Wells – Processes – Producing the well
Patent
1987-06-10
1989-03-21
Massie, Jerome W.
Wells
Processes
Producing the well
166105, 417 56, 417 58, 417511, 417514, E21B 4300
Patent
active
048134856
ABSTRACT:
The pumping or swabbing device and apparatus of the invention utilizes an elongate barrel slidable upwardly and downwardly on an axial rod which carries a valve element for closing on a valve seat provided interiorly of the barrel to close passage through the barrel of down-hole pressure fluid and cause such fluid to raise barrel and rod of the device through a gas and oil well casing to the wellhead, where liquid above the device is pushed to discharge at the wellhead. Spring actuated detent latching elements coact with a pair of longitudinally spaced lower and upper latching recesses to hold the barrel and rod together against relative movement in lower valve-closed and upper valve-opened positions. A sealing packer encircles the barrel and a by-pass passage thereinto leading from and back into the barrel flow passage provides sealing pressure within such packer as the device rises in the well casing. A manually or pressure operated latch provides for holding the device in the wellhead as desired.
REFERENCES:
patent: 2714855 (1955-08-01), Brown
patent: 2970547 (1961-02-01), McMurry
patent: 3090316 (1963-05-01), Montgomery
patent: 3424093 (1969-01-01), Moore, Jr.
patent: 4070134 (1978-01-01), Gramling
patent: 4528896 (1985-07-01), Edwards
patent: 4629004 (1986-12-01), Griffin
Ed Walther, Consulting Editor, "AutoSwab Makes Small Wells Profitable", Well Servicing, Nov./Dec. 1986, p. 25.
ConCoyle Oilfield Tools, Inc.
Mallinckrodt Philip A.
Mallinckrodt Robert R.
Massie Jerome W.
Neuder William P.
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