Solvent foam stimulation of coal degasification well

Details Solvent foam stimulation of coal degasification well Solvent foam stimulation of coal degasification well

1981-05-11

1983-07-05

Novosad, Stephen J.

Wells

Processes

Placing fluid into the formation

44 1B, 166308, 299 12, E21B 4326, E21B 4327

Patent

active

043913270

ABSTRACT:
A foamed fluid containing a coal solvent is injected into a coal seam to improve the gas permeability of the coal.

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patent: 3572440 (1971-03-01), Hutchison et al.
patent: 3850477 (1974-11-01), Aldrich et al.
patent: 3990513 (1976-11-01), Perch
patent: 4030893 (1977-06-01), Keller
patent: 4032193 (1977-06-01), Drinkard et al.
patent: 4044833 (1977-08-01), Volz
patent: 4130164 (1978-12-01), Datta
patent: 4253703 (1981-03-01), Fonsela et al.
patent: 4301868 (1981-11-01), Scherubel et al.
Clark et al., "The Use of Fluorochemical Surfactants in Non-Aqueous Stimulation Fluids," SPE 7894, Jul. 18, 1979.

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