Pub Date : 2022-11-14DOI: 10.32454/0016-7762-2022-64-4-54-63
S. A. Guryanov
Introduction. In order to characterize the oil and gas potential of any area under exploration, its structural and tectonic evolution should be studied. In this paper, a structural and tectonic modelling of the Bering Sea is carried out.Aim. To identify the structural and tectonic characteristics of the Bering Sea by interpreting the results obtained during a geodynamic analysis of sedimentary basin formation, based on the tectonic and geodynamic paleoreconstructions and sedimentary basin modelling of the Bering Sea.Materials and methods. A structural and tectonic modelling of the Bering Sea sedimentary basins was carried out using contemporary methods of basin analysis and numerical geological modelling (PetroMod software, Schlumberger). Three-dimensional time-spatial structural-tectonic models of the Bering Sea were formed using the bottom structural maps of Pliocene-Quaternary deposits, near the Lower Miocene and Oligocene tops and along the acoustic basement bottom. Maps were digitalized and converted to grids (with a 500-m step), in which the discrepancies (intersections) were removed taking into account the available geological and geophysical data (seismogeological sections). The contemporary surface of sedimentary basins was constructed by the connection of bathymetric and topographic maps. The beginning and end time of sedimentary accumulation periods was determined in accordance with the international stratigraphic scale.Results. The performed study identified the sufficiently continuous development areas of the oceanic or suboceanic crust of deep-water (back-arc) basins, aged from the Upper Jurassic-Cretaceous to the Cenozoic and repeatedly affected by the subsequent phases of the tectonic and magmatic activation; development belts of the Cretaceous-Cenozoic block-magmatic basement of island arcs, locally including reformed basement blocks of an older, Paleozoic or Cimmerian, consolidation; extensive depth-differentiated alpine/newest (syn-oceanic) shelf platforms, occassionally partially destroyed due to the latest destruction, including blocks or large blocks of Pre-Cambrian or Paleozoic relatively rigid massifs in the structure of their base.Conclusion. The modelling results indicate the deeply submerged West Anadyr, East Anadyr and Central Anadyr basins to be possible depocentres with their own hydrocarbon generation centres.
{"title":"Structural and tectonic conditions for the development of the Bering Sea sedimentary basin","authors":"S. A. Guryanov","doi":"10.32454/0016-7762-2022-64-4-54-63","DOIUrl":"https://doi.org/10.32454/0016-7762-2022-64-4-54-63","url":null,"abstract":"Introduction. In order to characterize the oil and gas potential of any area under exploration, its structural and tectonic evolution should be studied. In this paper, a structural and tectonic modelling of the Bering Sea is carried out.Aim. To identify the structural and tectonic characteristics of the Bering Sea by interpreting the results obtained during a geodynamic analysis of sedimentary basin formation, based on the tectonic and geodynamic paleoreconstructions and sedimentary basin modelling of the Bering Sea.Materials and methods. A structural and tectonic modelling of the Bering Sea sedimentary basins was carried out using contemporary methods of basin analysis and numerical geological modelling (PetroMod software, Schlumberger). Three-dimensional time-spatial structural-tectonic models of the Bering Sea were formed using the bottom structural maps of Pliocene-Quaternary deposits, near the Lower Miocene and Oligocene tops and along the acoustic basement bottom. Maps were digitalized and converted to grids (with a 500-m step), in which the discrepancies (intersections) were removed taking into account the available geological and geophysical data (seismogeological sections). The contemporary surface of sedimentary basins was constructed by the connection of bathymetric and topographic maps. The beginning and end time of sedimentary accumulation periods was determined in accordance with the international stratigraphic scale.Results. The performed study identified the sufficiently continuous development areas of the oceanic or suboceanic crust of deep-water (back-arc) basins, aged from the Upper Jurassic-Cretaceous to the Cenozoic and repeatedly affected by the subsequent phases of the tectonic and magmatic activation; development belts of the Cretaceous-Cenozoic block-magmatic basement of island arcs, locally including reformed basement blocks of an older, Paleozoic or Cimmerian, consolidation; extensive depth-differentiated alpine/newest (syn-oceanic) shelf platforms, occassionally partially destroyed due to the latest destruction, including blocks or large blocks of Pre-Cambrian or Paleozoic relatively rigid massifs in the structure of their base.Conclusion. The modelling results indicate the deeply submerged West Anadyr, East Anadyr and Central Anadyr basins to be possible depocentres with their own hydrocarbon generation centres.","PeriodicalId":33343,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Geologiia i razvedka","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79153174","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 : 2022-11-14DOI: 10.32454/0016-7762-2022-64-4-81-90
V. Neskoromnykh, I. Komarovsky, P. G. Petenev
