscous oil by unheated air injection, followed by i

Details Recovery of viscous oil by unheated air injection, followed by i Recovery of viscous oil by unheated air injection, followed by i

1976-01-15

1977-05-24

Purser, Ernest R.

Wells

Processes

In situ combustion

166305R, E21B 4324

Patent

active

040249158

ABSTRACT:
Disclosed is a method for recovering low gravity, viscous petroleum including bitumen from a tar sand deposit by injecting unheated air followed by a soak period so that the viscous petroleum is conditioned by contact with the unheated air, followed by injection air or a mixture of heated air and steam to accomplish in situ combustion or low temperature oxidation within the viscous petroleum formation. The temperature of the unheated air injected in the first phase is less than 250.degree. F and preferably less than 150.degree. F, so as to avoid a combustion reaction between the air and the petroleum in the formation. The preliminary treatment with unheated air results in eliminating or decreasing the tendency for spontaneous ignition to occur at random sites in the formation, and produces more uniform combustion and propagation of the combustion front through the formation, and results in increased oil recovery from the formation.

REFERENCES:
patent: 2839141 (1958-06-01), Walter
patent: 3019837 (1962-02-01), Marx et al.
patent: 3034579 (1962-05-01), Parker
patent: 3205944 (1965-09-01), Walton
patent: 3209825 (1965-10-01), Alexander et al.
patent: 3221809 (1965-12-01), Walton
patent: 3232345 (1966-02-01), Trantham et al.
patent: 3334687 (1967-08-01), Parker
patent: 3375871 (1968-02-01), Parker
patent: 3386507 (1968-06-01), Lumplin
patent: 3499490 (1970-03-01), Needham et al.

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