N. I. Korobova, Nadezhda S. Shevchuk, E. Karnyushina, R. Sautkin, E. Krasnova
Both sedimentological factors and secondary processes of lithogenesis influenced the formation of porosity and permeability properties of the reservoir rocks of the Vikulov suite of the Krasnoleninskoe field. The former includes the conditions of sedimentation of the deposits of the Vikulov suite, which at the initial stages of its formation were controlled by the development of a system of incised river valleys, the stages of filling of which, like their composition, have their own characteristics. Also, various genetic types of deposits were formed here. The formation of the upper part of the Vikulov suite took place in a shallow-marine setting, in conditions of storm and wave shallow water, which affected the thin-layered structure of the VK1-3 reservoir. On the other hand, in the sections of a number of wells, dense interlayers are noted, the formation of which is associated with both sedimentation and superimposed processes in lithogenesis, including the formation of hydrocarbon deposits. Therefore, the prediction of the distribution of productive reservoir rocks is the main task when creating a petrophysical model of the field, and to solve this problem, the methods of lithofacies and staged core analysis are used in the work.
{"title":"Сomposition and structure features of the Vikulov productive deposits (Krasnoleninsky arch) and their influence on reservoir properties","authors":"N. I. Korobova, Nadezhda S. Shevchuk, E. Karnyushina, R. Sautkin, E. Krasnova","doi":"10.18599/grs.2023.2.8","DOIUrl":"https://doi.org/10.18599/grs.2023.2.8","url":null,"abstract":"Both sedimentological factors and secondary processes of lithogenesis influenced the formation of porosity and permeability properties of the reservoir rocks of the Vikulov suite of the Krasnoleninskoe field. The former includes the conditions of sedimentation of the deposits of the Vikulov suite, which at the initial stages of its formation were controlled by the development of a system of incised river valleys, the stages of filling of which, like their composition, have their own characteristics. Also, various genetic types of deposits were formed here. The formation of the upper part of the Vikulov suite took place in a shallow-marine setting, in conditions of storm and wave shallow water, which affected the thin-layered structure of the VK1-3 reservoir. On the other hand, in the sections of a number of wells, dense interlayers are noted, the formation of which is associated with both sedimentation and superimposed processes in lithogenesis, including the formation of hydrocarbon deposits. Therefore, the prediction of the distribution of productive reservoir rocks is the main task when creating a petrophysical model of the field, and to solve this problem, the methods of lithofacies and staged core analysis are used in the work.","PeriodicalId":43752,"journal":{"name":"Georesursy","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47616947","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}
B. Osovetsky, K. P. Kazymov, I. Kolychev, Yan V. Savitckii, S. Galkin
On the example of an oil deposit of the Vereisk age which is one of the deposits in the Volga-Urals, lithotypes of rocks are distinguished, characterized by a fundamentally different structure of the void space. For selected lithotypes experiments were carried out on core samples with a change in the stress state of rocks under conditions of volumetric (pseudo-triaxial) compression. The pressure created in the experiments is identified with the development of processes at a distance from the epicenter of the hydraulic fractures appearance. Core samples were studied before and after exposure by non-destructive testing methods. The study of the sample structures by standard and tomographic methods did not allow us to establish significant changes during loading of the samples. At the same time, some increase in rock permeability was established in experiments. With this in mind, the samples were studied according to a technique specially developed by the authors using electron microscopy. The use of microscopic studies made it possible to obtain quantitative information about the change in the void space at a level inaccessible to X-ray tomography. As a result, it was found that both for potential reservoirs and for impermeable rocks, there is an increase in the length and opening of pre-existing fractures, which can be considered as the formation of additional effective fluid filtration channels. The experiments performed have changed the idea of the process of hydraulic fracture development and can be used in geological and technological calculations.
