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Title: System and method for damping vibration in a drill string using a magnetorheological damper

Abstract

A system for damping vibration in a drill string can include a magnetorheological fluid valve assembly having a supply of a magnetorheological 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 for inducing a magnetic field that alters the resistance of the magnetorheological fluid to flow between the first and second chambers, thereby increasing the damping provided by the valve. A remnant magnetic field is induced in one or more components of the magnetorheological fluid valve during operation that can be used to provide the magnetic field for operating the valve so as to eliminate the need to energize the coils during operation except temporarily when changing the amount of damping required, thereby eliminating the need for a turbine alternator power the magnetorheological fluid valve. A demagnetization cycle can be used to reduce the remnant magnetic fieldmore » when necessary.« less

Inventors:
 [1];  [2];  [3]
  1. Houston, TX
  2. Portland, CT
  3. East Islip, NY
Publication Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1035793
Patent Number(s):
8,087,476
Application Number:
12/398,983
Assignee:
APS Technology, Inc. (Wallingford, CT)
DOE Contract Number:  
FC26-02NT41664
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Wassell, Mark Ellsworth, Burgess, Daniel E, and Barbely, Jason R. System and method for damping vibration in a drill string using a magnetorheological damper. United States: N. p., 2012. Web.
Wassell, Mark Ellsworth, Burgess, Daniel E, & Barbely, Jason R. System and method for damping vibration in a drill string using a magnetorheological damper. United States.
Wassell, Mark Ellsworth, Burgess, Daniel E, and Barbely, Jason R. Tue . "System and method for damping vibration in a drill string using a magnetorheological damper". United States. https://www.osti.gov/servlets/purl/1035793.
@article{osti_1035793,
title = {System and method for damping vibration in a drill string using a magnetorheological damper},
author = {Wassell, Mark Ellsworth and Burgess, Daniel E and Barbely, Jason R},
abstractNote = {A system for damping vibration in a drill string can include a magnetorheological fluid valve assembly having a supply of a magnetorheological 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 for inducing a magnetic field that alters the resistance of the magnetorheological fluid to flow between the first and second chambers, thereby increasing the damping provided by the valve. A remnant magnetic field is induced in one or more components of the magnetorheological fluid valve during operation that can be used to provide the magnetic field for operating the valve so as to eliminate the need to energize the coils during operation except temporarily when changing the amount of damping required, thereby eliminating the need for a turbine alternator power the magnetorheological fluid valve. A demagnetization cycle can be used to reduce the remnant magnetic field when necessary.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {1}
}

Patent:

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