Erosion resistant subterranean drill bits having infiltrated metal matrix bodies
US8016057B2 · kind B2 · utility
4Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2009 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Apr 13, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2005/002
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Subterranean drill bits having good erosion resistance, strength, toughness, and thermal stability are disclosed. The drill bits comprise a bit body carrying at least one cutting element and having an infiltrated metal matrix. The infiltrated metal matrix comprises a matrix powder composition bound together by an infiltrant. The matrix powder mixture includes cast tungsten carbide powder having a particle size of −30 (600 micron) +140 mesh (106 micron), a second component powder consisting of one or more other types of tungsten carbide particles, and a metal powder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.