Development of methods to increase the efficiency of the fields with a high content of the hydrocarbon condensate is one of the most important scientific and applied problems. Solving this problem requires the development of mathematical modeling methods that realistically describe the flow processes of a gas-condensate mixture in a porous medium under various conditions, as well as verification of the developed models by comparing the numerical results obtained with experimental measurements. In the present work, in the framework of the well-known approach based on the classical Darcy law and conservation laws, traditionally used to simulate the flowing of two-phase multicomponent mixtures through a porous medium, a modified model is formulated for calculating the physical characteristics of the extraction process of a multicomponent hydrocarbon gas-condensate mixture. Computational experiments showed that the proposed approach provides adequate agreement with the experimental data obtained in LLC «VNIIGAZ» (Ukhta) on a laboratory model of the reservoir with simulated natural depletion of the field in the case of a nine-component hydrocarbon mixture at two temperatures: 25 °C and 60 °C. In the paper, the mathematical model is described and the results of computational experiments in comparison with the experimental data on a laboratory setup are discussed.

Volokhova Alina Viktorovna, Junior researcher LIT JINR. 141980, Moscow region, Dubna, Joliot-Curie street, 6. E-mail: volokhova@jinr.ru.

Zemlyanaya Elena Valerievna, senior researcher, doctor of physics and mathematics, leading researcher LIT JINR. 141980, Moscow region, Dubna, Joliot-Curie street, 6. E-mail: elena@jinr.ru.

Kachalov Viktor Vladimirovich, candidate of technical Sciences, senior researcher of the United Institute for high temperatures, Russian Academy of Sciences. 125412, Moscow, Izhorskaya street, 13, p. 2. E-mail: ongk@mail.ru.

Rikhvitskiy Victor Sergeevich, leading programmer LIT JINR. 141980, Moscow region, Dubna, Joliot-Curie street, 6. E-mail: rqvtsk@jinr.ru.

Sokotuschenko Vadim Nikolaevich, candidate of technical Sciences, associate Professor State University of Dubna. 141980, Moscow region, Dubna, Universitetskaya street, 19. E-mail: sokotushenko@mail.ru.

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