Drill bit with an electrically isolated transmitter
US8130117B2 · kind B2 · utility
9Cited by
125References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2007 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Aug 9, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/013
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In one aspect of the invention a downhole drill bit with a body intermediate a shank and a working surface. Extending from the work surface is a wear resistant electric transmitter electrically isolated from the drill bit body. A wear resistant electrically conductive receiver, also electrically isolated from the bit body, may be connected to a tool string component. The working surface may also have at least two wear resistant electrodes located intermediate the transmitter and receiver that are adapted to measure an electric potential in the formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.