Patent ID: 9322233
Filing Date: 2016-04-26
CPC Classification: E21B

Claim Text:
1. A magnetic system configured to operate a downhole activatable member, the magnetic system comprising: a first magnetic field source having a first field with a first axial orientation; a second magnetic field source having a second field with an axial orientation different from the first orientation and separated from the first magnetic field source, the second field being magnetically repulsed by the first field; and, further including at least one of a biasing device and a third magnetic field source magnetically attracted to the second magnetic field source; wherein, when the magnetic system includes a third magnetic field source, movement of the first magnetic field source moves the second magnetic field source towards the third magnetic field source, and wherein, when the magnetic system includes the biasing device, the second magnetic field source rests upon the biasing device; and, a first housing within a tubular enclosing an inner annulus, an axially movable member and the first magnetic field source enclosed within the first housing, and the second magnetic field source separated from the first magnetic field source by an enclosure interface of the first housing.