Wells – Processes – Specific pattern of plural wells
Patent
1994-12-08
1999-01-19
Suchfield, George A.
Wells
Processes
Specific pattern of plural wells
166 50, 1662522, 166263, 1662722, 1662723, 1662727, E21B 4324, E21B 4330
Patent
active
058604758
ABSTRACT:
A thermal oil recovery process is disclosed for use in a heavy oil reservoir having a plurality of laterally separated, generally vertical wells whose use have left the reservoir characterized by a heated depletion zone, a channel, voidage, or mobility and communication. The process includes the steps of: drilling a well having a horizontal section and an opening therein that is located laterally between at least two of the vertical wells and at a depth within the lower part of the reservoir; injecting a steam through the two vertical wells to establish thermal communication with said horizontal well; and using the combination of steam drive and gravity drainage to recover oil from the reservoir through the horizontal well.
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Ejiogu Godwin
McCaffrey William J.
Sander Paul R.
Amoco Corporation
Gabala James A.
Sloat Robert E.
Suchfield George A.
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