Pub Date : 2023-08-31DOI: 10.18799/24131830/2023/8/4239
K. Maltsev, A. Gil, Nikita V. Abramov, Stanislav A. Puzyrev
Link for citation: Maltsev K.I., Gil A.V., Abramov N.V., Puzyrev S.A. Thermophysical and environmental assessment of natural gas utilization in the reconstruction of a pulverized coal-fired boiler. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 30-38 In Rus. The relevance of the investigation is caused by the need to assess the completeness of fuel combustion, harmful emissions, and temperature stress of the screen surfaces of a pulverized coal-fired boiler during its reconstruction for natural gas combustion. Currently, the conversion of solid fuel combustion installations to natural gas is highly relevant due to significantly lower emissions of carbon compounds. The main aim of this research is to study the physicochemical processes in the combustion chamber at various loads with flammable natural gas combustion and evaluate the effectiveness of combustion organization during the reconstruction of a pulverized coal-fired boiler. Objects: combustion chamber of a boiler unit with a steam capacity of 210 t/h, burners, parameters of the combustion chamber environment Methods: comparison of results obtained from analytical thermal calculations and numerical modeling. The numerical simulation of gas flare combustion was performed using the ANSYS Fluent software package. Reynolds Averaged Navier–Stokes approaches based on averaging the Navier–Stokes equations over the Reynolds number with additional equations for the turbulent kinetic energy k and the rate of turbulent kinetic energy dissipation ε were applied to describe the turbulent flow. Results. A numerical study of the physicochemical processes in the combustion chamber of a boiler unit was conducted after its reconstruction for natural gas combustion. Dependencies of temperature level changes, hydrodynamics, and concentrations of combustion products components in the volume of the combustion chamber at various loads were obtained. It was found that high-temperature combustion products are redistributed towards the front and rear walls, resulting in the formation of zones in the wall layer with a significant temperature gradient. The nozzles of the tertiary air contribute to the reduction of nitrogen oxide emissions in the combustion chamber by suppressing their formation due to oxygen deficiency in the combustion zone, as well as by lowering the temperature of the flame in the oxidizing zone.
{"title":"THERMOPHYSICAL AND ENVIRONMENTAL ASSESSMENT OF NATURAL GAS UTILIZATION IN THE RECONSTRUCTION OF A PULVERIZED COAL-FIRED BOILER","authors":"K. Maltsev, A. Gil, Nikita V. Abramov, Stanislav A. Puzyrev","doi":"10.18799/24131830/2023/8/4239","DOIUrl":"https://doi.org/10.18799/24131830/2023/8/4239","url":null,"abstract":"Link for citation: Maltsev K.I., Gil A.V., Abramov N.V., Puzyrev S.A. Thermophysical and environmental assessment of natural gas utilization in the reconstruction of a pulverized coal-fired boiler. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 30-38 In Rus.\u0000The relevance of the investigation is caused by the need to assess the completeness of fuel combustion, harmful emissions, and temperature stress of the screen surfaces of a pulverized coal-fired boiler during its reconstruction for natural gas combustion. Currently, the conversion of solid fuel combustion installations to natural gas is highly relevant due to significantly lower emissions of carbon compounds. The main aim of this research is to study the physicochemical processes in the combustion chamber at various loads with flammable natural gas combustion and evaluate the effectiveness of combustion organization during the reconstruction of a pulverized coal-fired boiler. Objects: combustion chamber of a boiler unit with a steam capacity of 210 t/h, burners, parameters of the combustion chamber environment Methods: comparison of results obtained from analytical thermal calculations and numerical modeling. The numerical simulation of gas flare combustion was performed using the ANSYS Fluent software package. Reynolds Averaged Navier–Stokes approaches based on averaging the Navier–Stokes equations over the Reynolds number with additional equations for the turbulent kinetic energy k and the rate of turbulent kinetic energy dissipation ε were applied to describe the turbulent flow. Results. A numerical study of the physicochemical processes in the combustion chamber of a boiler unit was conducted after its reconstruction for natural gas combustion. Dependencies of temperature level changes, hydrodynamics, and concentrations of combustion products components in the volume of the combustion chamber at various loads were obtained. It was found that high-temperature combustion products are redistributed towards the front and rear walls, resulting in the formation of zones in the wall layer with a significant temperature gradient. The nozzles of the tertiary air contribute to the reduction of nitrogen oxide emissions in the combustion chamber by suppressing their formation due to oxygen deficiency in the combustion zone, as well as by lowering the temperature of the flame in the oxidizing zone.","PeriodicalId":51816,"journal":{"name":"Bulletin of the Tomsk Polytechnic University-Geo Assets Engineering","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86272223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-31DOI: 10.18799/24131830/2023/8/3972
A. Zakharchenko, O. Pasko, A. A. Tigeev
Link for citation: Zakharchenko A.V., Pasko O.A., Tigeev A.A. Formation of the composition of trace elements of snow dust in Tyumen and Tobolsk using hierarchical cluster analysis. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 110-120. In Rus. The relevance: search for new methodological approaches and techniques for assessing the aerosol migration of substances and characterizing air pollution. The purpose of the work is a comparative analysis of clusters of the content of microelements of the solid phase of snow in the closely located cities of Tyumen and Tobolsk with respect to clean background and areas subject to technogenic impact. The materials: the trace elements of solid phase of the snow cover. The methods: chemical-analytical for determining the content of trace elements, hierarchical cluster in the analysis of geochemical spectra, probabilistic-statistical. Results. The background dust load in Tobolsk is less, and the inner city load is higher compared to Tyumen. A cluster data structure of 8 clusters has been established with the allocation of two large groups that combine the Tobolsk and Tyumen sites, which are divided into clusters with low and high content of trace elements. Conclusions. The conditionally background cluster C6 is present in Tobolsk (22,6 %) and Tyumen (11,7 %), and C5 – 13 % in Tobolsk and 8 % in Tyumen. A specific Tobolsk cluster C8 with a predominance of scattered elements (48 %) was found at 2 sites in Tyumen, which may indicate a possible transfer of aerosols between these cities. Some technogenic clusters contained heavy metals, while others were dominated by Sc, Cr, Ni, Zn, and Cd. Technogenic clusters (C7, C1) differ in the shape of the geochemical spectrum: heavy metals predominate in some, trace elements (C8) predominate in others; the same applies to conditionally background samples. The specific technogenic Tyumen cluster C4 is distinguished by high values of Cu and Mo. Conditionally isolated background clusters had a low content of microelements. To identify environmental conditions, we moved from the standardized values of cluster analysis to their material content. It is shown that some clusters contain heavy metals, while others contain Sc, Cr, Ni, Zn, and Cd. Conditionally isolated background clusters had a low content of microelements. Using the content of microelements of the C5 cluster as a background, the environmental index of pollution Zc was calculated, which in Tobolsk reaches a high and dangerous level of pollution 60,8–83,7, in Tyumen – an average, moderately dangerous level Zc (32–64). The use of cluster analysis makes it possible to determine the trace elements pollution of snow dust and the territory as a whole.
