Abstract
Background To ensure the required productivity in the operation of oilfield pipelines transporting gas/liquid mixtures, it is important to adequately predict pressure losses, including the cases of drag reducing additives usage that reduce the hydraulic resistance. Aims and Objectives Development of a mathematical model of pressure losses under the stratified and slug regimes of joint flow of oil and gas in hilly terrain oilfield pipelines. Metods The method is based on solving the equations of mass conservation and the amount of motion of the stratified and slug regimes of the gas-liquid flow in the pipeline using polymer additives that reduce both the turbulent friction of the liquid phase against the wall of the pipe and the interfacial gas/liquid friction. Results A mathematical model for calculating pressure losses in multiphase oilfield pipelines with stratified and slug flow regimes using polymer additives is developed. Conclusion The mathematical model is developed of gas-liquid flow in hilly terrain pipeline using drag reducing additives.
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