Method and system for controlling the rotary speed stability of a drill bit
US5507353A · kind A · utility
20Cited by
9References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 7, 1994 |
| Grant date | Apr 16, 1996 |
| Priority date | — |
| Expiry date | Dec 7, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B44/005
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method and a system suited for controlling the behavior of a drill bit includes an additional resistant torque added to the torque about the drill bit so that the overall torque about the drill bit is an increasing function of the rotary speed of the bit. The system includes control means suited for creating an additional resistant torque about the bit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.