Use of carbon dioxide for gas-lifting heavy oil

Details Use of carbon dioxide for gas-lifting heavy oil Use of carbon dioxide for gas-lifting heavy oil

1992-12-18

1994-08-16

Neuder, William P.

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Producing the well

E21B 4312

Patent

active

053378288

ABSTRACT:
A method where gaseous carbon dioxide is used to provide gas lift of a thinned oil. Carbon dioxide is injected in intermittent slugs via an injection tubing that terminates in a productive interval of a formation. Carbon dioxide mixes with thinned oil in the productive interval thereby increasing gas lift and facilitating production of the oil to the surface.

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patent: 3259186 (1966-07-01), Dietz
patent: 4257560 (1981-03-01), Diamond
patent: 4267885 (1981-05-01), Sanderford
patent: 4708595 (1987-11-01), Maloney et al.
patent: 4756369 (1988-07-01), Jennings, Jr. et al.
patent: 5033550 (1991-07-01), Johnson et al.

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