Valve and position control using magnetorheological fluids

Details Valve and position control using magnetorheological fluids Valve and position control using magnetorheological fluids

2002-03-01

2008-09-30

Gay, Jennifer H (Department: 3676)

Wells

With electrical means

Magnetic

C251S129060

Reexamination Certificate

active

07428922

ABSTRACT:
Magnetorheological fluids, which solidify in response to a magnetic field, offer the ability to simplify many of the valves and control systems used downhole in the search for and production of oil and gas. They lessen the need for moving parts, provide solid-state valves, and can provide a differential movement of fluid through the valves by varying the strength of the magnetic field. Combinations of permanent and electro-magnets can improve safety by providing valves that fail, when power is lost, in either an open or closed position, depending on design. A number of examples are given.

REFERENCES:
patent: 2661596 (1953-12-01), Winslow
patent: 4718494 (1988-01-01), Meek
patent: 4785300 (1988-11-01), Chin et al.
patent: 5012740 (1991-05-01), Hardt
patent: 5040155 (1991-08-01), Feld
patent: 5048611 (1991-09-01), Cochran
patent: 5073877 (1991-12-01), Jeter
patent: 5115415 (1992-05-01), Mumby et al.
patent: 5158109 (1992-10-01), Hare, Sr.
patent: 5168931 (1992-12-01), Caskey et al.
patent: 5223665 (1993-06-01), Burleson
patent: 5284330 (1994-02-01), Carlson et al.
patent: 5586084 (1996-12-01), Barron et al.
patent: 5598908 (1997-02-01), York et al.
patent: 5636178 (1997-06-01), Ritter
patent: 5787052 (1998-07-01), Gardner et al.
patent: 6019201 (2000-02-01), Gordaninejad et al.
patent: 6036226 (2000-03-01), Brown et al.
patent: 6145595 (2000-11-01), Burris, II
patent: 6219301 (2001-04-01), Moriarty
patent: 6257356 (2001-07-01), Wassell
patent: 6280658 (2001-08-01), Atarashi et al.
patent: 6421298 (2002-07-01), Beattie et al.
patent: 6469367 (2002-10-01), Kondo et al.
patent: 6514001 (2003-02-01), Yezersky et al.
patent: 6568470 (2003-05-01), Goodson
patent: 6619388 (2003-09-01), Dietz
patent: 6926089 (2005-08-01), Goodson, Jr. et al.
patent: 2003/0019622 (2003-01-01), Goodson, Jr. et al.
patent: 2003/0037921 (2003-02-01), Goodson, Jr.
patent: 1236862 (2002-09-01), None
patent: 2039567 (1980-08-01), None
patent: 2396178 (2004-06-01), None
Examination Report for UK application No. GB0303599.5.
Official Action for Norwegian application No. 20030685.
British Search Report issued for GB Patent Application No. 0604850.8 on Jul. 10, 2006 (5 pages).

Affiliated with

Also associated with

Rating

Valve and position control using magnetorheological fluids does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Valve and position control using magnetorheological fluids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve and position control using magnetorheological fluids will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3967743