{"title":"Study of texture changes in the emptiness of rocks under the tension conditions by electron microscopy methods","authors":"B. Osovetsky, K. P. Kazymov, I. Kolychev, Yan V. Savitckii, S. Galkin","doi":"10.18599/grs.2023.2.16","DOIUrl":"https://doi.org/10.18599/grs.2023.2.16","url":null,"abstract":"On the example of an oil deposit of the Vereisk age which is one of the deposits in the Volga-Urals, lithotypes of rocks are distinguished, characterized by a fundamentally different structure of the void space. For selected lithotypes experiments were carried out on core samples with a change in the stress state of rocks under conditions of volumetric (pseudo-triaxial) compression. The pressure created in the experiments is identified with the development of processes at a distance from the epicenter of the hydraulic fractures appearance. Core samples were studied before and after exposure by non-destructive testing methods. The study of the sample structures by standard and tomographic methods did not allow us to establish significant changes during loading of the samples. At the same time, some increase in rock permeability was established in experiments. With this in mind, the samples were studied according to a technique specially developed by the authors using electron microscopy. The use of microscopic studies made it possible to obtain quantitative information about the change in the void space at a level inaccessible to X-ray tomography. As a result, it was found that both for potential reservoirs and for impermeable rocks, there is an increase in the length and opening of pre-existing fractures, which can be considered as the formation of additional effective fluid filtration channels. The experiments performed have changed the idea of the process of hydraulic fracture development and can be used in geological and technological calculations.","PeriodicalId":43752,"journal":{"name":"Georesursy","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45600142","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}
Maksim G. Khramchenkov, F. A. Trofimova, R. Usmanov, Roman E. Dolgopolov
An original model of microstructural transformations during clay swelling is considered, a thermodynamic and physical-mechanical description of the properties of clays during the process of swelling in vapors and aqueous solutions is given. The model proposed to explain these properties is based on the concept of mutual displacement of clay particles in clay rock aggregates during swelling with the formation of new pores between clay particles forming crystallites and aggregates. The model is based on the mechanism of utilization of the excess surface energy of clay particles during hydration, taking into account the influence of certain environmental parameters, for example, the concentration of the solution, through a change in the mutual orientation of clay particles, mainly due to rotations or shifts relative to each other, with the formation of an area available for further wetting free surface. In the thermodynamic description, such a process will manifest itself in a change in the surface interaction energy on the wetted areas of the particles when moving during mutual shifts and rotations. At the same time, one of the most important parameters of clay rock, microporosity, also changes. In this work, this phenomenon was experimentally studied using the methods of static moisture capacity and Mössbauer (NGR) spectroscopy. The proposed model makes it possible to explain the features of the clay hydration process and to compare the observed experimental data with the theoretical description of the clay swelling process.
{"title":"Microstructural transformations of swelling clay minerals","authors":"Maksim G. Khramchenkov, F. A. Trofimova, R. Usmanov, Roman E. Dolgopolov","doi":"10.18599/grs.2023.1.11","DOIUrl":"https://doi.org/10.18599/grs.2023.1.11","url":null,"abstract":"An original model of microstructural transformations during clay swelling is considered, a thermodynamic and physical-mechanical description of the properties of clays during the process of swelling in vapors and aqueous solutions is given. The model proposed to explain these properties is based on the concept of mutual displacement of clay particles in clay rock aggregates during swelling with the formation of new pores between clay particles forming crystallites and aggregates. The model is based on the mechanism of utilization of the excess surface energy of clay particles during hydration, taking into account the influence of certain environmental parameters, for example, the concentration of the solution, through a change in the mutual orientation of clay particles, mainly due to rotations or shifts relative to each other, with the formation of an area available for further wetting free surface. In the thermodynamic description, such a process will manifest itself in a change in the surface interaction energy on the wetted areas of the particles when moving during mutual shifts and rotations. At the same time, one of the most important parameters of clay rock, microporosity, also changes. In this work, this phenomenon was experimentally studied using the methods of static moisture capacity and Mössbauer (NGR) spectroscopy. The proposed model makes it possible to explain the features of the clay hydration process and to compare the observed experimental data with the theoretical description of the clay swelling process.","PeriodicalId":43752,"journal":{"name":"Georesursy","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45487354","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}
The boundary value problem of transient pressure field development around a horizontal well in a laterally infinite, inhomogeneous, anisotropic reservoir is formulated under assumption of slow spatial variation of the matrix permeability along the well axis. The well is represented as a linear fluid source/sink. The pressure distribution is expressed in the integral form on the basis of the instant point source perturbation function found explicitly. The inverse problem for fluid in/outflow density rates simulation is reduced to solution of the integral equation at a given pressure inside the well. A computational procedure is developed and implemented to predict the in/outflow rates along the well and estimate the impact of the permeability variations on the well performance. Series of calculations for constant, linear, and variable permeability cases are analyzed and compared. The difference of the obtained solution from the so-called “locally-constant” permeability approximation is demonstrated, accuracy and applicability of the latter approach are discussed.
