Wells – Processes – Placing fluid into the formation
Patent
1996-05-03
1998-02-24
Neuder, William P.
Wells
Processes
Placing fluid into the formation
E21B 4325
Patent
active
057203504
ABSTRACT:
A method for recovering oil from a gravity drainage oil-bearing formation from which at least a major portion of the oil in place has been recovered through at least one production well penetrating the formation from the surface, the method comprising injecting an oil miscible solvent having a density slightly greater than a gas contained in a gas cap above the oil liquid level in the formation through a production well completed to inject the oil miscible solvent into an upper portion of the formation for a period of time equal to at least one week; recompleting the well for the production of oil from a lower portion of the formation; and producing oil through the well from the lower portion of the formation.
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Atlantic Richfield Company
Neuder William P.
Scott F. Lindsey
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