Magnetic switch and uses thereof in wellbores
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United States of America Patent
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Sep 26, 2017
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Apr 16, 2014
filing date -
Apr 16, 2014
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Abstract
In one aspect, an apparatus for use in a wellbore is disclosed that in one non-limiting embodiment includes a string for placement in the wellbore and a switch on an outside of the string, wherein the switch includes a plurality of magnetic elements that provide a continuous electrical when the plurality of magnetic elements are aligned by an externally applied magnetic field. In one embodiment, the switch includes a channel that houses the plurality of magnetic elements that remain unaligned until the magnetic elements are aligned by the externally applied magnetic field.
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