Background. During the drilling process, all wells undergo distortion to a greater or lesser extent. In a number of cases, the distortion of wells causes no significant effect on the results of drilling. Therefore, the actual position of the well shaft and bottom coordinates are not determined. This applies to mapping, engineering-geological, blasting and other wells having a shallow depth. During deep-well drilling, especially at the final exploration stages, issues of drilling wells according to design trajectories acquire a greater importance and significant resources for their solution. The application of technical means for changing the direction of the well (whipstocks) is associated with a number of problems related to tripping operations.Aim. To reduce the time input needed for adjusting drilling trajectories by excluding tripping operations when conducting controlled drilling works.Materials and methods. The operating principles of various types of deflectors were studied. The results of investigating deflectors of continuous action are presented, along with means for adjusting drilling trajectories and optimizing the time required for controlled drilling works.Results. The conducted analysis revealed the direct proportion between the time spent on tripping operations and the costs incurred in controlled drilling.Conclusion. In order to reduce the time input needed for tripping operations during drilling, technological means should be developed to exclude them from the entire process.
{"title":"Development of a technology and design of a removable whipstock assembly for drilling exploration wells using wireline core barrels","authors":"V. Neskoromnykh, I. Komarovsky, P. G. Petenev","doi":"10.32454/0016-7762-2022-64-4-81-90","DOIUrl":"https://doi.org/10.32454/0016-7762-2022-64-4-81-90","url":null,"abstract":"Background. During the drilling process, all wells undergo distortion to a greater or lesser extent. In a number of cases, the distortion of wells causes no significant effect on the results of drilling. Therefore, the actual position of the well shaft and bottom coordinates are not determined. This applies to mapping, engineering-geological, blasting and other wells having a shallow depth. During deep-well drilling, especially at the final exploration stages, issues of drilling wells according to design trajectories acquire a greater importance and significant resources for their solution. The application of technical means for changing the direction of the well (whipstocks) is associated with a number of problems related to tripping operations.Aim. To reduce the time input needed for adjusting drilling trajectories by excluding tripping operations when conducting controlled drilling works.Materials and methods. The operating principles of various types of deflectors were studied. The results of investigating deflectors of continuous action are presented, along with means for adjusting drilling trajectories and optimizing the time required for controlled drilling works.Results. The conducted analysis revealed the direct proportion between the time spent on tripping operations and the costs incurred in controlled drilling.Conclusion. In order to reduce the time input needed for tripping operations during drilling, technological means should be developed to exclude them from the entire process.","PeriodicalId":33343,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Geologiia i razvedka","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72859498","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 : 2022-11-14DOI: 10.32454/0016-7762-2022-64-4-91-100
B. A. Ovezov, K. O. Shcherbakova, L. R. Kalendarova, P. A. Romanov, D. A. Kuznetsova
Introduction. Torsional vibrations caused by drilling using a polycrystalline diamond compact (PDC) bit are analysed using wellbore data obtained under various drilling modes. The drilling caused by torsional vibrations are analysed. Two types of torsional vibrations, including those caused by the cutting action of a bit and by frictional forces.Aim. To investigate the induction of torsional vibrations as a result of rock destruction by PDC bits.Materials and methods. The research methodology was based on “Richard-Germay-Detournay” and “Tian-Detournay” bit designs and methods for reducing the critical effects of torsional vibrations induced by PDC bits during rock destruction.Results. Statistical analysis has shown that the drilling efficiency of the bit (DE) correlates well with the occurrence of torsion vibrations caused by the bit. The aggressiveness of the cutting structure of the PDC bit can be represented by an average DE rating. If the PDC bit is designed so that its DE exceeds a critical value, then the occurrence of torsion vibrations on the bit is unlikely during drilling.Conclusion. When drilling with a polycrystalline diamond PCD bit, two types of vibrations occur. If torsional vibration occurs due to the cutting action of the bit, then the fight against this process is focused on the design of the bit and operational parameters, the load on the bit and the speed of rotation of the bit. If the torsional vibration is caused by friction, vibration reduction methods should be focused on changing the design of the BHA and the drill string or the profile of the well. Therefore, it is very important to determine whether the torsional vibration is caused by the friction force of the elements, the cutting action of the bit, or both. In drilling, it is always necessary to search for the maximum penetration speed by changing the load on the bit under specified drilling conditions. To do this, it is necessary to evaluate the drilling efficiency of the DE bit, therefore, this article has evaluated the parameter depending on the size of the bit, which will determine the critical value of the drilling efficiency parameter.
