Recovery of methane from solid carbonaceous subterranean of form

Details Recovery of methane from solid carbonaceous subterranean of form Recovery of methane from solid carbonaceous subterranean of form

1991-02-11

1992-02-04

Novosad, Stephen J.

Wells

Processes

With indicating, testing, measuring or locating

166245, 166263, 166266, 166269, 166274, E21B 4316, E21B 4340

Patent

active

050852744

ABSTRACT:
A method of recovering methane from a solid carbonaceous subterranean formation includes injecting a gas that desorbs methane through an injection well into a subterranean formation and recovering methane from a first and a second production wells, or from a first and a second layer. Areal and/or vertical sweep efficiency of the injected desorbing gas can be increased by selectively restricting the flow of recovered fluids from the first or the second production well with the highest monitored ratio of injected desorbing gas. The restriction of flow forces the desorbing gas into higher permeability areas of the subterranean formation.

REFERENCES:
patent: 4283089 (1981-08-01), Mazza et al.
patent: 4833122 (1989-11-01), Puri et al.

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