Enhanced oil recovery process employing carbon dioxide

Details Enhanced oil recovery process employing carbon dioxide Enhanced oil recovery process employing carbon dioxide

1986-05-23

1987-08-04

Suchfield, George A.

Wells

Processes

Cyclic injection then production of a single well

166268, 166273, E21B 4322

Patent

active

046839488

ABSTRACT:
A process for recovering hydrocarbons, e.g., crude petroleum, from a formation comprising: (a) injecting carbon dioxide into the formation; (b) shutting off the wells to the formation to allow the carbon dioxide to contact and disperse in the hydrocarbons in the formation; (c) recovering hydrocarbons from the formation; (d) repeating steps (a), (b) and (c) at least once; (e) injecting a carbonated aqueous liquid composition into the formation to drive the hydrocarbons toward the production well or wells and (f) recovering hydrocarbons from the formation.

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patent: 4509596 (1985-04-01), Emery
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