Shifting tool

Details Shifting tool Shifting tool

1982-09-24

1984-03-13

Purser, Ernest R.

Wells

Expansible anchor or casing

Spring set

166237, 166382, 285 2, E21B 2300

Patent

active

044361521

ABSTRACT:
An improved shifting tool connectable in a well tool string and useful to engage and position a slidable sleeve in a sliding sleeve device in a well flow conductor. The selectively profiled shifting tool keys provide better fit with and more contact area between keys and slidable sleeves. When the engaged slidable sleeve cannot be moved up and the shifting tool is not automatically disengaged, emergency disengagement means may be utilized by applying upward force to the shifting tool sufficient to shear pins and cause all keys to be cammed inwardly at both ends to completely disengage for removal of the shifting tool from the sliding sleeve device.

REFERENCES:
patent: 3051243 (1962-04-01), Grimmer et al.
patent: 3552718 (1968-03-01), Schwegman
patent: 3606296 (1969-04-01), Schwegman
patent: 3845815 (1974-11-01), Garwood
patent: 3874634 (1975-04-01), Gazda
patent: 3990511 (1976-11-01), Gazda
patent: 4043392 (1977-08-01), Gazda
patent: 4161984 (1979-07-01), Watkins
patent: 4378839 (1983-04-01), Fisher

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