Wells – With below and above ground modification – Eduction pump or plunger in well
Patent
1985-05-15
1986-12-16
Novosad, Stephen J.
Wells
With below and above ground modification
Eduction pump or plunger in well
166106, 417543, E21B 4300
Patent
active
046289941
ABSTRACT:
The invention relates to an oil well comprising a production tubular with a pump barrel attached to its lower end, a reciprocable oil pump having a plunger located within the pump barrel, a sucker rod string extending downwardly from ground level to the plunger for reciprocating the plunger, means for cyclically raising the sucker rod string, a chamber located and arranged so as to be open to oil pressure immediately above the plunger, wherein the chamber is located externally of the production tubular, the chamber is in communication with the interior of the production tubular and the chamber contains a resilient bladder member arranged to occupy normally substantially the whole volume of the chamber to be connected to a source of pressurized gas through a non-return valve, to contain and maintain gas at the static oil pressure and to occupy a reduced volume of the chamber when the oil pressure immediately above the plunger increases due to pressure surges arising from elastic deformation of a column of oil.
REFERENCES:
patent: 2215558 (1940-09-01), Miller
patent: 2764103 (1956-09-01), Mercier
patent: 3198133 (1965-08-01), Elliott
patent: 4372389 (1983-02-01), Hamrick et al.
patent: 4445829 (1984-05-01), Miller
Towner Geoffrey F.
Towner John E. T.
Neuder William P.
Novosad Stephen J.
Texaust Australia Limited
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