Earth-boring tools including an impact material and methods of drilling through casing
US8479846B2 · kind B2 · utility
0Cited by
10References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2009 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | Jun 4, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/43
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Earth-boring tools comprise a face and a plurality of cutting elements disposed on at least a portion of the face. An impact material is positioned on at least one portion of a body and has a relative exposure equal to or greater than at least some of the cutting elements of the plurality of cutting elements. The impact material comprises a material having a lower abrasion resistance than the body. Methods of making and methods of using such earth-boring tools.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.