Pulsed electric rock drilling apparatus with non-rotating bit
US8172006B2 · kind B2 · utility
22Cited by
36References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 26, 2008 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Feb 7, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/15
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention provides for pulsed powered drilling apparatuses and methods. A drilling apparatus is provided comprising a bit having one or more sets of electrodes through which a pulsed voltage is passed through a mineral substrate to create a crushing or drilling action. The electrocrushing drilling process may have, but does not require, rotation of the bit. The electrocrushing drilling process is capable of excavating the hole out beyond the edges of the bit with or without the need of mechanical teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.