METHOD AND SYSTEM FOR MONITORING FLUID FLOW IN A CONDUIT
First Claim
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1. A method for monitoring fluid flow in a conduit, the method comprising:
- acoustically coupling an optical fiber to the conduit adjacent to a flow restriction in the conduit;
inducing a Distributed Acoustic Sensing (DAS) assembly to measure an acoustic noise signature generated in the optical fiber by the fluid flowing through the flow restriction;
deriving the fluid flow rate of the fluid flowing through the flow restriction from the measured acoustic noise signature; and
displaying the derived fluid flow rate at a fluid flow rate monitoring display.
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Abstract
A method for monitoring fluid flow in a conduit comprises:
- acoustically coupling an optical fiber to the conduit adjacent one or more flow restrictions (R1-R4) in the conduit;
- inducing a Distributed Acoustic Sensing (DAS) assembly to measure an acoustic noise signature (SNR1-4) generated in the fiber by the fluid flowing through each flow restriction (R1-R4);
- deriving the fluid flow rate of the fluid (QI, QI+II) flowing through each flow restriction (R1-R4) from the measured acoustic noise signature (SNR1-4); and
- displaying the derived fluid flow rate (QI, QI+II) at a fluid flow rate monitoring display.
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Citations
15 Claims
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1. A method for monitoring fluid flow in a conduit, the method comprising:
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acoustically coupling an optical fiber to the conduit adjacent to a flow restriction in the conduit; inducing a Distributed Acoustic Sensing (DAS) assembly to measure an acoustic noise signature generated in the optical fiber by the fluid flowing through the flow restriction; deriving the fluid flow rate of the fluid flowing through the flow restriction from the measured acoustic noise signature; and displaying the derived fluid flow rate at a fluid flow rate monitoring display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for monitoring fluid flow in a conduit, the system comprising:
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an optical fiber which is acoustically coupled to an outer surface of the conduit adjacent to a flow restriction in the conduit; a Distributed Acoustic Sensing (DAS) assembly which is configured to measure an acoustic noise signature generated in the fiber by the fluid flowing through the flow restriction; and a fluid flow monitoring display for displaying the fluid flow rate of the fluid flowing through the flow restriction derived from the measured acoustic noise signature. - View Dependent Claims (12, 13, 14, 15)
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Specification