{"title":"Representation of pressure field and fluid flows in the proximity of a horizontal well based on the instant point sources","authors":"Radmir I. Nafikov, Artur A. Salamatin","doi":"10.18599/grs.2023.1.14","DOIUrl":"https://doi.org/10.18599/grs.2023.1.14","url":null,"abstract":"The boundary value problem of transient pressure field development around a horizontal well in a laterally infinite, inhomogeneous, anisotropic reservoir is formulated under assumption of slow spatial variation of the matrix permeability along the well axis. The well is represented as a linear fluid source/sink. The pressure distribution is expressed in the integral form on the basis of the instant point source perturbation function found explicitly. The inverse problem for fluid in/outflow density rates simulation is reduced to solution of the integral equation at a given pressure inside the well. A computational procedure is developed and implemented to predict the in/outflow rates along the well and estimate the impact of the permeability variations on the well performance. Series of calculations for constant, linear, and variable permeability cases are analyzed and compared. The difference of the obtained solution from the so-called “locally-constant” permeability approximation is demonstrated, accuracy and applicability of the latter approach are discussed.","PeriodicalId":43752,"journal":{"name":"Georesursy","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49329925","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}
To date, significant foreign and domestic experience has been accumulated in the construction and operation of horizontal, multilateral and multilateral wells, as well as the restoration of an idle well stock by drilling sidetracks and sidetracks into various productive formations: low-permeability and highly dissected, with low values of effective oil-saturated thicknesses, degraded hydrodynamic connection with the contour area, etc. In this regard, it becomes extremely important to make a decision on choosing the optimal well profile in specific geological and physical conditions. The relevance of the work is also confirmed by the fact that at some development sites there is a decrease in the oil production rate of horizontal wells to the level of directional wells in the initial period of operation. Based on a significant difference in the reservoir properties of oil fields in the Perm Territory, all the analyzed objects operated by horizontal wells are combined into several groups: “northern” (N) and two “southern” (S1 and S2). The main parameter in the selection of groups was the coefficient of mobility of oil. The well-by-well technical and economic assessment performed in the article, based on the actual values of production over a long period, made it possible to identify the optimal well profile depending on the geological and physical characteristics of the reservoir. Combining the main geological characteristics that affect the technological parameters of well operation, with an economic assessment, the dependences of the net present value on the formation hydraulic conductivity were built. Dependences built for the first time make it possible to reasonably select the well profile in specific geological and physical conditions. Also in the work for a variety of geological and physical conditions, the value of the minimum profitable oil production for various well profiles is determined. Thus, the basis has been created, which is necessary for determining the profile of wells when planning production drilling.
