Method of recovering viscous petroleum from an underground forma

Details Method of recovering viscous petroleum from an underground forma Method of recovering viscous petroleum from an underground forma

1975-10-30

1977-07-26

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166302, E21B 4324

Patent

active

040376583

ABSTRACT:
Recovery of viscous petroleum such as from tar sands is assisted using a controlled flow of hot fluid in a flow path within the formation but out of direct contact with the viscous petroleum; thus a solid-wall, hollow tubular member in the formation is used for conducting hot fluid to reduce the viscosity of the petroleum to develop a potential passage in the formation outside the tubular member into which a drive fluid is injected to promote movement of the petroleum to a production position.

REFERENCES:
patent: 1634235 (1927-06-01), Ranney
patent: 1634236 (1927-06-01), Ranney
patent: 2786660 (1957-03-01), Alleman
patent: 2980184 (1961-04-01), Reed
patent: 3024013 (1962-03-01), Rogers et al.
patent: 3205012 (1965-09-01), Dancy
patent: 3338306 (1967-08-01), Cook
patent: 3386508 (1968-06-01), Bielstein et al.
patent: 3881551 (1975-05-01), Terry et al.

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