Use of land-fill gas to stimulate crude oil production and to re

Details Use of land-fill gas to stimulate crude oil production and to re Use of land-fill gas to stimulate crude oil production and to re

1980-02-11

1982-03-23

Novosad, Stephen J.

Wells

Processes

Separating material entering well

166266, E21B 4316, E21B 4340

Patent

active

043208029

ABSTRACT:
Land-fill gas containing principally methane and carbon dioxide is injected into a partially depleted oil reservoir to stimulate crude oil production. Solution of injected gas, especially carbon dioxide, in the crude oil materially reduces its viscosity which together with pressurization increases oil flow. Gas separated from produced oil is fractionated into valuable methane-rich gas and carbon dioxide-rich gas which is recycled to the oil reservoir. Part or all of the land-fill gas may be first fractionated and the resultant carbon dioxide-rich gas then injected into the reservoir.

REFERENCES:
patent: 2623596 (1952-12-01), Whorton et al.
patent: 2729291 (1956-01-01), Haverfield
patent: 2875832 (1959-03-01), Martin
patent: 2880801 (1959-04-01), Crump
patent: 3130026 (1964-04-01), Becker
patent: 3193006 (1965-07-01), Lewis
patent: 3442332 (1969-05-01), Keith
patent: 3453835 (1969-07-01), Hochgesand
patent: 3975172 (1976-08-01), Ranke
patent: 4026355 (1977-05-01), Johnson et al.

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