Abstract
Thermal-hydraulic calculations of technological modes of pumping play an important role in the selection of economically optimal and safe modes of oil transportation through main pipelines This is especially true for non-isothermal pipelines and abnormal oil of complex rheology. Urgent task is testing methods of improving of high-paraffinic and high viscosity oil rheological properties by physical-chemical influences. In this paper an attempt is made to apply software package Schlumberger PIPESIM to calculate the friction loss and temperature drop in non-isothermal main pipeline. As an example, the main pipeline Transneft-North Usa-Ukhta was chosen. It is shown that such a complex can be used to evaluate the thermal and hydraulic losses on the real line, although further investigation are required in order to achieve a satisfactory agreement between the calculated and actual data. In the paper the hydraulic friction losses and losses on the local resistance in the flow of oil through the tube laboratory bench are also calculated. This lab scale tubing installation was created in Ukhta State Technical University to investigate the influence of physical fields and chemical agents on the rheological properties of high-viscosity and high-paraffinic oils of Timan-Pechora oil-gas province. It is supposed to treat of oil pipe flow by ultrasound and magnetic fields, adding depressants, and by thermal heating.
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