DOWNHOLE APPARATUS, SYSTEM AND METHOD
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United States of America Patent
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Issued Date -
Feb 18, 2016
app pub date -
Jul 9, 2014
filing date -
Jul 11, 2013
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Abstract
An example apparatus for generating downhole fluid pressure pulses includes a tubular housing defining an internal fluid flow passage and providing a housing wall having an internal surface and an external surface. The apparatus also includes a device for selectively generating a fluid pressure pulse, the device being mounted in an aperture defined in the housing wall and being movable between a retracted position, where the device is seated within the aperture, and a radially extended position, where the device extends at least partially beyond the external surface.
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