{"title":"FORMATION OF THE COMPOSITION OF TRACE ELEMENTS OF SNOW DUST IN TYUMEN AND TOBOLSK USING HIERARCHICAL CLUSTER ANALYSIS","authors":"A. Zakharchenko, O. Pasko, A. A. Tigeev","doi":"10.18799/24131830/2023/8/3972","DOIUrl":"https://doi.org/10.18799/24131830/2023/8/3972","url":null,"abstract":"Link for citation: Zakharchenko A.V., Pasko O.A., Tigeev A.A. Formation of the composition of trace elements of snow dust in Tyumen and Tobolsk using hierarchical cluster analysis. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 110-120. In Rus.\u0000The relevance: search for new methodological approaches and techniques for assessing the aerosol migration of substances and characterizing air pollution. The purpose of the work is a comparative analysis of clusters of the content of microelements of the solid phase of snow in the closely located cities of Tyumen and Tobolsk with respect to clean background and areas subject to technogenic impact. The materials: the trace elements of solid phase of the snow cover. The methods: chemical-analytical for determining the content of trace elements, hierarchical cluster in the analysis of geochemical spectra, probabilistic-statistical. Results. The background dust load in Tobolsk is less, and the inner city load is higher compared to Tyumen. A cluster data structure of 8 clusters has been established with the allocation of two large groups that combine the Tobolsk and Tyumen sites, which are divided into clusters with low and high content of trace elements. Conclusions. The conditionally background cluster C6 is present in Tobolsk (22,6 %) and Tyumen (11,7 %), and C5 – 13 % in Tobolsk and 8 % in Tyumen. A specific Tobolsk cluster C8 with a predominance of scattered elements (48 %) was found at 2 sites in Tyumen, which may indicate a possible transfer of aerosols between these cities. Some technogenic clusters contained heavy metals, while others were dominated by Sc, Cr, Ni, Zn, and Cd. Technogenic clusters (C7, C1) differ in the shape of the geochemical spectrum: heavy metals predominate in some, trace elements (C8) predominate in others; the same applies to conditionally background samples. The specific technogenic Tyumen cluster C4 is distinguished by high values of Cu and Mo. Conditionally isolated background clusters had a low content of microelements. To identify environmental conditions, we moved from the standardized values of cluster analysis to their material content. It is shown that some clusters contain heavy metals, while others contain Sc, Cr, Ni, Zn, and Cd. Conditionally isolated background clusters had a low content of microelements. Using the content of microelements of the C5 cluster as a background, the environmental index of pollution Zc was calculated, which in Tobolsk reaches a high and dangerous level of pollution 60,8–83,7, in Tyumen – an average, moderately dangerous level Zc (32–64). The use of cluster analysis makes it possible to determine the trace elements pollution of snow dust and the territory as a whole.","PeriodicalId":51816,"journal":{"name":"Bulletin of the Tomsk Polytechnic University-Geo Assets Engineering","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90709550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-31DOI: 10.18799/24131830/2023/8/4157
A. N. Nikitenkov, D. Novikov, A. Maksimova, A. Penigin, I. V. Varaksina, E. Zhukovskaya
Link for citation: Nikitenkov A.N., Novikov D.A., Maksimova A.A., Penigin A.V., Varaksina I.V., Zhukovskaya E.A. On the possibility of implementing CCS projects in the carbonate reservoirs of the Siberian Platform. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 68-78. In Rus. The relevance. Carbon capture utilization and storage technology involving geological storage of carbon dioxide in deep aquifers is widely used in the world as this technology is aimed at decreasing the emission of greenhouse gases into the Earth’s atmosphere and minimizing the influence of these gases on the global climate change. Objective: to carry out preliminary investigation of the features of water – rock – carbon dioxide interactions in application to carbonate collectors, which are widespread in hydrogeological basins over the territory of the Russian Federation and are potentially suitable as carbon dioxide storage facilities. These processes are considered by the example of the ancient Siberian Platform, where industrial production of hydrocarbons is currently increasing, and a series of large-scale projects in the area of petroleum and gas chemistry are under implementation. Methods. Mathematical physical and chemical modeling was applied to solve the problem. The calculations were implemented by the HydroGeo software package, in which the achievement of chemical equilibria for the «water–rock» system is implemented on the basis of the method of equilibrium constants. Results. The obtained results allow us to evaluate the directions of geochemical processes in the collectors under consideration and to provide qualitative estimation of changes in the pore space under the conditions of its saturation with carbon dioxide, with respect to different saturation degrees. It is established that solution acidification is observed as a result of its saturation with СО2, with the transition of chemical elements to the prevailing forms of complex ions bound with hydrocarbonate and chloride ions (Mn, Na, K). At the same time, saturation with carbon dioxide does not have so substantial effect on the forms of Ca and Fe migration. Special attention is attracted to Al, which is transformed almost completely from complex forms into Al3+ in the presence of carbon dioxide. In the studied reference samples, rather intense transformation of collector rocks with redistribution of elements between the primary and secondary mineral phases is observed (both rock dissolution and precipitation up to several hundred g/dm3) with comparatively small absolute changes in open porosity. In a series of the considered objects, the dissolution of calcite and dolomite proceeds due to a decrease in pH. The directions of transformations, as well as the trend of changes in filtration-capacity properties, are determined by the specific mineralogical combination of collector rocks and the brine present in them, as well as by the stage of evolution of the s
