The assessment of fiber optic sensing for the identification of three phase flow regimes in Pipelines (multi-phase flow metering)

Fiber Optics is an up growing modern technique widely utilized in the oil field. Multiphase flow metering in pipelines represents an essential objective for Distributed Fiber Optic Sensing (DFOS) techniques. The objective of the work is the explanation of Distributed Acoustic Sensing (DAS) mechanism in multiphase flow metering with proposing an experimental set up for the mentioned target. Principle of operation of Fiber Optics is explained with the methodology of sensing procedure of each type. Literature survey for previous attempts on this topic is provided. A parametric sensitivity study on the phase fraction obtained from DAS speed of sound measurement is performed to understand physical parameters effect on its behaviour. Proposed experimental multiphase flow loop for Texas A and M University at Qatar laboratory through a horizontal pipe with ability to incline for 15˚ based on DAS is presented.