Cutting structure for roller cone drill bits
US6612384B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2000 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Jun 8, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
New cutting structures for roller cone drill bits. In one aspect, a drill bit includes a bit body, roller cones attached to the bit body and able to rotate with respect to the bit body, and a plurality of cutting elements disposed on each of the roller cones, such that axial force on the bit during drilling is substantially balanced between the cones. In another aspect, a drill bit includes a plurality of cutting elements disposed on each roller cone such that the amount of work performed by each cone during drilling is substantially the same as the amount of work performed by each of the other cones. In yet another aspect, a drill bit includes a plurality of cutting elements disposed on each roller cone such that distribution of axial force on the bit is optimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.