Method for identifying vertical well flow patterns based on conducting probe

The invention relates to a method for identifying vertical well flow patterns based on a conducting probe. The method can be used for conducting flow pattern identification on a vertical well section of an oil-water two-phase production well. The method is characterized by comprising the following steps that a training sample and a test sample are obtained through a dynamic experimental device, multi-angle characteristic extraction is conducted on an output signal of the conducting probe, and a characteristic vector is created through a plurality of extracted scalar characteristics; compression dimensionality reduction is conducted on the characteristic vector according to a principal component analysis method and the linear dependence among characteristic parameters is eliminated; according to various flow patterns of the vertical well, a multi-class flow pattern classifier is created according to a support vector machine classification method; a kernel function of a support vector machine is selected and a penalty factor and a kernel function parameter are optimized through the test sample. The method has the advantages that online identification can be conducted on the flow patterns of the oil-water two-phase vertical well, the flow pattern identification accuracy is high, and the requirement for underground measurement can be satisfied.