Handling: hand and hoist-line implements – Grapple – Well type
Patent
1974-06-03
1976-03-16
Blunk, Evon C.
Handling: hand and hoist-line implements
Grapple
Well type
294 8615, 294 8618, 294 8624, 294 8634, E21B 3102
Patent
active
039442730
ABSTRACT:
A retrieving tool has resilient fingers engageable with a pulling collar of the actuator ring of a wedge locked underwater wellhead packing to release the lock and the packing for retrieval from the wellhead. The retrieving tool has a body connected to a running pipe string and provided with washing ports. In one form the resilient fingers are releasable from the pulling collar in response to fluid pressure supplied through the running string.
REFERENCES:
patent: 1757363 (1930-05-01), Fischbach
patent: 1917135 (1933-07-01), Littell
patent: 2232949 (1941-02-01), Jones et al.
patent: 2243419 (1941-05-01), Festervan et al.
patent: 2804927 (1957-09-01), Hall
patent: 3150718 (1964-09-01), Crowe
patent: 3208788 (1965-09-01), Roark
patent: 3352593 (1967-11-01), Webb
patent: 3698756 (1972-10-01), Groves
Blunk Evon C.
Cherry Johnny D.
Kriegel Bernard
Vetco Offshore Industries, Inc.
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