Downhole tool for determining flow velocity using measurements from a transducer and a plurality of electrodes
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United States of America Patent
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Mar 13, 2018
Issued Date -
N/A
app pub date -
Oct 30, 2012
filing date -
Oct 31, 2011
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Abstract
A downhole tool may include a tool housing extending along a longitudinal axis and having a circumference which is perpendicular to the longitudinal axis, the tool housing being adapted to be lowered into the inside of the borehole or borehole casing. The downhole tool may include a longitudinal transducer for transmitting a probing signal longitudinally from an end part of the tool housing into a fluid flowing in said borehole or borehole casing and for receiving a reflected signal reflected from reflective entrained surfaces in the fluid flowing along a longitudinal direction towards the end part of the tool housing. The downhole tool may include a plurality of electrodes arranged spaced apart around the longitudinal axis in the periphery of the downhole tool so that the fluid flows between the electrodes and a borehole wall or borehole casing wall.
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