System and method for damping vibration in a drill string

Patent · Tue May 27 00:00:00 EDT 2008

OSTI ID:981834

Wassell, Mark Ellsworth ^[1]; Turner, William Evans ^[2]; Burgess, Daniel E ^[3]; Perry, Carl Allison ^[3]

---

1. Kingwood, TX
2. Durham, CT
3. Middletown, CT

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.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FC26-02NT41664
• Assignee: APS Technology, Inc. (Wallingford, CT)
• Patent Number(s): 7,377,339
• Application Number: 11/737,400
• OSTI ID: 981834
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING