Expandable wirefinder and method for use of same

Details Expandable wirefinder and method for use of same Expandable wirefinder and method for use of same

2005-02-01

2005-02-01

Neuder, William (Department: 3672)

Wells

Processes

Freeing stuck object, grappling or fishing in well

C166S098000, C294S086110

Reexamination Certificate

active

06848507

ABSTRACT:
An expandable wirefinder (60) for locating a wire downhole comprises a sleeve (62) and a dual collet assembly (72). The dual collet assembly (72) has first and second collet members (78, 82) each having plurality of collet fingers (80, 84). The dual collet assembly (72) is slidable relative to the sleeve (62) to operate between running and finding positions. In the running position, the first collet member (78) is partially disposed within the sleeve (62) with its collet fingers (80) inwardly radially biased by the sleeve (62) and the second collet member (82) is disposed within the first collet member (78) with its collet fingers inwardly (84) radially biased by the sleeve (62). In the finding position, the collet fingers (80) of the first collet member (78) radially expand to form gaps therebetween and the collet fingers (84) of the second collet member (82) radially expand into the gaps.

REFERENCES:
patent: 6622789 (2003-09-01), Braddick
Standard Wireline Tools Catalog Parts 1-8; B.D. Kendle, Engineering Limited, www.bdkendle.co.uk.Online Product Catalog; Wireline Engineering Ltd., www.wireline-eng.co.uk.

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