Multi-path combined high-low voltage plasma rock-breaking drill bit, drill bit apparatus and drilling method
US11085245B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2020 |
| Grant date | Aug 10, 2021 |
| Priority date | — |
| Expiry date | Jan 6, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B36/001
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present disclosure provides a multi-path combined high-low voltage plasma rock-breaking drill bit, drill bit apparatus and drilling method. The multi-path combined high-low voltage plasma rock-breaking drill bit comprises: a drill bit body, insulators, plasma generators, drilling fluid outlets, plasma integrated pipelines, a drilling fluid pipe; wherein a plurality of plasma generators are distributed on the same drill bit body; the axis of the plasma generator and the axis of the drill bit body form a certain included angle; each of the plasma generators is independently connected to the ground through its respective plasma integrated pipeline and operates independently; and drilling fluid flows out of the drilling fluid outlets, takes away the heat generated by the operation of the plasma generators, thereby cooling the plasma generators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.