Cutting elements and rotary drill bits including same
US7243745B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2004 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Sep 30, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/5735
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A cutting element for a rotary drill bit that has a superabrasive member joined to a substrate at a three-dimensional interface is disclosed. The interface of the cutting element preferably incorporates a first ring pattern comprising a plurality of circumferentially arranged raised sections which are separated by a plurality of radially extending grooves. Also, the interface configuration may include at least a second ring pattern comprising a plurality of circumferentially arranged raised sections which are separated by a plurality of radially extending grooves. Radially adjacent ring patterns may substantially circumferentially overlap with one another. An interface of a cutting element including at least one ring pattern having an odd number of sections is also disclosed. Further, rotary drill bits including at least one such cutting element are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.