{"title":"ON THE POSSIBILITY OF IMPLEMENTING CCS PROJECTS IN THE CARBONATE RESERVOIRS OF THE SIBERIAN PLATFORM","authors":"A. N. Nikitenkov, D. Novikov, A. Maksimova, A. Penigin, I. V. Varaksina, E. Zhukovskaya","doi":"10.18799/24131830/2023/8/4157","DOIUrl":"https://doi.org/10.18799/24131830/2023/8/4157","url":null,"abstract":"Link for citation: Nikitenkov A.N., Novikov D.A., Maksimova A.A., Penigin A.V., Varaksina I.V., Zhukovskaya E.A. On the possibility of implementing CCS projects in the carbonate reservoirs of the Siberian Platform. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 68-78. In Rus.\u0000The relevance. Carbon capture utilization and storage technology involving geological storage of carbon dioxide in deep aquifers is widely used in the world as this technology is aimed at decreasing the emission of greenhouse gases into the Earth’s atmosphere and minimizing the influence of these gases on the global climate change. Objective: to carry out preliminary investigation of the features of water – rock – carbon dioxide interactions in application to carbonate collectors, which are widespread in hydrogeological basins over the territory of the Russian Federation and are potentially suitable as carbon dioxide storage facilities. These processes are considered by the example of the ancient Siberian Platform, where industrial production of hydrocarbons is currently increasing, and a series of large-scale projects in the area of petroleum and gas chemistry are under implementation. Methods. Mathematical physical and chemical modeling was applied to solve the problem. The calculations were implemented by the HydroGeo software package, in which the achievement of chemical equilibria for the «water–rock» system is implemented on the basis of the method of equilibrium constants. Results. The obtained results allow us to evaluate the directions of geochemical processes in the collectors under consideration and to provide qualitative estimation of changes in the pore space under the conditions of its saturation with carbon dioxide, with respect to different saturation degrees. It is established that solution acidification is observed as a result of its saturation with СО2, with the transition of chemical elements to the prevailing forms of complex ions bound with hydrocarbonate and chloride ions (Mn, Na, K). At the same time, saturation with carbon dioxide does not have so substantial effect on the forms of Ca and Fe migration. Special attention is attracted to Al, which is transformed almost completely from complex forms into Al3+ in the presence of carbon dioxide. In the studied reference samples, rather intense transformation of collector rocks with redistribution of elements between the primary and secondary mineral phases is observed (both rock dissolution and precipitation up to several hundred g/dm3) with comparatively small absolute changes in open porosity. In a series of the considered objects, the dissolution of calcite and dolomite proceeds due to a decrease in pH. The directions of transformations, as well as the trend of changes in filtration-capacity properties, are determined by the specific mineralogical combination of collector rocks and the brine present in them, as well as by the stage of evolution of the s","PeriodicalId":51816,"journal":{"name":"Bulletin of the Tomsk Polytechnic University-Geo Assets Engineering","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78226859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-31DOI: 10.18799/24131830/2023/8/4125
Roman E. Shcherbakov, Artem V. Kovalev, A. Ilin
Link for citation: Shcherbakov R.E., Kovalev A.V., Ilin A.V. Using supervised machine learning algorithms for kick detection during managed pressure drilling. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 151-163. In Rus. The relevance. The depletion of readily available hydrocarbon reserves determines development of fields with complex geological environment. Managed Pressure Drilling marked the era of high-precision well parameters monitoring during drilling. This technology has provided access to deposits that were previously considered practically «unusable». The main goal of using managed pressure drilling technology is to control downhole pressure within specified limits in order to prevent fluid loss, fracturing, as well as unwanted kick of reservoir fluids into the wellbore. However, if for a certain period of time there is a kick of reservoir fluid from an open borehole or there are losses of drilling fluid, then it is not possible to control the downhole pressure within the specified limits. In this case, it is necessary to use an additional method or algorithm that marks such periods and indicates to the operator or the monitoring system about the presence of kick or absorption of drilling mud. The problems described earlier predetermined the aim of this work. It is claimed that the intelligent system can automatically monitor and analyze parameter trends, detect anomalies in the change of drilling parameters in real time, predict in advance the probability of formation fluid kick and warn the drilling engineer at an early stage, which will allow implementing preventive activity to maintain the required downhole pressure profile. The main aim: create the kick detection machine learning model which predicts kick probability during the managed pressure well drilling using mud logging service data. Objects: multivariate-sensing time-series data of mud logging and measured pressure drilling service. Methods: analysis and evaluation of anomaly detection techniques of determining kick during managed pressure well drilling using machine learning. Results. The authors have performed the overview of anomaly detection techniques of determining kick during managed pressure well drilling using machine learning. Classical machine learning algorithms were tested with labeled test data in order to evaluate its performance. The authors have developed kick detection model with gradient boosting algorithm, evaluated its performance with labeled test dataset. Promising areas of further research were identified.
