Wells – Processes – Specific pattern of plural wells
Patent
1992-07-01
1993-12-28
Suchfield, George A.
Wells
Processes
Specific pattern of plural wells
166 50, 166263, 166272, E21B 4324, E21B 4330
Patent
active
052731111
ABSTRACT:
A method which combines fluid drive and gravity drainage to produce hydrocarbons from a subterranean formation comprises injecting a fluid through at least two upper horizontal wells out into the formation for moving hydrocarbons from the formation into at least one lower horizontal well through which the hydrocarbons are produced, wherein each lower horizontal well is spaced laterally and vertically below and between two respective upper horizontal wells; and producing hydrocarbons through the at least one lower horizontal well at a cumulative rate faster than the cumulative rate of the fluid injected into the upper horizontal wells. The method further comprises injecting a fluid and producing hydrocarbons as just described but with additional upper and lower horizontal wells longitudinally spaced from the first-mentioned upper and lower horizontal wells so that each of the lower horizontal wells operates as a discrete production well.
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Brannan Geryl O.
McCaffrey William J.
Amoco Corporation
Gabala James A.
Kretchmer Richard A.
Sroka Frank J.
Suchfield George A.
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