Cutting structures for casing component drillout and earth-boring drill bits including same
US7954571B2 · kind B2 · utility
6Cited by
118References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2008 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Jul 3, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B29/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill bit includes a bit body having a face on which two different types of cutters are disposed, the first type being cutting elements suitable for drilling at least one subterranean formation and the second type being at least one of an abrasive cutting structure and an abrasive cutting element suitable for drilling through a casing shoe, reamer shoe, casing bit, casing or liner string and cementing equipment or other components, as well as cement. Methods of forming earth-boring tools are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.