Wells – With eduction pump or plunger – Having sediment trap or deflector
Patent
1982-08-26
1984-07-03
Novosad, Stephen J.
Wells
With eduction pump or plunger
Having sediment trap or deflector
166106, 166187, 417269, 417458, E21B 33127, E21B 4100, F04B 116, F04B 3710
Patent
active
044573677
ABSTRACT:
The downhole pump of the present invention includes a piston housing with a plurality of piston assemblies disposed in the piston housing. Each piston assembly includes a piston reciprocatingly disposed in a cylinder. A valve body is connected to the piston housing and includes a plurality of inlet poppet assemblies disposed therein. One of the inlet poppet assemblies is located below and communicated with each of the cylinders for controlling a fluid intake to the cylinders. A plurality of outlet poppet assemblies is also disposed in the valve body. One of the outlet poppet assemblies is located below and communicates with each of the cylinders for controlling a fluid discharge from the cylinders. A master outlet check valve assembly is located below and communicates with all of the outlet poppet assemblies for preventing discharge fluid from flowing back to the outlet poppet assemblies. This master outlet check valve assembly includes a plurality of alternating annular sealing rings and annular separator rings disposed in a first annular cavity communicated with all of the outlet poppet assemblies.
REFERENCES:
patent: 2690224 (1954-09-01), Roberts
patent: 2957421 (1960-10-01), Mock
patent: 3083774 (1963-04-01), Peters et al.
patent: 3291219 (1966-12-01), Nutter
patent: 3319726 (1967-05-01), Brown
patent: 3439740 (1969-04-01), Conover
patent: 3566981 (1971-03-01), Love
patent: 3926254 (1975-12-01), Evans et al.
patent: 4095921 (1978-06-01), Hiraga et al.
Beavers Lucian Wayne
Halliburton Company
Novosad Stephen J.
Walkowski Joseph A.
Weaver Thomas R.
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