Slip assembly for hydraulic pipe testing

Details Slip assembly for hydraulic pipe testing Slip assembly for hydraulic pipe testing

1982-06-01

1984-04-24

Purser, Ernest R.

Wells

Expansible anchor or casing

With wedge or cam and friction drag

166138, E21B 2300

Patent

active

044442548

ABSTRACT:
In accordance with an illustrative embodiment of the present invention, an anchor apparatus for preventing downward movement of a hydraulic testing unit in a tubing string includes a tubular body carrying inwardly biased slip members, a control rod telescopically received in the body for movement between an upper position enabling retraction of the slip members and a lower position where an expander member on the lower end thereof shifts said slip members outwardly into gripping engagement with the tubing wall, and a lug on the control rod above the expander member cooperable with a jay-sleeve arranged internally of the body for preventing and enabling expansion of the slip members.

REFERENCES:
patent: 1892442 (1932-12-01), Wickersham
patent: 2319493 (1943-05-01), Drinkard
patent: 2829718 (1958-04-01), Johns
patent: 2832417 (1958-04-01), Webber
patent: 3288220 (1966-11-01), Rouse
patent: 3298442 (1967-01-01), Kisling
patent: 3493046 (1970-02-01), Johnson et al.

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