The invention relates to the technical field of oil and gas
field development, and discloses a horizontal well multiphase flow profile inversion method based on multisource data fusion, which comprises the following steps: S1, laying optical fibers and acquiring data; s2, data preprocessing; s3, obtaining empirical parameters and a multi-source
database; s4, judging a fluid scene and constructing a
solver model; s5, iterative solution and
phase fraction inversion are carried out, according to the empirical parameters and the multi-source
database, the
solver model constructed in the step S4 is adopted, solution is carried out in different
phase number scenes, and an inversion index result is obtained; and S6, visual output and abnormal flow detection are carried out, and the inversion index result obtained in the step S5 is visually presented in the
depth direction of the shaft and is used for assisting in judging abnormal phenomena. According to the method, the multiphase flow
thermodynamic model is constructed based on the state equation, the water-
liquid ratio and the gas-oil ratio are dynamically inverted through the iterative optimization
algorithm in combination with the DAS sound velocity data, and high-precision characterization of multiphase flow characteristics is achieved.