Minimally intrusive monitoring of a multiphase process flow using a tracer and a spatially arranged array of at least two sensors on a flow pipe
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United States of America Patent
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Jun 2, 2015
Grant Date -
Dec 15, 2011
app pub date -
Jun 15, 2011
filing date -
Jun 15, 2010
priority date (Note) -
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Abstract
An apparatus for and a method of monitoring multiphase fluid flow passing within a pipe is provided. The method includes the steps of: a) providing a flow pressure value and a flow temperature value for the multiphase fluid flow within the pipe; b) sensing the fluid flow with a fluid flow meter operable to be attached to an exterior of the pipe, the flowmeter including a spatial array of at least two sensors disposed at different axial positions along the pipe, and producing flow velocity signals indicative of a velocity of the fluid flow traveling within the pipe; c) selectively injecting at least one tracer into the fluid flow passing within the pipe, at a known injection flow rate and concentration; d) sensing a sample of the fluid flow for the tracer, and producing tracer concentration signals indicative of the concentration of the tracer in the fluid flow; and e) determining one or more of a gas component flow rate, an oil component flow rate, and a water component flow rate, using one or more of the flow pressure value, the flow temperature value, the flow velocity signals, and the tracer concentration signals.
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