{"title":"Reducing critical effects of torsional vibrations induced by PDC bits during rock destruction","authors":"B. A. Ovezov, K. O. Shcherbakova, L. R. Kalendarova, P. A. Romanov, D. A. Kuznetsova","doi":"10.32454/0016-7762-2022-64-4-91-100","DOIUrl":"https://doi.org/10.32454/0016-7762-2022-64-4-91-100","url":null,"abstract":"Introduction. Torsional vibrations caused by drilling using a polycrystalline diamond compact (PDC) bit are analysed using wellbore data obtained under various drilling modes. The drilling caused by torsional vibrations are analysed. Two types of torsional vibrations, including those caused by the cutting action of a bit and by frictional forces.Aim. To investigate the induction of torsional vibrations as a result of rock destruction by PDC bits.Materials and methods. The research methodology was based on “Richard-Germay-Detournay” and “Tian-Detournay” bit designs and methods for reducing the critical effects of torsional vibrations induced by PDC bits during rock destruction.Results. Statistical analysis has shown that the drilling efficiency of the bit (DE) correlates well with the occurrence of torsion vibrations caused by the bit. The aggressiveness of the cutting structure of the PDC bit can be represented by an average DE rating. If the PDC bit is designed so that its DE exceeds a critical value, then the occurrence of torsion vibrations on the bit is unlikely during drilling.Conclusion. When drilling with a polycrystalline diamond PCD bit, two types of vibrations occur. If torsional vibration occurs due to the cutting action of the bit, then the fight against this process is focused on the design of the bit and operational parameters, the load on the bit and the speed of rotation of the bit. If the torsional vibration is caused by friction, vibration reduction methods should be focused on changing the design of the BHA and the drill string or the profile of the well. Therefore, it is very important to determine whether the torsional vibration is caused by the friction force of the elements, the cutting action of the bit, or both. In drilling, it is always necessary to search for the maximum penetration speed by changing the load on the bit under specified drilling conditions. To do this, it is necessary to evaluate the drilling efficiency of the DE bit, therefore, this article has evaluated the parameter depending on the size of the bit, which will determine the critical value of the drilling efficiency parameter.","PeriodicalId":33343,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Geologiia i razvedka","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86334949","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 : 2022-11-14DOI: 10.32454/0016-7762-2022-64-4-64-80
U. S. Serikova, P. A. Romanov
Introduction. The conditions of formation and distribution of accumulations of traps and deposits in the Caspian region are considered.Goal. Assessment of conditions for the formation and distribution of traps and deposits in the Caspian region.Materials and methods. Statistical generalization and systematization of data and materials partially borrowed from reference literature, stock sources, field data and published works [2, 5, 7].Results. As a result, mainly in platform shelf conditions and in local areas of relative stabilization or weak oscillatory movements, the formation of lithological-stratigraphic and combined traps can be associated with a variety of accumulative and erosive-accumulative forms of coastal and isolated shallow waters remote from the coast. Finally, separate groups of traps are formed during periods of relative geodynamic stabilization, in water areas where conditions for carbonation accumulation and the formation of biogenic structures are provided.
