Wells – Processes – Distinct – separate injection and producing wells
Patent
1974-10-29
1976-06-22
Abbott, Frank L.
Wells
Processes
Distinct, separate injection and producing wells
166303, E21B 4316
Patent
active
039645479
ABSTRACT:
A method of producing highly viscous oil from an underground formation penetrated by a well. Steam is injected through a first channel into the lower part of the formation. At the same time, previously recovered oil from the formation is injected through the well in a channel surrounding the steam channel to the upper part of the formation. This native oil insulates the formation from the steam and also serves to block the steam from rising in the formation. The heated oil can then be recovered from an adjacent well or injection can be stopped and the oil can be recovered from the well through which the fluid was injected.
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Buxton Thomas S.
Hujsak Karol L.
Abbott Frank L.
Amoco Production Company
Ebel Jack E.
Gassett John D.
Hawley Paul F.
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