Combination gas producing and waste-water disposal well

Wells – Automatic

Patent

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Details

166305D, E21B 4100

Patent

active

044297408

ABSTRACT:
The present invention is directed to a waste-water disposal system for use in a gas recovery well penetrating a subterranean water-containing and methane gas-bearing coal formation. A cased bore hole penetrates the coal formation and extends downwardly therefrom into a further earth formation which has sufficient permeability to absorb the waste water entering the borehole from the coal formation. Pump means are disposed in the casing below the coal formation for pumping the water through a main conduit towards the water-absorbing earth formation. A barrier or water plug is disposed about the main conduit to prevent water flow through the casing except for through the main conduit. Bypass conduits disposed above the barrier communicate with the main conduit to provide an unpumped flow of water to the water-absorbing earth formation. One-way valves are in the main conduit and in the bypass conduits to provide flow of water therethrough only in the direction towards the water-absorbing earth formation.

REFERENCES:
patent: 3195633 (1965-07-01), Jacob
patent: 3333638 (1967-08-01), Bishop
patent: 3363692 (1968-01-01), Bishop
patent: 4241787 (1980-12-01), Price
patent: 4248305 (1981-02-01), Scarbrough

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