Rock formation drill bit assembly with electrodes
US9976352B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2015 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Apr 18, 2036 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C37/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rock formation drill bit assembly with electrodes includes a drill bit including a hollow portion that extends along a longitudinal axis of the drill bit. The hollow portion extends from a first end to a second end opposing the first end. Cutters as positioned on the first end. The cutters are configured to cut the rock formation resulting in a rock core protruding from the rock formation into the hollow portion. The rock core includes a circumferential surface. Multiple electrodes are positioned within an inner circumferential surface of the hollow portion. The multiple electrodes are configured to apply electrical discharge across multiple locations on the circumferential surface of the rock core. The electrical discharge causes the rock core to fracture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.