Auto-extending/retracting electrically isolated conductors in a segmented drill string
US7028779B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 16, 2004 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Dec 16, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R13/533
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system includes a drill string made up of a plurality of connectable pipe sections. An assembly is provided for use with each pipe section including contact arrangement for forming an isolated electrical connection between attached pipe sections at each end of each pipe section. An electrically conductive arrangement is located in the innermost passage of each pipe section and is in electrical communication with the contact arrangement to extend therebetween in a way which provides an electrically conductive path that is arranged against the inner wall of the innermost passage of each pipe section in cooperation with the contact arrangement to form an overall electrically isolated conductive path through the drill string. The electrically conductive arrangement resiliently biases the electrically conductive path against the inner wall, which path may take the form of a helix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.