Wells – Processes – Distinct – separate injection and producing wells
Patent
1977-10-11
1978-10-17
Novosad, Stephen J.
Wells
Processes
Distinct, separate injection and producing wells
166245, 166 52, 166 57, E21B 4324
Patent
active
041203577
ABSTRACT:
Recovery of viscous petroleum such as from a thick tar sand formation is assisted using a closed-loop flow path formed in a production well extending from the earth's surface through a substantial portion of the formation for conducting hot fluid to reduce the viscosity of the petroleum in the formation to develop a first potential passage in the formation outside the flow path into which a hot drive fluid is injected through a injection well to promote movement of the petroleum to the production well for production and to develop a second potential passage for fluid flow in the formation from a linearly spaced apart injection well for injection of a hot drive fluid to further promote movement of additional petroleum to the production well.
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Chevron Research Company
Freeland, Jr. R. L.
Keeling Edward J.
Novosad Stephen J.
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