Patent · US Active

System and method for damping vibration in a drill string

US8240401B2 · kind B2 · utility

9Cited by

39References

10Claims

0Family size

Assignee

APS Technology, LLC · US

Inventors

Mark Ellsworth Wassell · Houston, US
William Evans Turner · Durham, US
Daniel E. Burgess · Middletown, US
Carl Allison Perry · Middletown, US

Key dates

Filing date	Aug 9, 2011
Grant date	Aug 14, 2012
Priority date	—
Expiry date	Aug 9, 2031

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.