Method and apparatus for dual instrument installation in a wellbore
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United States of America Patent
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Nov 28, 2017
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app pub date -
Sep 16, 2014
filing date -
Sep 19, 2013
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Abstract
An apparatus for installing two sensing instruments and cables inside of a single tubing string in a wellbore for monitoring well conditions at two different locations includes an upper sensor attached to an inner sleeve seated at a first location in a ported outer sleeve in the tubing string. The upper sensor is allowed to be in pressure communication with the exterior of the tubing string at the first location. A second lower sensor is deployed on a pump down cup (PDC) assembly to a lower depth in the outer sleeve to allow fluid pressures to be monitored at a second location in the wellbore.
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