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Документ Specifying the Methods to Calculate Thermal Efficiency of a Dual Production Well System "Fluid-Geoheat"(2022) Fyk, M. I.; Biletskyi, V. S.; Abbood, M.; Desna, N. A.Methods to calculate thermal efficiency of dual production well system “fluid-geoheat” have been specified for conditionally thin productive fluid-saturated seam in terms of radial planar filtration. It has been demonstrated that relative to a variant, ignoring Joule-Thompson effect, and variant of discrete Joule–Thomson coefficient substitution, calculation accuracy as for the well heat efficiency increases by 33% and 9% respectively. It has been proved that it is expedient for a conditionally thin seam to use effective temperature within the heat-exchange equitation with Fourier substitution as related to heat transfer while considering heat input in terms of unidirectional input to a virtual disk plate from the seam floor. In the context of the proposed calculation methods, increase in numerical estimations of thermal efficiency of a well results from the consideration of extra heat pumping owing to Joule-Thompson effect by rocks adjoining the productive formation.Документ Resource evaluation of geothermal power plant under the conditions of carboniferous deposits usage in the Dnipro-Donetsk depression(2018) Fyk, M. I.; Biletskyi, V. S.; Abbud, M.The objective of the work is to substantiate the actualization of the problem of obtaining geothermal energy from oil and gas wells of oil and gas production facilities in the central-eastern part of the Dnieper-Donetsk Depression (DDD). The research methodology is based on the collection and statistical processing geophysical data of the DDD oil and gas deposits, the use of balance equations for energy and substance matter. The main result of the work is that the principal technological scheme of the geothermal system has been developed and the geothermal potential of oil and gas wells in the experimental zone has been analyzed. There have been considered the technological and ecological aspects of geothermal heat usage from depleted deposits of the DDD wells, which were disclosed into сarboniferous deposits productive horizons.Документ Improved thermogasodynamic model of a geothermal gas condensative deposit with production well(2019) Fyk, M. I.; Biletskyi, V. S.; Al-sultan, M. B.; Abbood, M. H.It is shown in the work that the wells-fluid are extracted from rocks by heat-retaining fluid from the open geothermal reservoir as from object with distributed cross-sectional parameters. This is due to the fact that the actual temperature distribution of the geothermal reservoir in dynamics affects the thermal properties of fluid-retaining rocks, which in turn affect the coefficient of heat exchange and heat transfer along the cross-section between the moving fluid, the fluid-retaining layer and adjacent rocks. The static temperature field of the original geothermal gradients in the case of outflow injection of the circulating coolant changes from the sides of the reservoir to the wellbore. A model of geothermal reservoir of gas-condensate well has been developed, which takes into account changes of thermal conductivity of rocks from the reservoir counture to the well bottom. The model includes refined equations of thermal energy balance for radial filtration of well production, containing convective and conductive components of heat exchange and heat flow. This allows, in comparison with the known methodological approaches, to clarify by 12-14% the forecast of heat extraction from a geothermal reservoir with a circulating coolant thrue the bottom and productive layer of a gas-condensate well.Документ Альтернативное схемно-технологическое решение интенсификации добычи геотермальных ресурсов нефтяных скважин(2017) Фык, Михаил Ильич; Аббуд, М. Х.Документ Analysis of Dynamical Heat Conductivity of the Reservoir and Fluid Evacuation Zone on the Gas Condensate Well Flow Rate(2020) Anzian, Kouadio Fabrice; Fyk, M. I.; Mohammed, Bassam Al-Sultan; Abbood, Mohammed Khaleel; Abdullatif, Haval Mohammed; Shapchenko, Ye. A.This study shows that the thermal conductivity of the rock borehole adjacent to the wells varies depending on the operation of the well. This is due to the fact that the actual temperature and temperature difference affect the humidity and other thermal properties of the rocks, which in turn affect the heat transfer coeffcient across the section between the moving gas and the rocks. The static temperature field of primitive geothermal gradients acquires changes in a dynamic form. Theoretical consideration of changes in the thermal conductivity of rocks near the face and the wells is proposed to improve the prediction of gas condensate wells production. The result is achieved by introducing the specified equations of the thermal energy balance in the radial filtration and lifting of well products, which contain the coeffcients of heat exchange and throttling. The refinement bias estimation of the 10%–15% level of gas condensate well extraction is shown using proposed methodological approach to relatively well-known (traditional in the field development practice) methods for estimating the extraction of a “medium well” from a particular oil and gas field evaluation. The results of this work demonstrate important scientific, applied, educational and methodological significance of using the methodology presented by the authors.Документ Сезонне використання тимчасово-незадіяних нафтогазопровідних ділянок магістральних трубопроводів в геотермальних регіональних системах(ТОВ "НВП "Інтерсервіс", 2019) Аббуд, М. Х.; Фик, Михайло ІллічАвторами роботи пропонується сезонне використання тимчасово-незадіяних магістральних ділянок для регіональних геотермальних систем, зроблено оцінку набутої теплової потужності, показано перспективу такого підходу в розбудові когнітивних технологій в регіонах з високими сезонними перепадами температурами. Акцентована увага на можливості тимчасового використання трубопроводів в якості геотермальних теплообмінників з вуглеводневим теплоносієм.