Method for enhanced oil recovery through a horizontal production

Details Method for enhanced oil recovery through a horizontal production Method for enhanced oil recovery through a horizontal production

1992-02-21

1993-05-18

Suchfield, George A.

Wells

Processes

Specific pattern of plural wells

166251, 166263, 166 50, E21B 4700, E21B 4706, E21B 43243

Patent

active

052112306

ABSTRACT:
A horizontal production well is located in the lower portion of a heavy viscous oil-bearing reservoir. A vertical injection well is located in the upper portion of the reservoir. Oxygen-enriched gas is injected down the injector well and ignited in the upper portion of the reservoir to create a combustion zone that reduces viscosity of oil in the reservoir as the combustion zone advances downwardly toward the horizontal production well, the reduced-viscosity oil draining into the horizontal production well under force of gravity.

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