Pump down system for placing and retrieving subsurface well equi

Details Pump down system for placing and retrieving subsurface well equi Pump down system for placing and retrieving subsurface well equi

1979-08-06

1983-02-22

Leppink, James A.

Wells

Means for guiding insertable element laterally of well axis

166156, E21B 706

Patent

active

RE0311553

ABSTRACT:
A pump-down assembly for positioning and retrieving subsurface well equipment in a side pocket mandrel. The assembly is articulated to permit it to move through tubing curves and includes positioning and orienting means. Spring loaded latches in the positioning means mate only with correspondingly configured mandrel recesses so that the assembly can be stopped at the desired subsurface location. Guide surfaces in the orienting means rotate the assembly to the proper position relative to the mandrel side pocket. Placement and retrieval operations of the assembly are controlled by the selective application of hydraulic pressure to the well.

REFERENCES:
patent: 2679904 (1954-06-01), Howard et al.
patent: 3268006 (1966-08-01), Hayes
patent: 3378080 (1968-04-01), Fredd
patent: 3446281 (1969-05-01), Watkins
patent: 3507329 (1970-04-01), Stone, Jr.
patent: 3713483 (1973-01-01), Robicheaux
patent: 3727693 (1973-04-01), Tausch et al.
patent: 3732928 (1973-05-01), Sizer
patent: 3771597 (1973-11-01), McGowen

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