{"title":"Justification of the optimal type of well completion profile based on a retrospective assessment of the technical and economic performance indicators","authors":"Roman A. Zaitsev, D. Martyushev","doi":"10.18599/grs.2023.1.12","DOIUrl":"https://doi.org/10.18599/grs.2023.1.12","url":null,"abstract":"To date, significant foreign and domestic experience has been accumulated in the construction and operation of horizontal, multilateral and multilateral wells, as well as the restoration of an idle well stock by drilling sidetracks and sidetracks into various productive formations: low-permeability and highly dissected, with low values of effective oil-saturated thicknesses, degraded hydrodynamic connection with the contour area, etc. In this regard, it becomes extremely important to make a decision on choosing the optimal well profile in specific geological and physical conditions. The relevance of the work is also confirmed by the fact that at some development sites there is a decrease in the oil production rate of horizontal wells to the level of directional wells in the initial period of operation. Based on a significant difference in the reservoir properties of oil fields in the Perm Territory, all the analyzed objects operated by horizontal wells are combined into several groups: “northern” (N) and two “southern” (S1 and S2). The main parameter in the selection of groups was the coefficient of mobility of oil. The well-by-well technical and economic assessment performed in the article, based on the actual values of production over a long period, made it possible to identify the optimal well profile depending on the geological and physical characteristics of the reservoir. Combining the main geological characteristics that affect the technological parameters of well operation, with an economic assessment, the dependences of the net present value on the formation hydraulic conductivity were built. Dependences built for the first time make it possible to reasonably select the well profile in specific geological and physical conditions. Also in the work for a variety of geological and physical conditions, the value of the minimum profitable oil production for various well profiles is determined. Thus, the basis has been created, which is necessary for determining the profile of wells when planning production drilling.","PeriodicalId":43752,"journal":{"name":"Georesursy","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47317822","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}
A. Brekhuntsov, Ivan I. Nesterov (Jr.), Elena G. Grammatchikova
An analysis of the state and changes in the resource base of the Yamalo-Nenets Autonomous Okrug and the Kara Sea shelf has been carried out. Data on production, reserves and resources of gas, oil and condensate are given. The distribution of hydrocarbon reserves by the field size, by licensed and unlicensed fund and oil and gas complexes are shown. The ratio production and reserves growth over a 20-year period is shown. The reserves of the region’s industrial categories make it possible to increase the annual gas production to 650–750 billion m3, oil – up to 80 million tons. It is necessary to carry out a differentiated assessment of the initial total resources of hydrocarbons for the complex of geological and field parameters.
{"title":"Status and development prospects of the hydrocarbon resource base of the Yamalo-Nenets Autonomous Okrug and the Kara Sea shelf","authors":"A. Brekhuntsov, Ivan I. Nesterov (Jr.), Elena G. Grammatchikova","doi":"10.18599/grs.2023.1.2","DOIUrl":"https://doi.org/10.18599/grs.2023.1.2","url":null,"abstract":"An analysis of the state and changes in the resource base of the Yamalo-Nenets Autonomous Okrug and the Kara Sea shelf has been carried out. Data on production, reserves and resources of gas, oil and condensate are given. The distribution of hydrocarbon reserves by the field size, by licensed and unlicensed fund and oil and gas complexes are shown. The ratio production and reserves growth over a 20-year period is shown. The reserves of the region’s industrial categories make it possible to increase the annual gas production to 650–750 billion m3, oil – up to 80 million tons. It is necessary to carry out a differentiated assessment of the initial total resources of hydrocarbons for the complex of geological and field parameters.","PeriodicalId":43752,"journal":{"name":"Georesursy","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49304910","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}
In order to replenish oil and gas reserves in the medium term and until the end of the century, it will be necessary to study new sediment complexes in promising regions of the country. One of these areas is the Kara Sea shelf, where large and giant gas condensate fields have already been discovered in the Cretaceous deposits, and the Pobeda field has been discovered on the eastern Prinovozemelsky shelf, with an oil deposit in the Lower-Middle Jurassic deposits and gas deposits in the Cretaceous. The article substantiates the prospects for the oil and gas potential of the Jurassic complex in the central part of the South Kara oil and gas region and the strategic need for geological exploration in the Jurassic and pre-Jurassic deposits of the region.
