E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/35
E21B 43/24 (2006.01) E21B 36/00 (2006.01) E21B 43/30 (2006.01)
Patent
CA 1060786
ABSTRACT OF THE DISCLOSURE ARRANGEMENT FOR RECOVERING VISCOUS PETROLEUM FROM THICK TAR SAND 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 cut 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.
262302
Kirkvold Charles F.
Pisio Peter
LandOfFree
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