Rotary drill bit having moveable formation-engaging members
US6142250A · kind A · utility
122Cited by
18References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1998 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Apr 24, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/327
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Formation engaging elements are moveably mounted onto a drill bit. Such elements may be used to protect other rigidly mounted formation engaging elements from impacts that occur during use of the drill bit, or they may be used to alter the aggressiveness of the drill bit when used in directional drilling operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.