引用链接:Shcherbakov r.e.， Kovalev A.V.， Ilin A.V.使用监督式机器学习算法进行控压钻井中的井涌检测。托木斯克理工大学公报。岩土工程Аssets, 2023，第334卷，第2期。8日,рр。151 - 163。俄文。的相关性。地质环境复杂的油田，油气储量的枯竭决定了油田的开发。控压钻井标志着钻井过程中高精度井参数监测的时代。这项技术提供了以前被认为实际上“不可用”的矿床。使用控压钻井技术的主要目标是将井下压力控制在规定的范围内，以防止流体漏失、压裂以及不必要的储层流体进入井筒。然而，如果在一段时间内，裸眼井中有储层流体的涌动或钻井液的漏失，则不可能将井下压力控制在规定的范围内。在这种情况下，有必要使用额外的方法或算法来标记这些周期，并向操作人员或监控系统指示是否存在井涌或钻井泥浆的吸收。前面描述的问题决定了这项工作的目的。据称，该智能系统可以自动监测和分析参数趋势，实时检测钻井参数变化中的异常情况，提前预测地层流体溢流的可能性，并在早期阶段向钻井工程师发出警告，从而实施预防措施，保持所需的井下压力剖面。主要目的:建立井涌检测机器学习模型，利用泥浆测井服务数据预测控压井钻井过程中的井涌概率。研究对象:录井多变量传感时间序列数据及实测压力钻井服务。方法:利用机器学习技术对控压井井涌井异常检测技术进行分析和评价。结果。作者概述了利用机器学习确定控压井钻井过程中井涌的异常检测技术。为了评估经典机器学习算法的性能，使用标记的测试数据对其进行了测试。建立了基于梯度增强算法的井涌检测模型，并用标记测试数据集对其性能进行了评价。确定了有希望进一步研究的领域。
{"title":"USING SUPERVISED MACHINE LEARNING ALGORITHMS FOR KICK DETECTION DURING MANAGED PRESSURE DRILLING","authors":"Roman E. Shcherbakov, Artem V. Kovalev, A. Ilin","doi":"10.18799/24131830/2023/8/4125","DOIUrl":"https://doi.org/10.18799/24131830/2023/8/4125","url":null,"abstract":"Link for citation: Shcherbakov R.E., Kovalev A.V., Ilin A.V. Using supervised machine learning algorithms for kick detection during managed pressure drilling. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 151-163. In Rus.\u0000The relevance. The depletion of readily available hydrocarbon reserves determines development of fields with complex geological environment. Managed Pressure Drilling marked the era of high-precision well parameters monitoring during drilling. This technology has provided access to deposits that were previously considered practically «unusable». The main goal of using managed pressure drilling technology is to control downhole pressure within specified limits in order to prevent fluid loss, fracturing, as well as unwanted kick of reservoir fluids into the wellbore. However, if for a certain period of time there is a kick of reservoir fluid from an open borehole or there are losses of drilling fluid, then it is not possible to control the downhole pressure within the specified limits. In this case, it is necessary to use an additional method or algorithm that marks such periods and indicates to the operator or the monitoring system about the presence of kick or absorption of drilling mud. The problems described earlier predetermined the aim of this work. It is claimed that the intelligent system can automatically monitor and analyze parameter trends, detect anomalies in the change of drilling parameters in real time, predict in advance the probability of formation fluid kick and warn the drilling engineer at an early stage, which will allow implementing preventive activity to maintain the required downhole pressure profile. The main aim: create the kick detection machine learning model which predicts kick probability during the managed pressure well drilling using mud logging service data. Objects: multivariate-sensing time-series data of mud logging and measured pressure drilling service. Methods: analysis and evaluation of anomaly detection techniques of determining kick during managed pressure well drilling using machine learning. Results. The authors have performed the overview of anomaly detection techniques of determining kick during managed pressure well drilling using machine learning. Classical machine learning algorithms were tested with labeled test data in order to evaluate its performance. The authors have developed kick detection model with gradient boosting algorithm, evaluated its performance with labeled test dataset. Promising areas of further research were identified.","PeriodicalId":51816,"journal":{"name":"Bulletin of the Tomsk Polytechnic University-Geo Assets Engineering","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76239320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-31DOI: 10.18799/24131830/2023/8/4066
A. Totanov, V. Molchanova, K. Urazakov
Link for citation: Totanov A.S., Molchanova V.A., Urazakov K.R. Study of the performance of the dynamic level stabilization system operation in the wellbore equipped with an electrical submersible pump unit. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 210-219. In Rus. The relevance of the study is related to the widespread use of electrical submersible pump units in the production of low-viscosity oils and water-gas-oil emulsions at this stage of development of mechanized production. However, the current production conditions associated with changing reservoir parameters bring to the fore a number of technical problems that need to be solved. One of these challenges is the phenomenon in which the dynamic level of the well decreases due to changes in reservoir parameters (reservoir pressure, productivity factor, etc.). Decrease of dynamic liquid level in the well leads to complications during operation of electrical submersible pump units. As a consequence, the increased cavitation in impellers is possible due to pressure reduction on the pump intake, and also full pump supply failure is not excluded at significant reduction of the dynamic level of the borehole fluid. In this relation, a technical solution, consisting in installation of bypass device (electrical valve) above the place of suspension of electrical submersible pump plant to maintain stable dynamic liquid level in the well and avoid complications during pump operation, was suggested. To confirm the feasibility of the dynamic level stabilization system, a mathematical model was developed to evaluate the effectiveness of complication prevention with the help of the proposed technical solution during the operation of the electric centrifugal pump unit. The main aim of the research is to develop a calculation method for studying the dynamics of the dynamic level stabilization system. Objects: an electrical submersible pump unit in conjunction with a system for stabilizing the dynamic level of the well. The influence of the diameter and length of the electrical valve on the efficiency of the dynamic level recovery was studied, taking into account hydraulic losses during the system operation. Methods. The research method is reduced to numerical solution of differential, linear and non-linear equations describing flow and pressure at electrical submersible pump unit outlet in steady-state mode, fluid flow through the electrical valve taking into account hydraulic resistances, flow of hydrodynamic processes in annular space during stabilization system operation, that is change of fluid level above the pump depending on borehole conditions and design parameters of electric valve. Results. Effect of parameters of the bypass valve – the diameter of flow section and length on dynamics of change of a liquid level above the pump, as well as the impact of liquid properties, namely its viscosity on intensity of restoration of a liquid level above t
