Cutter with polycrystalline diamond layer and conic section profile
US6068071A · kind A · utility
74Cited by
47References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 20, 1997 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Feb 20, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/5735
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Polycrystalline diamond cutter (PDC) designs which substantially improve the penetration rate of fixed cutter drill bits while simultaneously reducing the wear on the bit during drilling operations are disclosed. The designs are based upon the observation that: 1) the wear pattern of a PDC is roughly a conic section and is parallel to bit rotation, and 2) the cutting surface is perpendicular to the rotation of the bit. The inventive PDC designs provide cutting action both perpendicular and parallel to the direction of bit rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.