Wells – With below and above ground modification – Eduction pump or plunger in well
Patent
1990-08-02
1992-03-24
Neuder, William P.
Wells
With below and above ground modification
Eduction pump or plunger in well
166 53, 166 72, 166105, 254270, 254379, E21B 1908, E21B 3710, E21B 4300
Patent
active
050979019
ABSTRACT:
An improved mobile pumping apparaus for producing fluids from, for instance, shallow and/or slow-flowing marginal oil wells. The invention comprises a boom assembly which is adapted for mounting on a tractor, truck, or other vehicle having a standpipe mounted on the front thereof which is lowered into engagement with a wellhead and a winch having a cable attached at one end thereto, the other end of the cable extending down into the standpipe and having a swab bar attached thereto. The swab bar is provided with a heavy lead weight, so that the swab bar will sink down into the fluid as the cable is wound off of the winch, and a plurality of cups for lifting the fluid up out of the well when the direction of the winch is reversed. The oil is lifted up out of the well into the standpipe and on into a hose for collection in a storage tank. The boom is provided with a telescoping member and a hydraulic cylinder having a hook mounted on the ram thereof for opening the well from which the fluid is to be lifed, the boom telescoped outwardly to align the standpipe with the wellhead, and the well closed, all without moving the vehicle to which the boom assembly is mounted.
The swab bar attached to the end of the cable is configured so as to decrease the likelihood that the swab bar lodge in the well, and the winch is mounted on a carriage moveable between a first operative position and a second position for freeing the swab bar when struck in the well. The standpipe is also pivotedly mounted to the boom assembly to prevent damage to the standpipe or the wellhead in the event the operator attempts to drive away from the wellhead before the standpipe has been raised out of engagement with the wellhead. The pivotal mounting also serves to prevent damage to the standpipe when the winch is moved from first position to second position during attempts to dislodge the swab bar from the well.
REFERENCES:
patent: 3989106 (1976-11-01), Taylor
patent: 4585061 (1986-04-01), Lyons, Jr. et al.
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