Enhanced oil recovery process

Details Enhanced oil recovery process Enhanced oil recovery process

1989-10-17

1990-09-04

Suchfield, George A.

Wells

Processes

Separating material entering well

166 50, 166268, 166292, 1663051, E21B 33138, E21B 4312, E21B 4316

Patent

active

049536192

ABSTRACT:
An enhanced oil recovery process is described wherein oil is recovered from a depleted water-wet formation by the application of a gas to the formation. The flow of gas through the formation causes oil droplets to spontaneously form an oil film on connate water, which is extruded and discharged from the pores. The films pass through the formation under the influence of gravity, gradually accumulating more oil to form an oil mass which enters the producing well bore. A sem-permeable membrane may be used to prevent the inert gas from entering the well bore from the formation.

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Secondary Recovery of Oil in the U.S., 2nd. Ed., pp. 592, 610-614, 623-627, published by American Petroleum Institute, 1950.

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