Monitoring flow conditions downwell
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United States of America Patent
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Oct 24, 2017
Grant Date -
Jan 15, 2015
app pub date -
Feb 25, 2013
filing date -
Mar 5, 2012
priority date (Note) -
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Abstract
This application describes methods and apparatus for monitoring flow at a given location downwell. The method of comprises performing fiber optic sensing on an optical fiber 204 deployed within the well 101. The optical fiber is attached to first tubing (201) that extends into the well to at least a first location (110a-c) at which it is wished to monitor inflow. The first tubing comprises at least one aperture (202a-c) having known properties at said first location. The first tubing is in fluid communication with flow tubing (107) that provides flow to/from the top (108) of the well. In use fluid therefore flows into the first tubing via the apertures (202a-c) which, having known properties, provide a calibrated response that can be detected by a fiber optic sensor unit (205).
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