Single cone earth boring bit
US6119797A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1998 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Oct 15, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention discloses a single cone earth boring bit which is adapted to be used for boring in oil fields, mining and geological prospecting. The single cone earth boring bit is composed of a bit body (1), gauge blocks (2), active cutting gauge teeth (4), passive gauge teeth (3) and knobby cone (6) etc. On the knobby cone (6), there are inserted wear-resistant teeth intermittently or successively, so as to make the wear resistance of the bit cutting system to be matched with the service life of the bearing. At the same time, gauge blocks (2) are provided on the bit body which may be directly made on or welded to the bit body. On the gauge blocks (2), there are inserted common carbide or wear-resistant active cutting gauge teeth (4) and the passive gauge teeth (3) to enhance the gauge-protecting effect of the bit. Such a single cone earth boring bit can significantly increase the footage of the bit and reduce the cost for drilling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.