System and method for damping vibration in a drill string
US7219752B2 · kind B2 · utility
69Cited by
26References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2004 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Nov 8, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F2224/045
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system for damping vibration in a drill string can include a valve assembly having a supply of a fluid, a first member, and a second member capable of moving in relation to first member in response to vibration of the drill bit. The first and second members define a first and a second chamber for holding the fluid. Fluid can flow between the first and second chambers in response to the movement of the second member in relation to the first member. The valve assembly can also include a coil or a valve for varying a resistance of the fluid to flow between the first and second chambers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.