Oxy USA Inc.

John P Slater

Daryl K Duvall

Disclosed is an apparatus for recovering gas from an underground source of gas and water and for disposing of water from the source into a porous stratum above the source. A casing having perforations at the level of the porous stratum extends from the surface into the source. A first mandrel inside the casing is above the perforations and a second mandrel inside the casing is below the perforations. Each mandrel has a first and a second passageway therethrough. A perforated tube connects the first passageways of the first and second mandrels and a bypass tube connects the second passageways of the first and second mandrels. A first tube extends from the surface to the first passageway of the first mandrel and a second tube extends from the first passageway of the second mandrel into the source. A sucker rod extends from the surface through the inside of the first, perforated, and second tubes into the source. A pump in the source is actuated by the sucker rod for pumping water up the tubes to a level above the perforations. There is a first seal between the sucker rod and the inside of the first tube or the perforated tube above the perforations, normally at the surface, a second seal between the first mandrel and the casing, and a third seal between the second mandrel and the casing.

Uphole disposal tool for water producing gas wells

A downhole or subterranean tool for use with a subsurface strata producing both hydrocarbon gas and water in which the gas and water are separated downhole by gravity and the gas is produced to the surface through one channel, and the water is disposed into a lower subterranean disposal zone. A production tubing is suspended within a casing which lines a well bore drilled through the two zones. A sucker rod actuated reciprocating pump is located in the production tubing. A seating nipple bypass tool with longitudinal holes and side ports in the wall thereof surrounds the pump. This bypass tool is positioned between the producing zone and a lower zone which is to be used as a disposal zone for the salt water. Gas is produced upwardly through the annulus between the tubing and the casing, and the salt water is flowed down through the longitudinal tubes in the sleeve to be disposed in the lower zone.

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Guymon, OK, United States of America

John P Slater