{"title":"Assessment of conditions for the formation and distribution of traps and deposits in the Caspian region","authors":"U. S. Serikova, P. A. Romanov","doi":"10.32454/0016-7762-2022-64-4-64-80","DOIUrl":"https://doi.org/10.32454/0016-7762-2022-64-4-64-80","url":null,"abstract":"Introduction. The conditions of formation and distribution of accumulations of traps and deposits in the Caspian region are considered.Goal. Assessment of conditions for the formation and distribution of traps and deposits in the Caspian region.Materials and methods. Statistical generalization and systematization of data and materials partially borrowed from reference literature, stock sources, field data and published works [2, 5, 7].Results. As a result, mainly in platform shelf conditions and in local areas of relative stabilization or weak oscillatory movements, the formation of lithological-stratigraphic and combined traps can be associated with a variety of accumulative and erosive-accumulative forms of coastal and isolated shallow waters remote from the coast. Finally, separate groups of traps are formed during periods of relative geodynamic stabilization, in water areas where conditions for carbonation accumulation and the formation of biogenic structures are provided.","PeriodicalId":33343,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Geologiia i razvedka","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89441198","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 : 2022-11-14DOI: 10.32454/0016-7762-2022-64-4-22-39
V. A. Utenkov, A. V. Turov
Introduction. The 60 m wide quartz dolerite stock, opened by a quarry, is heavily alternated by secondary processes, which makes it difficult to study.Aim. Reconstruction of primary magmatic structures and determination of conditions conductive to their crystallization and late alterations.Materials and methods. In order to assess the conditions of magmatic crystallization and massive late alterations, thin sections of selected samples were studied and chemical analysis of rocks was performed.Results. The stock was established to have a primary double structure with a wide centre and a narrow annular border (1 m). This is due to the contraction and reintroduction of a melt along the edge of the stock. The melt inside the ring is adiabatically heated to 1175° and the water pressure drops to 0.5 kbar, as compared to the centre (900° and 2 kbar). Therefore, the centre and edge have a different primary composition with plagioclase (An50), qartz, magnetite and glass (5%) in the centre and early plagioclase, quartz, pyroxene, plagioclase microlites, miarolitic cavities and glass (30–40%) at the border. Final hardening and new contraction lead to the formation of radial cracks in the ring. The mechanical work, spent on their formation, sharply reduces the level of internal energy, while the expansion of cracks leads both to adiabatic cooling of the solution in the border zone of the stock and massive low-temperature metasomatosis (260–132°C). The reactions proceed diffusionally when the solution is stagnant with the massive formation of pseudomorphoses. Due to a decrease in the volume of reacting solid phases and an increase in the total porosity under the conditions of dominant decompression, part of the silica is removed upwards. The centre is cooled slowly with the preservation of relics and their successive alteration from acid to alkaline ones. Initial acid reactions are provided by the complete dissociation of a weak carbonic acid, followed by strong acid and final alkaline reactions provided by chlorine and incomplete dissociation of carbonic acid, respectively.
{"title":"Reconstructing the magmatic crystallization conditions and alteration processes of quartz dolerites of the Kremennaya mountain stock (Mountain Crimea)","authors":"V. A. Utenkov, A. V. Turov","doi":"10.32454/0016-7762-2022-64-4-22-39","DOIUrl":"https://doi.org/10.32454/0016-7762-2022-64-4-22-39","url":null,"abstract":"Introduction. The 60 m wide quartz dolerite stock, opened by a quarry, is heavily alternated by secondary processes, which makes it difficult to study.Aim. Reconstruction of primary magmatic structures and determination of conditions conductive to their crystallization and late alterations.Materials and methods. In order to assess the conditions of magmatic crystallization and massive late alterations, thin sections of selected samples were studied and chemical analysis of rocks was performed.Results. The stock was established to have a primary double structure with a wide centre and a narrow annular border (1 m). This is due to the contraction and reintroduction of a melt along the edge of the stock. The melt inside the ring is adiabatically heated to 1175° and the water pressure drops to 0.5 kbar, as compared to the centre (900° and 2 kbar). Therefore, the centre and edge have a different primary composition with plagioclase (An50), qartz, magnetite and glass (5%) in the centre and early plagioclase, quartz, pyroxene, plagioclase microlites, miarolitic cavities and glass (30–40%) at the border. Final hardening and new contraction lead to the formation of radial cracks in the ring. The mechanical work, spent on their formation, sharply reduces the level of internal energy, while the expansion of cracks leads both to adiabatic cooling of the solution in the border zone of the stock and massive low-temperature metasomatosis (260–132°C). The reactions proceed diffusionally when the solution is stagnant with the massive formation of pseudomorphoses. Due to a decrease in the volume of reacting solid phases and an increase in the total porosity under the conditions of dominant decompression, part of the silica is removed upwards. The centre is cooled slowly with the preservation of relics and their successive alteration from acid to alkaline ones. Initial acid reactions are provided by the complete dissociation of a weak carbonic acid, followed by strong acid and final alkaline reactions provided by chlorine and incomplete dissociation of carbonic acid, respectively.","PeriodicalId":33343,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Geologiia i razvedka","volume":"84 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87403533","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 : 2022-11-14DOI: 10.32454/0016-7762-2022-64-4-40-53
