METHOD AND SYSTEM FOR MONITORING FLUID FLOW IN A CONDUIT

摘要

A method for monitoring fluid flow in a conduit (5) comprises: - acoustically coupling an optical fiber (11) to the conduit (5) adjacent one or more flow restrictions (R1-R4) in the conduit; - inducing a Distributed Acoustic Sensing (DAS) assembly (12) to measure an acoustic noise signature (SNR1-4) generated in the fiber (11) 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.