Cutting element having enhanced cutting geometry
US7540340B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2006 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Jun 1, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/5676
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill bit having a bit body, at least one roller cone attached to the bit body and able to rotate with respect to the bit body, and a plurality of cutting elements disposed on the at least one roller cone is disclosed. At least one of the plurality of cutting elements includes a first area defining a trailing edge, a second area proximate the first area defining a main wear surface, and a third area proximate the second area and defining a leading edge relief zone. Further, an insert for a drill bit having a contact portion adapted to contact an earth formation, the contact portion including a first area defining a relieved trailing edge, a second area defining a main wear surface, and a third area proximate the second area and defining a leading edge relief zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.