Running and pulling tool

Details Running and pulling tool Running and pulling tool

1991-10-15

1993-03-30

Stormer, Russell D.

Handling: hand and hoist-line implements

Grapple

Well type

294 8625, E21B 2300

Patent

active

051977737

ABSTRACT:
An improved running or pulling tool which automatically connects to a lock mandrel when the improved tool dogs are inserted into a lock mandrel fishing neck. The dogs are releasably positioned for automatic connection by lower shear members. The tool is releasably positioned in a configuration for downward jarring by upper shear members. When operating to lock a lock mandrel in or unlock a lock mandrel for retrieval from a well conduit, the improved tool may be jarred repeatedly upwardly or downwardly as required. The improved tool may be disconnected and released from the lock mandrel at any time during locking or unlocking operations by jarring upwardly to shear the upper members followed by downward jarring to shear the lower members. The tool may be operated to release by downward jarring if the tool skirt or core contacts a lock mandrel fishing neck.

REFERENCES:
patent: 4295528 (1981-10-01), Carmady
patent: 4538681 (1985-09-01), Johnston
patent: 4558895 (1985-12-01), Tamplen
patent: 4767145 (1988-08-01), Bullard
patent: 4838594 (1989-06-01), Bullard
patent: 4848820 (1989-07-01), Morrell
patent: 5066060 (1991-11-01), Cooksey et al.

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