Downhole jet pumps

Pumps – One fluid pumped by contact or entrainment with another – Jet

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Details

166106, F04F 500

Patent

active

041837223

ABSTRACT:
A jet pump for use downhole in a borehole for producing fluid from the wellbore by employment of a power fluid supplied from the surface of the ground. The power fluid flows through the jet pump assembly to cause a pumping action. The jet pump includes a suction chamber formed about a nozzle. The nozzle is spaced from a venturi throat. The venturi throat diverges in a direction away from the nozzle. A deflecter has one end supported by the pump body and a reduced convergent marginal free end which is received within the divergent throat thereby forming an annulus between the throat and the deflecter. The annular area increases in an outward direction respective to the nozzle. The power fluid exits from the nozzle and enters the inlet of the venturi causing produced fluid to be pulled into the throat entrance. The mixed fluids continue to flow through the throat and about the deflecter and out of the venturi as the fluids are forced to continue through the pump and then to the surface of the earth. The deflecter causes the power fluid to act against a greater surface area thereby utilizing all of the power fluid to its maximum advantage.

REFERENCES:
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patent: 2191717 (1940-02-01), Jeffery

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