Down hole pump and testing apparatus

Details Down hole pump and testing apparatus Down hole pump and testing apparatus

1979-07-12

1981-01-27

Leppink, James A.

Wells

With eduction pump or plunger

With packer or plug

166187, 166191, E21B 4300, E21B 33127

Patent

active

042469643

ABSTRACT:
A downhole testing apparatus has a modular construction including a pump assembly, a screen assembly, a first packer assembly, an intake port assembly, and a second packer assembly. The pump assembly includes an improved ratchet assembly for opening and closing a relief port of a discharge passage of said pump. The pump assembly is constructed so that said ratchet assembly and the moving components of the pump are covered with a lubricating fluid contained between upper and lower seals.

REFERENCES:
patent: 2690224 (1954-09-01), Roberts
patent: 3083774 (1963-04-01), Peters et al.
patent: 3291219 (1966-12-01), Nutter
patent: 3439740 (1969-04-01), Conover
patent: 3926254 (1975-12-01), Evans et al.

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