A. Osipov, R. Mustaev, A. S. Monakova, L. Bondareva, K. I. Dantsova
Background. One of the key approaches to reducing the long-term effects of global warming consists in capturing, transporting and disposing and/or burial of carbon dioxide. The Russian Federation is one of the leaders in carbon dioxide emissions. At the same time, having great potential in the field of CO2 burial in the subsoil, there are currently no industrial projects for capturing, transporting and utilizing and (or) storing CO2.Aim. To study of the retention mechanisms and burial features of carbon dioxide within various geological formations.Materials and methods. Based on the analysis of extensive material, a review of existing options for the utilization and storage of carbon dioxide in the bowels has been prepared.Results. Burial assumes CO2 injection into rock layers, which are capable of its absorption and safe long-term retention. Various options for the burial of carbon dioxide in the Earth interior are considered. The main ones are layers of depleted hydrocarbon deposits and mineralized aquifers. Also, carbon dioxide storage can be carried out in undeveloped coal seams, saline and basalt formations. The basic mechanisms of retention, necessary geological conditions and characteristics of potential reservoirs are described. The risks and uncertainties of burial in various geological formations are analyzed. Examples of the world’s most significant projects for the utilization and disposal of CO2 in the Earth interior are given. Such as Sleipner in Norway, In-Salah in Algeria, etc. It is indicated that the potential of Russia in the field of utilization and (or) disposal of carbon dioxide in the bowels is quite high, but it has not been fully assessed.Conclusion. At present, the most studied and tested options for the utilization and storage of carbon dioxide in the Earth interior are as follows: the use of carbon dioxide as an agent in the methods of enhanced oil recovery, the storage of CO2 in the strata of depleted deposits of hydrocarbon raw materials and in mineralized aquifers.It is necessary to concentrate efforts on a purposeful geological study of various conditions for storing carbon dioxide in the Russian Earth interior, as well as on the development of uniform requirements for the geological parameters of CO2 underground storage facilities.
{"title":"Mechanisms and options of the utilization and burial of carbon dioxide in the earth interior","authors":"A. Osipov, R. Mustaev, A. S. Monakova, L. Bondareva, K. I. Dantsova","doi":"10.32454/0016-7762-2022-64-4-40-53","DOIUrl":"https://doi.org/10.32454/0016-7762-2022-64-4-40-53","url":null,"abstract":"Background. One of the key approaches to reducing the long-term effects of global warming consists in capturing, transporting and disposing and/or burial of carbon dioxide. The Russian Federation is one of the leaders in carbon dioxide emissions. At the same time, having great potential in the field of CO2 burial in the subsoil, there are currently no industrial projects for capturing, transporting and utilizing and (or) storing CO2.Aim. To study of the retention mechanisms and burial features of carbon dioxide within various geological formations.Materials and methods. Based on the analysis of extensive material, a review of existing options for the utilization and storage of carbon dioxide in the bowels has been prepared.Results. Burial assumes CO2 injection into rock layers, which are capable of its absorption and safe long-term retention. Various options for the burial of carbon dioxide in the Earth interior are considered. The main ones are layers of depleted hydrocarbon deposits and mineralized aquifers. Also, carbon dioxide storage can be carried out in undeveloped coal seams, saline and basalt formations. The basic mechanisms of retention, necessary geological conditions and characteristics of potential reservoirs are described. The risks and uncertainties of burial in various geological formations are analyzed. Examples of the world’s most significant projects for the utilization and disposal of CO2 in the Earth interior are given. Such as Sleipner in Norway, In-Salah in Algeria, etc. It is indicated that the potential of Russia in the field of utilization and (or) disposal of carbon dioxide in the bowels is quite high, but it has not been fully assessed.Conclusion. At present, the most studied and tested options for the utilization and storage of carbon dioxide in the Earth interior are as follows: the use of carbon dioxide as an agent in the methods of enhanced oil recovery, the storage of CO2 in the strata of depleted deposits of hydrocarbon raw materials and in mineralized aquifers.It is necessary to concentrate efforts on a purposeful geological study of various conditions for storing carbon dioxide in the Russian Earth interior, as well as on the development of uniform requirements for the geological parameters of CO2 underground storage facilities.","PeriodicalId":33343,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Geologiia i razvedka","volume":"142 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77874514","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 : 2022-10-17DOI: 10.32454/0016-7762-2022-64-2-57-67
