Liner setting tool and method

Details Liner setting tool and method Liner setting tool and method

1988-06-15

1989-07-18

Neuder, William P.

Wells

Processes

Placing or shifting well part

166123, 166208, E21B 2302

Patent

active

048484695

ABSTRACT:
An improved setting tool is provided for positioning, setting, and releasing a liner in a subterranean wellbore. The setting tool includes a plurality of fingers, each biased for locking engagement with axially spaced recesses provided in the wall of the tool mandrel axially above a lowermost position of the liner hanger connecting nut. The fingers are automatically forced upward into a release position when interference rollers move radially out of their respective recesses and separate a plurality of axially movable sleeves. Premature release of the liner is avoided by positioning the recesses in the mandrel such that the fingers are in a lock position when the tool string is either in tension or compression. The liner can be rotated after setting the liner hanger, so that the setting tool and drill string can thereafter be reliably retrieved by simple axial pick-up.

REFERENCES:
patent: 4051896 (1977-10-01), Amanchala et al.
patent: 4598774 (1986-07-01), Neuels et al.
patent: 4688642 (1987-08-01), Baker

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