Arrangement for recovering viscous petroleum from thick tar sand

Details Arrangement for recovering viscous petroleum from thick tar sand Arrangement for recovering viscous petroleum from thick tar sand

1976-01-19

1977-05-03

Novosad, Stephen J.

Wells

Wells with lateral conduits

166 52, 166 57, 166245, 166272, 166302, E21B 4324

Patent

active

040209016

ABSTRACT:
An arrangement is provided for recovering viscous oil from a tar sand formation having a large vertical dimension including a substantially vertical lined shaft extending through the tar sand formation. A first opening is formed in the lower portion of the shaft lining and at least one lateral hole extends into the formation through the first lateral hole. A plurality of tubular members are positioned in the lateral hole to provide both a closed loop flow path for fluid flow from the shaft into and out of the hole out of contact with the formation and a separate flow path for production fluids from the hole into the shaft. A steam source is connected to the tubular members forming the closed loop flow path. A second opening is formed in the shaft lining and a steam injection conduit extends through the second opening into the formation. The steam injection conduit is connected to the steam source for injecting steam into the formation.

REFERENCES:
patent: 1520737 (1924-12-01), Wright
patent: 1816260 (1931-07-01), Lee
patent: 3024013 (1962-03-01), Rogers et al.
patent: 3129758 (1964-04-01), Closmann
patent: 3285335 (1966-11-01), Reistle, Jr.
patent: 3338306 (1967-08-01), Cook
patent: 3362751 (1968-01-01), Tinlin
patent: 3847219 (1974-11-01), Wang et al.
patent: 3954140 (1976-05-01), Hendrick

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