The invention discloses an
oil well working condition intelligent diagnosis and
analysis method and device based on an SVM model. The invention belongs to the technical field of
oil field oil extraction processes, and provides an SVM model-based
oil well working condition intelligent diagnosis and
analysis method, which comprises the steps of 1, obtaining multiple groups of normal indicator diagrams of an
oil well, extracting HOG features of the multiple groups of normal indicator diagrams, and gathering the HOG features of the normal indicator diagrams into a normal HOG
feature set; under thecondition that the working conditions of the oil well are complicated and changeable caused by different oil reservoirs and different well bore structures and
physical property differences, a set ofuniversal high-accuracy
indicator diagram identification method is provided; the problem that matrix features of a matrix
feature recognition method do not describe subtle changes of an
indicator diagram sufficiently is solved, slight sand production, upward collision and downward hanging can be recognized accurately, the problem that features useful for diagnosis are removed in the actual application process of a differential curve method is solved, the number of diagnosis types is large, and quantitative evaluation can be achieved. Compared with a PSO-RBF neural network
algorithm, the methodis more accurate in recognition under complex working conditions.