Means of injecting CO.sub.2 into circulation tubing to facilitat

Details Means of injecting CO.sub.2 into circulation tubing to facilitat Means of injecting CO.sub.2 into circulation tubing to facilitat

1992-12-18

1995-01-03

Neuder, William P.

Wells

Processes

Producing the well

166 53, F21B 4300

Patent

active

053777646

ABSTRACT:
A method for removing a viscous hydrocarbonaceous fluid or oil from a formation where carbon dioxide is utilized. Gaseous carbon dioxide is injected, by a pre-set time interval or a computer actuated valve means, into a well near a productive interval. Injection continues for a time sufficient for the carbon dioxide and oil to mix thereby decreasing the oil's viscosity and facilitating gas lift of an oil of reduced viscosity to the surface.

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patent: 4420008 (1983-12-01), Shu
patent: 4756369 (1988-07-01), Jennings, Jr. et al.
patent: 5211242 (1993-05-01), Coleman et al.

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