{"title":"Substantiation of the prospects to discover large oil and gas accumulations in the Jurassic and pre-Jurassian deposits on the Kara Sea shelf","authors":"V. Shuster, A. Dziublo","doi":"10.18599/grs.2023.1.8","DOIUrl":"https://doi.org/10.18599/grs.2023.1.8","url":null,"abstract":"In order to replenish oil and gas reserves in the medium term and until the end of the century, it will be necessary to study new sediment complexes in promising regions of the country. One of these areas is the Kara Sea shelf, where large and giant gas condensate fields have already been discovered in the Cretaceous deposits, and the Pobeda field has been discovered on the eastern Prinovozemelsky shelf, with an oil deposit in the Lower-Middle Jurassic deposits and gas deposits in the Cretaceous.\u0000The article substantiates the prospects for the oil and gas potential of the Jurassic complex in the central part of the South Kara oil and gas region and the strategic need for geological exploration in the Jurassic and pre-Jurassic deposits of the region.","PeriodicalId":43752,"journal":{"name":"Georesursy","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45007781","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}
The article presents the first data on rare earth mineralization in differentiated intrusions on the western slope of the Southern Urals. When studying the mineralogy of the rocks of the Shuida, Misaelga, Ishliy and Lysogorsk complexes, minerals of rare earth elements (monazite-(Ce) and allanite-(Ce), thorite (auerlite, cheralite)) and REE-bearing minerals (zirconolite-(Y) and epidote). A detailed analysis showed that igneous monazite-(Ce) and allanite-(Ce) are significantly different from the metamorphogenic analogues previously described in various structural-material complexes of the region. It is concluded that rare-earth mineral formation in rocks of basic/ultrabasic composition is due to differentiation of the melt in the magma chamber. Close temperatures of formation of minerals from different complexes (Ishliy complex – 958°C, Shuida complex – 950–954°C, Misaelga complex – 947–952°C) testify to the identity of the processes of formation of monazite-(Ce) and allanite-(Ce). opinion, the chemistry of the environment of mineral formation.
{"title":"First data on Th–REE mineralization in mafic-ultramafic igneous rocks of the western slope of the Southern Urals","authors":"S. G. Kovalev, S. S. Kovalev","doi":"10.18599/grs.2023.1.10","DOIUrl":"https://doi.org/10.18599/grs.2023.1.10","url":null,"abstract":"The article presents the first data on rare earth mineralization in differentiated intrusions on the western slope of the Southern Urals. When studying the mineralogy of the rocks of the Shuida, Misaelga, Ishliy and Lysogorsk complexes, minerals of rare earth elements (monazite-(Ce) and allanite-(Ce), thorite (auerlite, cheralite)) and REE-bearing minerals (zirconolite-(Y) and epidote). A detailed analysis showed that igneous monazite-(Ce) and allanite-(Ce) are significantly different from the metamorphogenic analogues previously described in various structural-material complexes of the region. It is concluded that rare-earth mineral formation in rocks of basic/ultrabasic composition is due to differentiation of the melt in the magma chamber. Close temperatures of formation of minerals from different complexes (Ishliy complex – 958°C, Shuida complex – 950–954°C, Misaelga complex – 947–952°C) testify to the identity of the processes of formation of monazite-(Ce) and allanite-(Ce). opinion, the chemistry of the environment of mineral formation.","PeriodicalId":43752,"journal":{"name":"Georesursy","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46718772","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}
The objective is the junction zone of the multilateral fishbone wellbores planned at the Yamalo-Nenets Autonomous District oilfield. Reservoir rock stability around the junction area is estimated with the help of the full coupled 3D poroelastic modeling. In order to determine the optimal fishbone location, the different cases with the various sidetrack inclination, parent well orientation along the maximal and minimal horizontal stresses with the condition of sidetracking in the rock with standard and reduced strength were simulated. The permissible depression and repression values were estimated for each fishbone configuration. For the cases with unstable junction the safe pressure drop and overbalance for drilling regime were determined. It was shown that in the case when mudcake is formed on the wellbores wall the pressure drop can be essentially decreased with fishbone stability retention.