{"title":"STUDY OF THE PERFORMANCE OF THE DYNAMIC LEVEL STABILIZATION SYSTEM OPERATION IN THE WELLBORE EQUIPPED WITH AN ELECTRICAL SUBMERSIBLE PUMP UNIT","authors":"A. Totanov, V. Molchanova, K. Urazakov","doi":"10.18799/24131830/2023/8/4066","DOIUrl":"https://doi.org/10.18799/24131830/2023/8/4066","url":null,"abstract":"Link for citation: Totanov A.S., Molchanova V.A., Urazakov K.R. Study of the performance of the dynamic level stabilization system operation in the wellbore equipped with an electrical submersible pump unit. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 210-219. In Rus.\u0000The relevance of the study is related to the widespread use of electrical submersible pump units in the production of low-viscosity oils and water-gas-oil emulsions at this stage of development of mechanized production. However, the current production conditions associated with changing reservoir parameters bring to the fore a number of technical problems that need to be solved. One of these challenges is the phenomenon in which the dynamic level of the well decreases due to changes in reservoir parameters (reservoir pressure, productivity factor, etc.). Decrease of dynamic liquid level in the well leads to complications during operation of electrical submersible pump units. As a consequence, the increased cavitation in impellers is possible due to pressure reduction on the pump intake, and also full pump supply failure is not excluded at significant reduction of the dynamic level of the borehole fluid. In this relation, a technical solution, consisting in installation of bypass device (electrical valve) above the place of suspension of electrical submersible pump plant to maintain stable dynamic liquid level in the well and avoid complications during pump operation, was suggested. To confirm the feasibility of the dynamic level stabilization system, a mathematical model was developed to evaluate the effectiveness of complication prevention with the help of the proposed technical solution during the operation of the electric centrifugal pump unit. The main aim of the research is to develop a calculation method for studying the dynamics of the dynamic level stabilization system. Objects: an electrical submersible pump unit in conjunction with a system for stabilizing the dynamic level of the well. The influence of the diameter and length of the electrical valve on the efficiency of the dynamic level recovery was studied, taking into account hydraulic losses during the system operation. Methods. The research method is reduced to numerical solution of differential, linear and non-linear equations describing flow and pressure at electrical submersible pump unit outlet in steady-state mode, fluid flow through the electrical valve taking into account hydraulic resistances, flow of hydrodynamic processes in annular space during stabilization system operation, that is change of fluid level above the pump depending on borehole conditions and design parameters of electric valve. Results. Effect of parameters of the bypass valve – the diameter of flow section and length on dynamics of change of a liquid level above the pump, as well as the impact of liquid properties, namely its viscosity on intensity of restoration of a liquid level above t","PeriodicalId":51816,"journal":{"name":"Bulletin of the Tomsk Polytechnic University-Geo Assets Engineering","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80488622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-31DOI: 10.18799/24131830/2023/8/4069
V. Poturay
Link for citation: Poturay V.A. Organic matter in the Paratunka geothermal field (Kamchatka) thermal waters. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 98-109. In Rus. The relevance of the research is determined by the need to obtain actual data on the composition of organic compounds in thermal mineral waters. Hydrothermal systems contain different classes of organic matter, its composition in the Far East thermal waters being poorly investigated. The organic matter study is primarily aimed at elucidating the mechanisms of organic components transformation under high temperatures and pressure. This study contributes to deeper understanding of the processes occurring in the system «water–rock–organic matter». The main aim of the research is to determine the organic compounds composition and genesis in the Paratunka geothermal area (Northern and Karymshin sites) thermal waters; estimation of the hydrocarbons molecular weight distribution; compare the obtained data with that for other hydrothermal systems of Kamchatka. Objects: the Paratunka hydrothermal system (thermal water from deep wells in the Northern and Karymshin areas), the Mutnovka and Uzon hydrothermal systems (steam-water mixture from deep wells in the Dachnoe and North Mutnovskaya thermal fields, and thermal water from shallow wells in the Eastern thermal field). Methods: field routes, solid-phase extraction, capillary gas chromatography-mass spectrometry, calculation of geochemical hydrocarbon distribution indices. Results. In the Paratunka geothermal area thermal waters 40 organic compounds are found, which belong to 11 homological series. Aromatic and aliphatic hydrocarbons of thermogenic (formed as a result of thermocatalytic transformation of organic residues) and bacterial origin reach their maximum distribution. The specific molecular-weight distribution of normal alkanes showing only even low-molecular-weight homologues is characteristic of the Karymshin thermal waters. Comparison of the data with the results of the study of organic matter in Kamchatka (the Paratunka, Mutnovka, and Uzon geothermal areas) demonstrates a great similarity of main organic components composition, all of them showing a sharp predominance of aliphatic and aromatic hydrocarbons.
