Combination wire line releasable overshot and pull tool

Details Combination wire line releasable overshot and pull tool Combination wire line releasable overshot and pull tool

1975-07-09

1977-12-06

Marbert, James B.

Handling: hand and hoist-line implements

Grapple

Well type

285360, 175315, 294 8628, 294 8629, 294 8633, E21B 3112

Patent

active

040613895

ABSTRACT:
A wire line oil tool adapted for multiple connectors on the bottom. It can be used as an overshot, a fishing neck grapple or an inside grapple. It incorporates an outer body which is annular about a central member. A catch mechanism locks the outer body up or down relative to the inner body. The catch mechanism enables the tool to operate on jarring. On jarring, the two parts move relatively to an up or down position. In the down position, the appendages at the bottom of the tool open to engage a fishing neck or the like. In the up position, it is latched or held. If retrieval of the tool is impeded, subsequent jarring will reverse the catch mechanism and release the fishing neck. The device is particularly adapted to be used on wire line retrieval and running operations. In the event an item is grasped which cannot be retrieved, subsequent jarring will achieve release and retrieval of the tool.

REFERENCES:
patent: 2250463 (1941-07-01), Boynton
patent: 2301377 (1942-11-01), Craig et al.
patent: 2687323 (1954-08-01), Stohn
patent: 2745693 (1956-05-01), McGill
patent: 2814523 (1957-11-01), Stohn
patent: 2893491 (1959-07-01), Crowe
patent: 3211479 (1965-10-01), Brown
patent: 3628822 (1971-12-01), Bostock
patent: 3960399 (1976-06-01), Dufrene

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