Remedial treatment for coal degas wells

Details Remedial treatment for coal degas wells Remedial treatment for coal degas wells

1989-02-14

1990-04-03

Suchfield, George A.

Wells

Processes

Placing fluid into the formation

1663051, 166312, 166371, 299 12, E21B 3700, E21B 4326

Patent

active

049132377

ABSTRACT:
A remedial treatment for coal degas wells is described which enhances the production flow of gas and/or water from the wells. The treatment comprises the steps of: (a) injecting an aqueous foam through the wellbore and into the coal seam(s) at a pump rate of about 10 to about 40 BPM; and (b) flowing back the well at the maximum rate through an open, unrestricted choke.

REFERENCES:
patent: 3100528 (1963-08-01), Plummer et al.
patent: 3136361 (1964-06-01), Marx
patent: 3412797 (1968-11-01), Huitt et al.
patent: 3662828 (1972-05-01), Hutchison
patent: 3937283 (1976-02-01), Blauer et al.
patent: 4391327 (1983-07-01), De Carlo
patent: 4471840 (1984-09-01), Lasseter et al.
patent: 4679630 (1987-07-01), Wyman

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