A downhole valve apparatus including a force transmitter configured to move in an axial direction and a valve actuator configured to move in an axial direction. The valve actuator is independently movable relative to the force transmitter and physically isolated from the force transmitter. A first magnetic assembly is disposed at the force transmitter. A second magnetic assembly is disposed at the valve actuator. The first and second magnetic assemblies are configured to repel one another and cause the force transmitter to move the valve actuator when th...
1. An apparatus for operating a downhole valve comprising: a force transmitter configured to move in an axial direction and including at least one first magnetic assembly;a housing including at least one axially elongated passageway formed therein, each at least one axially elongated passageway non-concentrically arranged with respect to the housing, the at least one first magnetic assembly configured to be disposed within the at least one axially elongated passageway; anda valve actuator configured to move in an axial direction and including at least on...
이 특허에 인용된 특허 (19)
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- Walkow Arnold M. ; Gold Randy ; Alexy ; Jr. Albert A. ; Dupree Wade D. ; Rafie Saeed. Magnetic motion coupling for well logging instruments. USP1999065917774.
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- Shen,Kuei Hsien. Oil pumping unit using an electrical submersible pump driven by a circular linear synchronous three-phase motor with rare earth permanent magnet. USP2008017316270.
- Beauquin Jean-Louis (Saint Faust FRX). Oil-well installation fitted with a bottom-well electric pump. USP1997045620048.
- Montgomery,Neil. Pump jack and method of use. USP2008057373971.
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- Hoppie Lyle O.. System and method for regenerative electromagnetic engine valve actuation. USP2000036039014.
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이 특허를 인용한 특허 피인용횟수: 3
- Wilson, Kenneth. Downhole activation system using magnets and method thereof. USP2014108860417.
- Lake, Gary; May, Michael J.; Ranjan, Priyesh; Murray, Douglas; Rainone, Michael; Sackett, Samuel; Presley, Talbot. Permanent magnet linear motor actuated safety valve and method. USP2014038662187.
- Lake, Gary B.; Burris, John E.; Anderson, David Z.; Peoples, Brock A.; McDaniel, Robert G.; Tompkins, Charles M.; Thompson, Grant R.. Subsurface safety valve and method of actuation. USP2013038393386.