V. Okrugin, E. D. Skilskaia, S. V. Moskaleva
Background. The article presents the first results of a mineralogical and petrographic study of the pumice of the Sarychev Peak volcano, Matua island, the Central Kuril islands.Aim. To reconstruct the compositions of magmatic melts of a caldera-forming eruption of the proto-Matua volcano.Materials and methods. The main research methods included an X-ray fluorescence spectral analysis to determine the content of petrogenic, rare and trace elements, as well as an electron-probe microanalysis to study variations in the chemical composition of mineral inclusions of pumice.Results and conclusion. According to the content of SiO2 and the sum of alkalis, the composition of pumice varies from andesibasaltes (SiO2 = 55.94 wt.%) to dacites (SiO2 = 67.70 wt.%). According to the content of K2O, pumice can be classified as a moderate-potassium series of rocks. The inclusion minerals represented by plagioclase, amphibole, apatite and Fe-Ti oxides were crystallized at the same time from a water-saturated magmatic melt at a pressure of about 1.5–2.2 kbar. The igneous melt was enriched with volatile components of H2O, CO2, S, F and Cl.
{"title":"Petrochemistry and mineralogy of pumice from the Sarychev Peak Volcano, Matua Island, Central Kuril Island","authors":"V. Okrugin, E. D. Skilskaia, S. V. Moskaleva","doi":"10.32454/0016-7762-2022-64-2-57-67","DOIUrl":"https://doi.org/10.32454/0016-7762-2022-64-2-57-67","url":null,"abstract":"Background. The article presents the first results of a mineralogical and petrographic study of the pumice of the Sarychev Peak volcano, Matua island, the Central Kuril islands.Aim. To reconstruct the compositions of magmatic melts of a caldera-forming eruption of the proto-Matua volcano.Materials and methods. The main research methods included an X-ray fluorescence spectral analysis to determine the content of petrogenic, rare and trace elements, as well as an electron-probe microanalysis to study variations in the chemical composition of mineral inclusions of pumice.Results and conclusion. According to the content of SiO2 and the sum of alkalis, the composition of pumice varies from andesibasaltes (SiO2 = 55.94 wt.%) to dacites (SiO2 = 67.70 wt.%). According to the content of K2O, pumice can be classified as a moderate-potassium series of rocks. The inclusion minerals represented by plagioclase, amphibole, apatite and Fe-Ti oxides were crystallized at the same time from a water-saturated magmatic melt at a pressure of about 1.5–2.2 kbar. The igneous melt was enriched with volatile components of H2O, CO2, S, F and Cl.","PeriodicalId":33343,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Geologiia i razvedka","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77217715","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 : 2022-10-17DOI: 10.32454/0016-7762-2022-64-2-68-79
T. Ryashchenko, E. A. Maslov, E. Bryzhak, S. I. Shtel’makh
Background. The results of an engineering-geological study of rock soils and the products of their fault zones are considered on the example of samples selected in the sides of the Albazinskoe gold-bearing deposit located in the north of the Khabarovsk Krai.Aim. To develop and implement a methodological approach, which includes laboratory determinations of the velocity of propagation of longitudinal seismic waves (“seismic speed”) using a “Pulsar-2.2” unit (methods of continuous and through sounding), as well as density, porosity and water absorption determinations along with obtaining information about the types of microstructure and microtexture, the mineral composition and mineral alteration features under the influence of metamorphism (using petrographical thin sections).Materials and methods. For the collected rock soil samples the relationship between seismic velocity and physical properties indicators was evaluated (R-type cluster analysis programme). The products of fractural zones were studied in a laboratory according to a specially-developed methodological approach: extended (black clay) and reduced (crushed stone formations with debris). The microelement composition of the clay and gravel of argillites was determined for the first time, and the level of their pollution by toxic microelements (Zc index) was evaluated.Results. On the basis of quantitative assessment of the relationship between indicators of rocky soils various properties identified using the cluster analysis program, an “anomalous” conclusion is obtained about the absence of the rock soil density effect on seismic properties, which can be explained by the textural and structural features, as well as by mineral composition and the consequences of metamorphism (cataclastic and blastogenetic features recorded on the microscale in thin sections).Conclusion. The proposed methodological approach can be recommended for further studies of seismic, strength and physical properties of rocky soils during seismological and engineering-seismological studies of various territories.