{"title":"Estimation of the fishbone optimal orientation for a Yamalo-Nenets Autonomous District oilfield","authors":"A. Seryakov, M. Podberezhny","doi":"10.18599/grs.2023.1.13","DOIUrl":"https://doi.org/10.18599/grs.2023.1.13","url":null,"abstract":"The objective is the junction zone of the multilateral fishbone wellbores planned at the Yamalo-Nenets Autonomous District oilfield. Reservoir rock stability around the junction area is estimated with the help of the full coupled 3D poroelastic modeling. In order to determine the optimal fishbone location, the different cases with the various sidetrack inclination, parent well orientation along the maximal and minimal horizontal stresses with the condition of sidetracking in the rock with standard and reduced strength were simulated. The permissible depression and repression values were estimated for each fishbone configuration. For the cases with unstable junction the safe pressure drop and overbalance for drilling regime were determined. It was shown that in the case when mudcake is formed on the wellbores wall the pressure drop can be essentially decreased with fishbone stability retention.","PeriodicalId":43752,"journal":{"name":"Georesursy","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49455893","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}
Elena V. Oleinik, S. G. Kuzmenkov, M. Novikov, E. Oksenoyd, L. M. Zakharova, Elena Ikon, Violetta G. Popovskaya
The goal of the article was to analyze the mineral resource base of hydrocarbons of zones promising for the discovery of hydrocarbon deposits, located mainly on the periphery of the territory of the Khanty-Mansy Autonomous Okrug – Ugra. The second, no less important goal was to analyze the efficiency of exploration work in Ugra. Sites of subsurface resources were identified, for which an assessment of the resource base of pre-Jurassic formations and sedimentary cover was given. The most promising prospecting zones in terms of the state of reserves and resources are proposed for their inclusion in the licensing programs of the subsoil fund at the expense of all sources of funding. Information about the prospects for the preparation of «new» oil reserves through exploration drilling is given. This work is the result of the authors’ own research, including a retrospective analysis of unpublished material and available material of the V.I. Shpilman Research and Analytical Centre for the Rational Use of the Subsoil and the Department of Subsurface Management & Natural Resources of Khanty-Mansi Autonomous Okrug – Yugra geological and on this topic for the history of discovery and development of subsoil West Siberian oil and gas province.
{"title":"The resource base of hydrocarbons in the territory of Khanty-Mansi Autonomous Okrug – Yugra and ways of its development","authors":"Elena V. Oleinik, S. G. Kuzmenkov, M. Novikov, E. Oksenoyd, L. M. Zakharova, Elena Ikon, Violetta G. Popovskaya","doi":"10.18599/grs.2023.1.7","DOIUrl":"https://doi.org/10.18599/grs.2023.1.7","url":null,"abstract":"The goal of the article was to analyze the mineral resource base of hydrocarbons of zones promising for the discovery of hydrocarbon deposits, located mainly on the periphery of the territory of the Khanty-Mansy Autonomous Okrug – Ugra. The second, no less important goal was to analyze the efficiency of exploration work in Ugra. Sites of subsurface resources were identified, for which an assessment of the resource base of pre-Jurassic formations and sedimentary cover was given. The most promising prospecting zones in terms of the state of reserves and resources are proposed for their inclusion in the licensing programs of the subsoil fund at the expense of all sources of funding. Information about the prospects for the preparation of «new» oil reserves through exploration drilling is given.\u0000This work is the result of the authors’ own research, including a retrospective analysis of unpublished material and available material of the V.I. Shpilman Research and Analytical Centre for the Rational Use of the Subsoil and the Department of Subsurface Management & Natural Resources of Khanty-Mansi Autonomous Okrug – Yugra geological and on this topic for the history of discovery and development of subsoil West Siberian oil and gas province.","PeriodicalId":43752,"journal":{"name":"Georesursy","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45274114","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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