Electrical system and method for selective control of downhole devices
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United States of America Patent
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May 14, 2019
Grant Date -
Jan 18, 2018
app pub date -
Dec 28, 2015
filing date -
Dec 28, 2015
priority date (Note) -
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Abstract
A method of actuating a selected electrically powered device such as a solenoid operated valve (SOV) among a plurality of electrically powered devices coupled between a first conductor and second conductor includes applying a high voltage differential between the first conductor and the second conductor, the high voltage being at least as high as the breakover voltage of a switching thyristor coupled to the selected electrically powered devices. The method also includes applying a low voltage differential between the first conductor and the second conductor after applying the high voltage, the low voltage being lower than the breakover voltage of any switching thyristor coupled to the plurality of electrically powered devices.
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