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Controllable magneto-rheological fluid-based dampers for drilling

United States Patent

May 2, 2006
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
A damping apparatus and method for a drillstring comprising a bit comprising providing to the drillstring a damping mechanism comprising magnetorheological fluid and generating an electromagnetic field affecting the magnetorheological fluid in response to changing ambient conditions encountered by the bit.
Raymond; David W. (Edgewood, NM), Elsayed; Mostafa Ahmed (Youngsville, LA)
Sandia Corporation (Albuquerque, NM)
10/ 465,505
June 18, 2003
GOVERNMENT RIGHTS The Government has rights to this invention pursuant to Contract No. DE-AC04-94AL85000 awarded by the U.S. Department of Energy.