Tool for servicing wells

Details Tool for servicing wells Tool for servicing wells

1975-06-02

1976-11-09

Leppink, James A.

Wells

With eduction pump or plunger

With packer or plug

417434, E21B 4300

Patent

active

039905098

ABSTRACT:
A tool for use in wells having a first assembly with an internal fluid passage and a port interconnecting the exterior of the first assembly and the passage; a mechanism borne by the first assembly for releasably securing the first assembly in a well in a selected position; a housing enclosing a fluid chamber mounted on the first assembly; a second assembly having an end portion received in the fluid chamber for reciprocal movement in pumping relation to and from the first assembly and an opposite end portion adapted for connection to a pipe string in depending relation; and a valve mechanism selectively operable, upon movement of the end portion of the second assembly to the first assembly, to allow fluid movement from the second assembly into the fluid passage of the first assembly and, upon reciprocal movement of the end portion within the fluid chamber, to pump fluid through the port and first assembly into the second assembly and pipe string.

REFERENCES:
patent: 3158200 (1964-11-01), Malone
patent: 3282340 (1966-11-01), Park
patent: 3414057 (1968-12-01), Harbison
patent: 3561534 (1971-02-01), Dendy

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