Mini-spinner flowmeter and downhole tool comprising an array of mini-spinner flowmeters for operation in hydrocarbon well
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United States of America Patent
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Sep 28, 2021
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N/A
app pub date -
Jun 4, 2019
filing date -
Jun 7, 2018
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Abstract
A mini-spinner flowmeter measures a fluid linear velocity and/or a fluid direction of a fluid present in a hydrocarbon well. It comprises an impeller formed with a plurality of axially extending vanes longitudinally secured to a shaft, the shaft extending along a longitudinal axis, the impeller being caused to rotate at an impeller angular velocity depending on the fluid linear velocity and in a rotational direction depending on the fluid direction; and a support having a bearing positioned on each end of the shaft and a through-hole securing an optical section. The vanes are reflective such that, in use, a light energy emitted by an emitting optical fiber and reflected backward by anyone of the vanes is received by a first receiving optical fiber and/or a second receiving optical fiber, the reflected light energy containing information indicative of the fluid linear velocity and/or the fluid direction.
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