{"title":"An engineering-geological study of rock soils and the products of their fracture zones (Albazinskoe deposit, north Khabarovsk Krai)","authors":"T. Ryashchenko, E. A. Maslov, E. Bryzhak, S. I. Shtel’makh","doi":"10.32454/0016-7762-2022-64-2-68-79","DOIUrl":"https://doi.org/10.32454/0016-7762-2022-64-2-68-79","url":null,"abstract":"Background. The results of an engineering-geological study of rock soils and the products of their fault zones are considered on the example of samples selected in the sides of the Albazinskoe gold-bearing deposit located in the north of the Khabarovsk Krai.Aim. To develop and implement a methodological approach, which includes laboratory determinations of the velocity of propagation of longitudinal seismic waves (“seismic speed”) using a “Pulsar-2.2” unit (methods of continuous and through sounding), as well as density, porosity and water absorption determinations along with obtaining information about the types of microstructure and microtexture, the mineral composition and mineral alteration features under the influence of metamorphism (using petrographical thin sections).Materials and methods. For the collected rock soil samples the relationship between seismic velocity and physical properties indicators was evaluated (R-type cluster analysis programme). The products of fractural zones were studied in a laboratory according to a specially-developed methodological approach: extended (black clay) and reduced (crushed stone formations with debris). The microelement composition of the clay and gravel of argillites was determined for the first time, and the level of their pollution by toxic microelements (Zc index) was evaluated.Results. On the basis of quantitative assessment of the relationship between indicators of rocky soils various properties identified using the cluster analysis program, an “anomalous” conclusion is obtained about the absence of the rock soil density effect on seismic properties, which can be explained by the textural and structural features, as well as by mineral composition and the consequences of metamorphism (cataclastic and blastogenetic features recorded on the microscale in thin sections).Conclusion. The proposed methodological approach can be recommended for further studies of seismic, strength and physical properties of rocky soils during seismological and engineering-seismological studies of various territories.","PeriodicalId":33343,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Geologiia i razvedka","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89624033","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 : 2022-10-17DOI: 10.32454/0016-7762-2022-64-2-92-99
S. Vlasenko
Background. In hydrogeological terms, the territory of the Barents-Kara shelf has not been studied in sufficient detail. The data on its hydrogeological zoning are based mainly on the results of research undertaken in the 1970s, when attempts were made to isolate artesian shelf basins according to a set of hydrogeological indicators of oil and gas content. Currently, the position of the basin boundaries can be adjusted using current data from oil and gas and geological zoning and the hydrogeological testing of wells.Aim. To conduct the hydrogeological zoning of the territory of the southern part of the Kara Sea and the north of the West Siberian geosyneclise, including oil and gas structures — the South Kara syneclise and the Yamal-Gydan megasaddle, as well as to carry out a chemical analysis of groundwater of the Jurassic-Cretaceous aquifer complexes composing the sediments of the sedimentary cover of the West Siberian sedimentary basin.Materials and methods. A cartographic method was used to analyze earlier maps and schemes of hydrogeological and oil and gas geological zoning of the Russian sector of the continental slope of the Arctic Ocean, and then to determine the boundaries of the identified artesian basins. For a chemical analysis of groundwater, the results of hydrogeological testing of wells drilled at the Zapolyarnoye oil and gas condensate field were used.Results. The boundaries of two artesian basins — the South Kara submarine and the Yamal-Gydan semi-marine, corresponding to the same-name oil and gas prospective structures and having the same geological structure, were determined. Both basins are characterised by the presence of the main aquifer complexes of the Mesozoic hydrogeological floor of Western Siberia. When studying the composition of groundwater of the Zapolyarnoye deposit, it was found that the types of water change regularly with depth and an increase in the content of the hydrocarbonate ion due to the possible migration of fluids enriched with carbonic acid dioxide from the rocks of the foundation.Conclusion. The determined basins are characterised by a wide distribution of oil and gas-bearing structures and the exploration maturity of the sedimentary cover. Both artesian basins are characterized by the distribution of groundwater of a unified composition and genesis.
