E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/24 (2006.01) E21B 43/30 (2006.01)
Patent
CA 2046107
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.
Brannan Geryl Owen
Mccaffrey William Joseph
Amoco Corporation
Gowling Lafleur Henderson Llp
LandOfFree
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