Abstract
Abstract The paper presents a model for predicting and analysing the behaviour of sucker rod pumping installations in the inclined wells. This model incorporates the dynamics of the curved sucker rod string, and the friction forces resulting from the contact of the rod with the tubing through a system of two partial differential equations. This system of equations is solved by the finite difference technique. The model predicts the polished rod and pump dynamometer cards and incorporates the effects of fluid inertia and viscosity. The model is capable of simulating a wide variety of pump conditons, and geometry of the rod string. The examples and comparisons with the results obtained using a program for vertical wells to analyse the deviated well are presented. The information predicted by the model is useful in the design and operation of sucker rod pumping installations.
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