During the operation of oil wells, one of the main types of complications is the formation of asphaltene-resin-paraffin deposits (ARPD), which leads to a drop in oil production, especially for periodically operating wells. This mode complicates the calculation of ARPD formation conditions by the fact that it becomes necessary to take into account the heating of the fluid flow from the electric centrifugal pump motor, taking into account its operating time, which affects the temperature distribution along the borehole. The authors consider a methodology for calculating the probability of ARPD precipitation in the conditions of non-constant operation of electric submersible pumps (ESP) in the mode of periodic short-term activation. Wells of the Vyngapurovskoye field, complicated by ARPD, were studied. When developing the methodology, algorithms for the distribution of pressure and temperature of the gas-liquid flow were used and the dependences of the temperature at which organic deposits are deposited on the walls of lifting pipes on the technological parameters of the well operation were determined. The temperature of the ARPD formation was obtained as a result of the analysis of data on the depth of deposits at 61 wells. The method takes into account the process of heating and cooling the fluid flow during operation and stopping the ESP in a short-term mode. As a result of the evaluation, the accuracy of the prediction of the probability of ARPD formation was 83% (testing was carried out on 6 wells). The approach proposed in the article makes it possible to determine the presence or absence of complications, including the depth of the onset of sediment deposition. The results of the work can be applied to the selection of the most effective mode of operation of pumping equipment and sediment control technology.
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