{"title":"ORGANIC MATTER IN THE PARATUNKA GEOTHERMAL FIELD (KAMCHATKA) THERMAL WATERS","authors":"V. Poturay","doi":"10.18799/24131830/2023/8/4069","DOIUrl":"https://doi.org/10.18799/24131830/2023/8/4069","url":null,"abstract":"Link for citation: Poturay V.A. Organic matter in the Paratunka geothermal field (Kamchatka) thermal waters. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 98-109. In Rus.\u0000The relevance of the research is determined by the need to obtain actual data on the composition of organic compounds in thermal mineral waters. Hydrothermal systems contain different classes of organic matter, its composition in the Far East thermal waters being poorly investigated. The organic matter study is primarily aimed at elucidating the mechanisms of organic components transformation under high temperatures and pressure. This study contributes to deeper understanding of the processes occurring in the system «water–rock–organic matter». The main aim of the research is to determine the organic compounds composition and genesis in the Paratunka geothermal area (Northern and Karymshin sites) thermal waters; estimation of the hydrocarbons molecular weight distribution; compare the obtained data with that for other hydrothermal systems of Kamchatka. Objects: the Paratunka hydrothermal system (thermal water from deep wells in the Northern and Karymshin areas), the Mutnovka and Uzon hydrothermal systems (steam-water mixture from deep wells in the Dachnoe and North Mutnovskaya thermal fields, and thermal water from shallow wells in the Eastern thermal field). Methods: field routes, solid-phase extraction, capillary gas chromatography-mass spectrometry, calculation of geochemical hydrocarbon distribution indices. Results. In the Paratunka geothermal area thermal waters 40 organic compounds are found, which belong to 11 homological series. Aromatic and aliphatic hydrocarbons of thermogenic (formed as a result of thermocatalytic transformation of organic residues) and bacterial origin reach their maximum distribution. The specific molecular-weight distribution of normal alkanes showing only even low-molecular-weight homologues is characteristic of the Karymshin thermal waters. Comparison of the data with the results of the study of organic matter in Kamchatka (the Paratunka, Mutnovka, and Uzon geothermal areas) demonstrates a great similarity of main organic components composition, all of them showing a sharp predominance of aliphatic and aromatic hydrocarbons.","PeriodicalId":51816,"journal":{"name":"Bulletin of the Tomsk Polytechnic University-Geo Assets Engineering","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89452014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-31DOI: 10.18799/24131830/2023/8/4032
A. Gilmanov, A. V. Rodionova, A. Shevelev
Link for citation: Gilmanov A.Ya., Rodionova A.V., Shevelev A.P. Calculation of the bottom-hole parameters of the heat carrier during its movement along the wellbore of a directional well considering the flow structure. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 121-128. In Rus. The relevance of the research is caused by the need to involve fields with high viscosity oil in the development, since fields with low and medium viscosity oil are depleted. Oil viscosity directly depends on the temperature, therefore, thermal enhanced oil recovery methods are used to reduce the viscosity. From the point of view of using the heat injected into the formation, the most effective thermal method is the cyclic steam stimulation, i. e. cyclic steam injection into the well. However, when steam moves through the pipe, it condenses, that is why the production at the well bottom-hole are often has high water cut. Accurate calculation of the heat carrier parameters along the entire wellbore will help to avoid this problem. The main aim of the research is to determine the effect of the well inclination angle, steam quality at the wellhead, initial pressure and thermal conductivity of thermal insulation on the heat carrier characteristics in the wellbore, considering flow modes. Objects of the research are deposits with high-viscosity oil. Methods: physical and mathematical modeling of injection of a two-phase (steam-water) heat carrier into the reservoir based on the laws of conservation of mass, momentum and energy, considering the movement of the heat carrier along the wellbore of a directional well, heat loss through the walls of the well and fluid flow modes. Results. The calculation of the steam quality and heat carrier flow rate along the wellbore of a directional well was conducted. The influence of the well inclination angle on the parameters of the heat carrier at the well bottom-hole (steam quality, pressure and wellhead flow rate of the heat carrier) is analyzed. It is determined that the smaller the well inclination angle, the deeper the steam penetrates through the depth of the formation.
{"title":"CALCULATION OF THE BOTTOM-HOLE PARAMETERS OF THE HEAT CARRIER DURING ITS MOVEMENT ALONG THE WELLBORE OF A DIRECTIONAL WELL CONSIDERING THE FLOW STRUCTURE","authors":"A. Gilmanov, A. V. Rodionova, A. Shevelev","doi":"10.18799/24131830/2023/8/4032","DOIUrl":"https://doi.org/10.18799/24131830/2023/8/4032","url":null,"abstract":"Link for citation: Gilmanov A.Ya., Rodionova A.V., Shevelev A.P. Calculation of the bottom-hole parameters of the heat carrier during its movement along the wellbore of a directional well considering the flow structure. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 121-128. In Rus.\u0000The relevance of the research is caused by the need to involve fields with high viscosity oil in the development, since fields with low and medium viscosity oil are depleted. Oil viscosity directly depends on the temperature, therefore, thermal enhanced oil recovery methods are used to reduce the viscosity. From the point of view of using the heat injected into the formation, the most effective thermal method is the cyclic steam stimulation, i. e. cyclic steam injection into the well. However, when steam moves through the pipe, it condenses, that is why the production at the well bottom-hole are often has high water cut. Accurate calculation of the heat carrier parameters along the entire wellbore will help to avoid this problem. The main aim of the research is to determine the effect of the well inclination angle, steam quality at the wellhead, initial pressure and thermal conductivity of thermal insulation on the heat carrier characteristics in the wellbore, considering flow modes. Objects of the research are deposits with high-viscosity oil. Methods: physical and mathematical modeling of injection of a two-phase (steam-water) heat carrier into the reservoir based on the laws of conservation of mass, momentum and energy, considering the movement of the heat carrier along the wellbore of a directional well, heat loss through the walls of the well and fluid flow modes. Results. The calculation of the steam quality and heat carrier flow rate along the wellbore of a directional well was conducted. The influence of the well inclination angle on the parameters of the heat carrier at the well bottom-hole (steam quality, pressure and wellhead flow rate of the heat carrier) is analyzed. It is determined that the smaller the well inclination angle, the deeper the steam penetrates through the depth of the formation.","PeriodicalId":51816,"journal":{"name":"Bulletin of the Tomsk Polytechnic University-Geo Assets Engineering","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89146587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-31DOI: 10.18799/24131830/2023/8/4102
M. V. Kozina, N. Studenkova, Darya E. Paltseva
Link for citation: Kozina M.V., Studenkova N.A., Paltseva D.E. Formation of approaches to the development of the digital infrastructure of the cadastral valuation system on the example of agricultural land. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 7-16. In Rus. The relevance of the work is caused by the existing imperfection of organizational, technical and information security of the state cadastral valuation in the Russian Federation in the context of digital transformation in the field of land and property relations. This state is determined by the departmental disunity of state information resources. This is especially clearly illustrated in the agricultural land management system, which has negative impact on the reliability and quality of determining the cadastral value of such lands. The aim: to propose a conceptual solution for the development of the digital infrastructure of the cadastral assessment system and its information support. The methods: theoretical analysis of the study and generalization, as well as other generally accepted analytical methods. Results. Modern model of the organization of information interaction of departmental data sources on the state and use of agricultural land was formed. The resulting model allowed us to identify problems that complicate the effective information support of cadastral valuation of agricultural land. As an evidence base for the lack of complete and reliable information about agricultural lands, an analysis of reports on the state cadastral assessment of agricultural lands in a number of regions was carried out. The results of the analysis showed that in most cases appraisers do not use the price-forming factors provided by the current methodology, due to the lack of available and reliable information. As a result of the conducted research, a solution was developed for the development of the digital infrastructure of the cadastral assessment system. A technological scheme for collecting, processing and analyzing initial data on the values of price-forming factors is proposed, based on the introduction of the digital service «Cadastral Assessment», which provides spatial data about objects.
