Apparatus for running, setting and testing a compression-type we

Details Apparatus for running, setting and testing a compression-type we Apparatus for running, setting and testing a compression-type we

1976-03-03

1977-04-26

Leppink, James A.

Wells

Packers or plugs

With expanding anchor

166182, 166208, 285 18, E21B 2300, E21B 4310

Patent

active

040195791

ABSTRACT:
An apparatus and method for running a compression-type annulus packoff on a drill or other pipe string into an oil or gas well, setting the packoff without rotating the drill string, and then shifting the axial load of the drill string from the packoff to a casing hanger or other suitable well element so that the packoff can be pressure tested under conditions closely simulating normal service conditions. The apparatus comprises an hydraulically actuated well tool that functions both as a means for connecting the packoff to the drill string on which the tool and packoff are run as an assembly into the well, and also as a means for converting hydraulic pressure in the drill string into torque and then transmitting this torque to the packoff for rotating its seal-compressing element, thereby compressing its seal into fluid-tight engagement with the adjacent well elements. The tool can be employed for running and setting a plurality of packoffs at different levels in a wellhead or other outer well element, and can be retrieved from the well after completion of the setting procedure simply by lifting the drill string.

REFERENCES:
patent: 3357486 (1967-12-01), Brown
patent: 3693714 (1972-09-01), Baugh
patent: 3807497 (1974-04-01), Baugh
patent: 3897823 (1975-08-01), Ahlstone
patent: 3903965 (1975-09-01), Ahlstone

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