Improvement of an engineering procedure for calculating the non­isothermal transportation of a gas­liquid mixture

Fyk, Мykhailo; Biletsky, Volodymyr; Fyk, Ilya; Bondarenko, Volodymyr; Al-Sultan, Mohammed Bassam

doi:10.15587/1729-4061.2019.167198

Cited by 5 publications

(10 citation statements)

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“…5 shows that when the relative density of gas in air from 0.5 to 0.75 and pressure from 7.5 to 15 MPa (step -2.5 MPa), the equilibrium temperature of hydrate formation in the gas well changes to 25 K. Therefore, to regulate the equilibrium temperature of hydration to 25-30 K, it's required a power according to (6)-( 8) of 320-360 kW. In addition, the constant introduction of geothermal energy into the rock, which has a high heat capacity, gradually heats it [31,32]. This reduces the risk of hydration over time.…”

Section: Research Results and Discussionmentioning

confidence: 99%

Geothermal heat use to eliminate hydrate formations in oil deposit injection wells

et al. 2021

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The article is devoted to an actual issue: the development of internal downhole heat exchangers technology to combat hydration in injection wells. Purpose: development of conceptual solutions for the use of geothermal coolant in the internal well heat exchanger of the injection well. A scheme of an internal downhole heat exchanger with a geothermal heat carrier has been developed, and includes a supply line of a geothermal carrier through the heat exchange surface of the injection well into the productive reservoir of the oil field. The scheme provides targeted utilization of thermobaric energy of a geothermal source to combat hydration in the injection well. A mathematical apparatus for describing the process of heat utilization and heat exchange in injection well is proposed. It is established that the capacity of one geothermal well discovered at the oil depths in the Dnipro-Donetsk basin is sufficient to eliminate hydration in 1-3 injection wells, and determines the feasibility of their joint work.

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Section: Research Results and Discussionmentioning

confidence: 99%

Geothermal heat use to eliminate hydrate formations in oil deposit injection wells

et al. 2021

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“…Аналіз основних досягнень і літератури. В роботі [1,2,3] відмічалось, що в умовах розробки газоконденсатних родовищ в режимі виснаження або часткового прояву водонапірного режиму, суттєву роль відіграють природні явища з підтримування пластового тиску або навпаки.…”

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Influence of Natural Factors of Supporting Reservoir Pressure at the Late Stage of Development of Gas Condensate Fields

Fyk,

Rymchuk

2024

CCTE

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The object of the research is natural factors that can affect both the maintenance of reservoir pressure in the process of developing gas condensate fields and the recovery of depleted deposits. Such factors include: waterflooding of deposits, subsidence of the surface, elasticity of rocks, water and gas, initial gradients of reservoir pressure in deposits, capillary forces. When studying the recovery of reserves in depleted gas condensate fields, it is necessary to take into account the influence of the above factors on the maintenance of reservoir pressure in order to identify the volumes of gas that flow from deep horizons (external sources). The paper shows the dynamics of waterflooding volumes and average reservoir pressures over the years. It is emphasized that waterflooding does not significantly affect the maintenance of reservoir pressure. Correlation dependencies of waterflooding volumes over time and the dependence of waterflooding volumes on reservoir pressure are given. An original system for calculating the volume of the water pressure system is proposed for the purpose of forecasting further waterflooding of deposits. The influences of all the above factors on the process of maintaining reservoir pressure are taken into account. It is shown that for the Shebelinsky GCF, all these factors do not significantly affect the recovery of reserves. The influence of capillary forces and evaporation of water in deposits on the development processes from the point of view of maintaining reservoir pressure at the late stage of GCF operation is studied.

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“…On the basis of the Pokrovska mine, there is a cogeneration modular plant for utilization of coalmine methane and a drilling module for drilling degassing wells from the surface. The system of degassing wells is used to ensure a safe coalmine methane concentration in stoping faces [51], [52].…”

Section: The Practice Of Integrated Use Of Mineral and Raw Materials ...mentioning

confidence: 99%

A new concept for complex mining of mineral raw material resources from DTEK coal mines based on sustainable development and ESG strategy

Bondarenko¹,

Salieiev²,

Kovalevska³

et al. 2023

Min. miner. depos.

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Purpose. The research purpose is to develop a concept for complex mining of mineral resources from coal mines using the example of PJSC DTEK Pavlohradvuhillia mines with a transition to multi-product production of clean drinking water, utilization of methane, secondary coal from rock dumps and sludge reservoirs, low-potential thermal energy of mine groundwaters and associated raw materials from desalination waste. Methods. The research uses an integrated approach, which includes an analysis of existing experience and available complex coal mining technologies, laboratory studies of mine water desalination technology by the reverse osmosis method with thermal distillation of concentrated brine, and chemical analysis using ElvaX laboratory equipment. Findings. This paper presents the research results of a comprehensive analysis of mineral raw material resources related to coal mining. The technically achievable energy potential that can be produced from the secondary coal of rock dumps and sludge reservoirs has been determined, which in total is 183.3 TJ. The annual heat potential of methane gas utilization has been estimated, which in total of PJSC DTEK Pavlohradvuhillia’s mines reaches 7.1 PJ. The possibility of extracting up to 1.12 TJ/year of associated thermal energy from the water-drainage installation of mine complexes has been determined. For the conditions of the Zakhidno-Donbaska mine, the authors of the paper have developed a technological scheme for the water preparation process by the reverse osmosis with the desalination brine treatment by the method of multistage evaporation on adiabatic evaporators. Originality. For the first time, the energy flows related to coal mining technology have been comprehensively analyzed for the possibility of their joint use to cover the needs of the mine complex. The prospects for complex mining of mineral resources have been assessed based on the adaptation of the mine complex production facilities to the multi-product production of clean drinking water, utilization of methane gas, low-potential thermal energy from mine groundwaters and secondary raw materials of desalination waste. Practical implications. The proposed set of technological solutions will ensure the sustainable development and diversification of the production of PJSC DTEK Pavlohradvuhillia coal-mining enterprises, as well as the effective transformation of coal-mining cities during the period of transition from mono-product production to the creation of multi-business production complexes that comply with ESG principles. The creation of multi-product mine complexes capable of producing not only coal, but also heat and associated mineral raw material resources, should become a guarantee of stable social-economic development of coal-mining regions.

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Improvement of an engineering procedure for calculating the nonisothermal transportation of a gasliquid mixture

Cited by 5 publications

References 14 publications

Geothermal heat use to eliminate hydrate formations in oil deposit injection wells

Geothermal heat use to eliminate hydrate formations in oil deposit injection wells

Influence of Natural Factors of Supporting Reservoir Pressure at the Late Stage of Development of Gas Condensate Fields

A new concept for complex mining of mineral raw material resources from DTEK coal mines based on sustainable development and ESG strategy

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Improvement of an engineering procedure for calculating the non­isothermal transportation of a gas­liquid mixture

Cited by 5 publications

References 14 publications

Geothermal heat use to eliminate hydrate formations in oil deposit injection wells

Geothermal heat use to eliminate hydrate formations in oil deposit injection wells

Influence of Natural Factors of Supporting Reservoir Pressure at the Late Stage of Development of Gas Condensate Fields

A new concept for complex mining of mineral raw material resources from DTEK coal mines based on sustainable development and ESG strategy

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Improvement of an engineering procedure for calculating the nonisothermal transportation of a gasliquid mixture