{"title":"Hydrogeology of the artesian basins of the southern part of the Kara sea and Yamal-Gydansk megasaddle","authors":"S. Vlasenko","doi":"10.32454/0016-7762-2022-64-2-92-99","DOIUrl":"https://doi.org/10.32454/0016-7762-2022-64-2-92-99","url":null,"abstract":"Background. In hydrogeological terms, the territory of the Barents-Kara shelf has not been studied in sufficient detail. The data on its hydrogeological zoning are based mainly on the results of research undertaken in the 1970s, when attempts were made to isolate artesian shelf basins according to a set of hydrogeological indicators of oil and gas content. Currently, the position of the basin boundaries can be adjusted using current data from oil and gas and geological zoning and the hydrogeological testing of wells.Aim. To conduct the hydrogeological zoning of the territory of the southern part of the Kara Sea and the north of the West Siberian geosyneclise, including oil and gas structures — the South Kara syneclise and the Yamal-Gydan megasaddle, as well as to carry out a chemical analysis of groundwater of the Jurassic-Cretaceous aquifer complexes composing the sediments of the sedimentary cover of the West Siberian sedimentary basin.Materials and methods. A cartographic method was used to analyze earlier maps and schemes of hydrogeological and oil and gas geological zoning of the Russian sector of the continental slope of the Arctic Ocean, and then to determine the boundaries of the identified artesian basins. For a chemical analysis of groundwater, the results of hydrogeological testing of wells drilled at the Zapolyarnoye oil and gas condensate field were used.Results. The boundaries of two artesian basins — the South Kara submarine and the Yamal-Gydan semi-marine, corresponding to the same-name oil and gas prospective structures and having the same geological structure, were determined. Both basins are characterised by the presence of the main aquifer complexes of the Mesozoic hydrogeological floor of Western Siberia. When studying the composition of groundwater of the Zapolyarnoye deposit, it was found that the types of water change regularly with depth and an increase in the content of the hydrocarbonate ion due to the possible migration of fluids enriched with carbonic acid dioxide from the rocks of the foundation.Conclusion. The determined basins are characterised by a wide distribution of oil and gas-bearing structures and the exploration maturity of the sedimentary cover. Both artesian basins are characterized by the distribution of groundwater of a unified composition and genesis.","PeriodicalId":33343,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Geologiia i razvedka","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79121261","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 : 2022-10-17DOI: 10.32454/0016-7762-2022-64-2-8-17
Yu. P. Panov
Russia’ national Programme for the Reproduction of the Mineral Resource Base cannot be implemented successfully without coordination between the quality of mining specialist training and the pace of developing mineral resources both in terms of solving methodological issues and providing stable funding.The Sergo Ordzhonikidze Russian State Geological Exploration University carries out its activities aimed at training specialists for organizations of the Federal Agency for Subsoil Use. This direction is elucidated in the Programme and Development Strategy of the University for 2023–2027.
{"title":"Development Programme of Sergo Ordzhonikidze Russian State University for Geological Prospecting (MRGI) for 2023—2027","authors":"Yu. P. Panov","doi":"10.32454/0016-7762-2022-64-2-8-17","DOIUrl":"https://doi.org/10.32454/0016-7762-2022-64-2-8-17","url":null,"abstract":"Russia’ national Programme for the Reproduction of the Mineral Resource Base cannot be implemented successfully without coordination between the quality of mining specialist training and the pace of developing mineral resources both in terms of solving methodological issues and providing stable funding.The Sergo Ordzhonikidze Russian State Geological Exploration University carries out its activities aimed at training specialists for organizations of the Federal Agency for Subsoil Use. This direction is elucidated in the Programme and Development Strategy of the University for 2023–2027.","PeriodicalId":33343,"journal":{"name":"Izvestiia vysshikh uchebnykh zavedenii Geologiia i razvedka","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87697034","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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