Stochastic bit noise control
US8066085B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2008 |
| Grant date | Nov 29, 2011 |
| Priority date | — |
| Expiry date | Jun 26, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B44/005
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A drill bit direction system and method is disclosed that modifies or biases the stochastic movement of the drill bit and/or stochastic interactions between the drill bit and an inner-wall of a borehole being drilled by a drilling system to change the direction of drilling of the drilling system. The direction of the drill bit is monitored to determine if the direction happens to align in some way with a preferred direction. If the direction isn't close enough to a preferred direction, a biasing mechanism modifies the stochastic movement in an attempt to modify the direction closer to the preferred direction. Any of a number of biasing mechanisms can be used. Some embodiments can resort to conventional steering mechanisms to supplement the biasing mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.