Earth boring bits with nanocrystalline diamond enhanced elements
US5954147A · kind A · utility
187Cited by
14References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1997 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Jul 9, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/5673
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An earth boring bit is shown of the type used to drill subterranean formations. The bit body has an upper extent which is threaded for connection in a drill string extending to the earth's surface. A lower extent of the bit body has a number of cutting elements mounted thereon which engage an earthen formation and cut the formation. At least selected ones of the cutting elements incorporate a nanocrystalline diamond material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.