Expandable wirefinder and method for use of same
US6848507B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2002 |
| Grant date | Feb 1, 2005 |
| Priority date | — |
| Expiry date | Feb 27, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B31/125
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.