Method for recovering petroleum

Details Method for recovering petroleum Method for recovering petroleum

1982-08-06

1985-08-06

Novosad, Stephen J.

Wells

Processes

Separating material entering well

166261, 166272, 166303, E21B 4324

Patent

active

045329923

ABSTRACT:
A process for recovering petroleum from deposits which have already been worked by primary extraction or are not suited for primary extraction. A gas in its supercritical state is introduced into the deposit. The supercritical gas charges itself with the petroleum while flowing through the deposit. The charged supercritical gas leaves the deposit and the petroleum is separated in a plurality of fractions from the charged supercritical gas.

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patent: 3381523 (1968-05-01), Nettles
patent: 3842910 (1974-10-01), Zingg et al.
patent: 3969196 (1976-07-01), Zosel
patent: 4048078 (1977-09-01), Allen
patent: 4108760 (1978-08-01), Williams et al.
patent: 4212354 (1980-07-01), Guinn
patent: 4384614 (1983-05-01), Justheim
patent: 4446921 (1984-05-01), Coenen et al.

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