F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
103/142
F04B 47/02 (2006.01)
Patent
CA 1139613
ABSTRACT OF THE DISCLOSURE The downhole pump of the present invention includes a piston housing with a plurality of piston assemblies dis- posed 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 valve assemblies disposed therein. One of the inlet poppet valve assemblies is located below and communicates with each of the cylinders for controlling a fluid intake to the cylinders. A plurality of outlet poppet valve assemblies is also disposed in the valve body. One of the outlet poppet valve 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 valve assemblies for preventing discharge fluid from flowing back to the outlet poppet valve 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 valve assemblies.
382826
Company Halliburton
Swabey Ogilvy Renault
LandOfFree
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