Wells – With eduction pump or plunger – Having liquid-gas separator
Patent
1989-01-09
1989-12-12
Neuder, William P.
Wells
With eduction pump or plunger
Having liquid-gas separator
166165, 166267, E21B 4300
Patent
active
048861162
ABSTRACT:
There is disclosed apparatus for facilitating gas production in a flooded or partially flooded gas well. The well is provided with normal casing perforated in the production zone; tubing of about two inches in diameter is run from the surface inside the casing through the production zone, and the lower end is connected to a tool with a cylinder of about six inches diameter surrounding the tubing for a length from about ten to one hundred feet. The bottom of the cylinder is closed normally; fluid rising from the production zone passes through the restricted area between the cylinder and the casing. Means, such as a compressor, for injecting gas, normally gas from the well, is connected to the top of the tubing; the injected gas passes down the tubing and back up between the walls of the tubing and the cylinder at high velocity with a jet-like thrust between the tubing and the casing thereby causing a pull on the producing zone to enhance production. In some embodiments the cylinder has a pressure operated valve at the top to keep water from filling the tube while the tool is lowered in the hole. A check valve may be provided at the bottom of the cylinder which allows the well to be swabbed without pulling the tubing and which, in favorable circumstances, would allow the well to be produced through the tool without circulation of gas.
REFERENCES:
patent: 3873238 (1975-03-01), Elfarr
patent: 4366861 (1983-01-01), Milam
patent: 4476925 (1984-10-01), Cox
patent: 4787450 (1988-11-01), Andersen et al.
Keegan Robert R.
Neuder William P.
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