{"title":"FORMATION OF APPROACHES TO THE DEVELOPMENT OF THE DIGITAL INFRASTRUCTURE OF THE CADASTRAL VALUATION SYSTEM ON THE EXAMPLE OF AGRICULTURAL LAND","authors":"M. V. Kozina, N. Studenkova, Darya E. Paltseva","doi":"10.18799/24131830/2023/8/4102","DOIUrl":"https://doi.org/10.18799/24131830/2023/8/4102","url":null,"abstract":"Link for citation: Kozina M.V., Studenkova N.A., Paltseva D.E. Formation of approaches to the development of the digital infrastructure of the cadastral valuation system on the example of agricultural land. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 7-16. In Rus.\u0000The relevance of the work is caused by the existing imperfection of organizational, technical and information security of the state cadastral valuation in the Russian Federation in the context of digital transformation in the field of land and property relations. This state is determined by the departmental disunity of state information resources. This is especially clearly illustrated in the agricultural land management system, which has negative impact on the reliability and quality of determining the cadastral value of such lands. The aim: to propose a conceptual solution for the development of the digital infrastructure of the cadastral assessment system and its information support. The methods: theoretical analysis of the study and generalization, as well as other generally accepted analytical methods. Results. Modern model of the organization of information interaction of departmental data sources on the state and use of agricultural land was formed. The resulting model allowed us to identify problems that complicate the effective information support of cadastral valuation of agricultural land. As an evidence base for the lack of complete and reliable information about agricultural lands, an analysis of reports on the state cadastral assessment of agricultural lands in a number of regions was carried out. The results of the analysis showed that in most cases appraisers do not use the price-forming factors provided by the current methodology, due to the lack of available and reliable information. As a result of the conducted research, a solution was developed for the development of the digital infrastructure of the cadastral assessment system. A technological scheme for collecting, processing and analyzing initial data on the values of price-forming factors is proposed, based on the introduction of the digital service «Cadastral Assessment», which provides spatial data about objects.","PeriodicalId":51816,"journal":{"name":"Bulletin of the Tomsk Polytechnic University-Geo Assets Engineering","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75506025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-31DOI: 10.18799/24131830/2023/8/4065
V. Galkin, Anastasia S. Suvorova
Link for citation: Galkin V.I., Suvorova A.S. Development of a statistical model for predicting the confirmability of the amplitudes of structures prepared from the deposits of the middle carboniferous in the Perm region. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 129-136. In Rus. The relevance of the research is caused by the requirement to maintain the confirmability of resources of category D0 with an addition to reserves of categories C1+C2 at a high level. The assessment of the resources of the prepared structures is carried out by total petroleum systems in the presence of open industrial deposits of hydrocarbons in analog fields, as well as under the condition of mapping closed amplitude structures on reflective surfaces. One of the factors influencing the decrease in the confirmability factors is the change in the structural constructions from the prospecting and evaluation to the exploration stages of geological exploration. The main aim of the research is to create, based on retrospective data, a probabilistic prediction model that allows us to determine the most reliable hydrocarbon prospecting in the context of medium-carboniferous uplift deposits within the existing fund of prepared structures, adjust the current assessment of resources of category D0 and exclude drilling of new exploration and evaluation wells within unpromising objects. Objects. The author have created the database for the research, which includes information about 125 prepared structures removed from drilling from 1997 to 2021. It includes information about the amplitudes of structures in accordance with the materials for their preparation (Ap) and according to the updating of structural constructions based on the results of deep exploration, exploration drilling, seismic exploration in open fields, etc. (Aa). The research methodology is based on the use of mathematical statistics methods. The results. The correlation analysis of the amplitudes of structures based on the materials of passports and the amplitudes of structures updated according to deep drilling data was performed. According to the results of the analysis, the correlation field was divided into two subfields between Ap and Aa. When using a detailed statistical analysis of the Aa and Ap correlations between the subfields, a boundary value of 13 m was established, which made it possible to develop an individual probabilistic linear model for predicting the confirmability of the amplitude of the structure by the values of the Ap.
