Downhole tool for assisting in separating and reconnecting well

Details Downhole tool for assisting in separating and reconnecting well Downhole tool for assisting in separating and reconnecting well

1995-01-30

1996-05-21

Dang, Hoang C.

Wells

Central chamber sealed with respect to prepositioned...

1662427, E21B 2300, E21B 3310

Patent

active

055180728

ABSTRACT:
A downhole tool comprising a stinger body including a tubular extension adapted to be inserted into a first end portion of a well tubing, a seal carried on the tubular extension for sealably engaging an interior surface of the first end portion of the well tubing; and a sleeve carried by the stinger body and shiftable from a retracted position when the tubular extension is inserted into the first end portion of the well tubing, to an extended position covering the seal when the tubular extension is removed from the first end portion of the well tubing. The sleeve is held in position covering and protecting the seal by either a set of spring loaded lugs or a set of shear pins.

REFERENCES:
patent: 3378077 (1968-04-01), Elliston
patent: 4363358 (1982-12-01), Ellis
patent: 4374543 (1983-02-01), Richardson
patent: 4657077 (1987-04-01), Smith, Jr. et al.
patent: 5033551 (1991-07-01), Grantom

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