Galkin V.I.， Suvorova a . s .建立了一种统计模型，用于预测从彼尔姆地区中石炭统沉积物中制备的构造振幅的可确认性。托木斯克理工大学公报。岩土工程Аssets, 2023，第334卷，第2期。8日,рр。129 - 136。俄文。研究的相关性是由于需要保持D0类资源的可确认性，并在较高水平上增加C1+C2类资源的储量。在模拟油田中存在开放的工业烃类矿床的情况下，以及在反射面上绘制封闭振幅结构的情况下，通过总石油系统对所制备结构的资源进行评估。地质勘查从找矿、评价阶段到勘查阶段，构造构造的变化是影响可证实性因子降低的因素之一。研究的主要目的是在回顾性数据的基础上，建立一个概率预测模型，使我们能够在现有的准备构造基金中确定最可靠的中石炭系隆起矿床的油气勘探，调整目前对D0类资源的评估，并排除在没有前景的目标中钻探新的勘探和评价井。对象。作者为研究创建了数据库，其中包括1997年至2021年从钻井中移除的125个预制结构的信息。它包括根据构造的制备材料(Ap)和根据深部勘探、勘探钻井、野外地震勘探等结果对构造进行更新(Aa)而得到的构造振幅信息。研究方法以数理统计方法为基础。结果。基于护照材料的结构振幅与根据深钻数据更新的结构振幅进行了相关性分析。根据分析结果，将相关场划分为Ap和Aa之间的两个子场。当对子场之间的Aa和Ap相关性进行详细的统计分析时，建立了一个13 m的边界值，这使得可以建立一个单独的概率线性模型，用于预测Ap值对结构振幅的可证实性。
{"title":"DEVELOPMENT OF A STATISTICAL MODEL FOR PREDICTING THE CONFIRMABILITY OF THE AMPLITUDES OF STRUCTURES PREPARED FROM THE DEPOSITS OF THE MIDDLE CARBONIFEROUS IN THE PERM REGION","authors":"V. Galkin, Anastasia S. Suvorova","doi":"10.18799/24131830/2023/8/4065","DOIUrl":"https://doi.org/10.18799/24131830/2023/8/4065","url":null,"abstract":"Link for citation: Galkin V.I., Suvorova A.S. Development of a statistical model for predicting the confirmability of the amplitudes of structures prepared from the deposits of the middle carboniferous in the Perm region. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 129-136. In Rus.\u0000The relevance of the research is caused by the requirement to maintain the confirmability of resources of category D0 with an addition to reserves of categories C1+C2 at a high level. The assessment of the resources of the prepared structures is carried out by total petroleum systems in the presence of open industrial deposits of hydrocarbons in analog fields, as well as under the condition of mapping closed amplitude structures on reflective surfaces. One of the factors influencing the decrease in the confirmability factors is the change in the structural constructions from the prospecting and evaluation to the exploration stages of geological exploration. The main aim of the research is to create, based on retrospective data, a probabilistic prediction model that allows us to determine the most reliable hydrocarbon prospecting in the context of medium-carboniferous uplift deposits within the existing fund of prepared structures, adjust the current assessment of resources of category D0 and exclude drilling of new exploration and evaluation wells within unpromising objects. Objects. The author have created the database for the research, which includes information about 125 prepared structures removed from drilling from 1997 to 2021. It includes information about the amplitudes of structures in accordance with the materials for their preparation (Ap) and according to the updating of structural constructions based on the results of deep exploration, exploration drilling, seismic exploration in open fields, etc. (Aa). The research methodology is based on the use of mathematical statistics methods. The results. The correlation analysis of the amplitudes of structures based on the materials of passports and the amplitudes of structures updated according to deep drilling data was performed. According to the results of the analysis, the correlation field was divided into two subfields between Ap and Aa. When using a detailed statistical analysis of the Aa and Ap correlations between the subfields, a boundary value of 13 m was established, which made it possible to develop an individual probabilistic linear model for predicting the confirmability of the amplitude of the structure by the values of the Ap.","PeriodicalId":51816,"journal":{"name":"Bulletin of the Tomsk Polytechnic University-Geo Assets Engineering","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85309266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-31DOI: 10.18799/24131830/2023/8/4190
B. Lukutin, E. Shandarova, M. Popov
Link for citation: Lukutin B.B., Shandarova E.B., Popov M. M. Operating modes of micro-hydroelectric power plant with output voltage stabilization using inverter control. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 51-58. In Rus. The relevance. The use of Russia's hydroelectric potential for electricity generation is one of the cleanest and environmentally friendly methods as it does not result in the emission of harmful substances and carbon dioxide into the atmosphere. Moreover, it is a reliable and efficient source of energy as water is a constant source of energy. Hydro turbines are used to convert the energy of water flow into electrical energy, which effectively ensures more reliable and stable production capacity for hydroelectric installations. However, micro-hydroelectric power plants have some drawbacks related to difficulties in ensuring the high quality of produced electricity of autonomous power supply systems. This is due to the fact that the load on the autonomous power supply system can vary not only in magnitude but also in nature, which makes it difficult to maintain a stable level of electricity production. The main goal of the research is to determine the ranges of variation of the output electrical parameters of a non-regulated hydrogenerator operating as part of an inverter-based micro-hydroelectric power station for rural domestic consumers. Additionally, the task is to formulate requirements for the hydrogenerator and power conversion devices in static and dynamic operating modes of the autonomous power supply system. Object: inverter-based micro-hydroelectric power station. Methods: simulation modeling, and programming in Matlab Simulink. Results. A simulation model of an electric power supply system with an inverter microelectric power station was developed. The structure of microelectric power station is proposed, as well as the ranges of voltage changes of the microelectric power station generator are obtained.
{"title":"OPERATING MODES OF MICRO-HYDROELECTRIC POWER PLANT WITH OUTPUT VOLTAGE STABILIZATION USING INVERTER CONTROL","authors":"B. Lukutin, E. Shandarova, M. Popov","doi":"10.18799/24131830/2023/8/4190","DOIUrl":"https://doi.org/10.18799/24131830/2023/8/4190","url":null,"abstract":"Link for citation: Lukutin B.B., Shandarova E.B., Popov M. M. Operating modes of micro-hydroelectric power plant with output voltage stabilization using inverter control. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 8, рр. 51-58. In Rus.\u0000The relevance. The use of Russia's hydroelectric potential for electricity generation is one of the cleanest and environmentally friendly methods as it does not result in the emission of harmful substances and carbon dioxide into the atmosphere. Moreover, it is a reliable and efficient source of energy as water is a constant source of energy. Hydro turbines are used to convert the energy of water flow into electrical energy, which effectively ensures more reliable and stable production capacity for hydroelectric installations. However, micro-hydroelectric power plants have some drawbacks related to difficulties in ensuring the high quality of produced electricity of autonomous power supply systems. This is due to the fact that the load on the autonomous power supply system can vary not only in magnitude but also in nature, which makes it difficult to maintain a stable level of electricity production. The main goal of the research is to determine the ranges of variation of the output electrical parameters of a non-regulated hydrogenerator operating as part of an inverter-based micro-hydroelectric power station for rural domestic consumers. Additionally, the task is to formulate requirements for the hydrogenerator and power conversion devices in static and dynamic operating modes of the autonomous power supply system. Object: inverter-based micro-hydroelectric power station. Methods: simulation modeling, and programming in Matlab Simulink. Results. A simulation model of an electric power supply system with an inverter microelectric power station was developed. The structure of microelectric power station is proposed, as well as the ranges of voltage changes of the microelectric power station generator are obtained.","PeriodicalId":51816,"journal":{"name":"Bulletin of the Tomsk Polytechnic University-Geo Assets Engineering","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82688223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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