Pub Date : 2022-10-30DOI: 10.37878/2708-0080/2022-5.05
D. Urmanova, D. D. Humphrey
This article presents a study of the stratigraphic development of the Devonian-carboniferous complex of the southern side of the Caspian basin, in which a comprehensive study of sedimentary formations of the subsalt complex and the creation of a stratigraphic model of the Late Paleozoic stage of evolution of the southern Caspian sedimentary basin was carried out based on a refined correlation scheme by Abilkhasimov (2015), with the inclusion of generalized data on the structures of Ansagan and Maksat. The basis for the development of a stratigraphic model in the Late Paleozoic of the Coastal zone of carbonate structures in the south of the Caspian sedimentary basin is the classical structural and formation analysis, which reflects the main features: stratigraphy, tectonics, lithological composition, sedimentation conditions, sediment thickness.
{"title":"STRATIGRAPHIC DEVELOPMENT OF THE DEVONIAN-CARBONIFEROUS COMPLEX OF THE SOUTHERN SIDE OF THE CASPIAN DEEP","authors":"D. Urmanova, D. D. Humphrey","doi":"10.37878/2708-0080/2022-5.05","DOIUrl":"https://doi.org/10.37878/2708-0080/2022-5.05","url":null,"abstract":"This article presents a study of the stratigraphic development of the Devonian-carboniferous complex of the southern side of the Caspian basin, in which a comprehensive study of sedimentary formations of the subsalt complex and the creation of a stratigraphic model of the Late Paleozoic stage of evolution of the southern Caspian sedimentary basin was carried out based on a refined correlation scheme by Abilkhasimov (2015), with the inclusion of generalized data on the structures of Ansagan and Maksat. The basis for the development of a stratigraphic model in the Late Paleozoic of the Coastal zone of carbonate structures in the south of the Caspian sedimentary basin is the classical structural and formation analysis, which reflects the main features: stratigraphy, tectonics, lithological composition, sedimentation conditions, sediment thickness.","PeriodicalId":272594,"journal":{"name":"Neft i gaz","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126956913","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 : 2022-10-30DOI: 10.37878/2708-0080/2022-5.08
N. Suleimenov
Experimental studies were carried out to determine the effect of inert fillers on the filtration properties of clay cakes during their formation. The sequence of experiments corresponds to the sequence of stages: formation of the main structure of the filter cake (simulation of the opening process by drilling), treatment of the bottomhole zone to restore the initial permeability (for example, during chemical destruction of the filter cakes) and washing out of process fluid filtrates from the bottomhole zone into the well. The solid phase in the drilling fluid can be represented by both structure-forming clay particles and fillers (barite, crushed cuttings, bridging agents, etc.). Moreover, fillers can have individual particles of a size of a colloidal degree of dispersion and significantly affect the filtration performance of drilling suspensions. It is especially important to evaluate the influence of the composition of the solid phase of the clay suspension on the filtration properties at the stage of formation of the main structure of the filter cake. This stage is characterized by a non-stationary filtration process. In essence, the bulk of the studies of filtration processes is carried out in this mode. In our case, it is necessary to determine the dependence of the filtration index of solutions Пр on the composition of the solid phase. In the course of experimental studies, it was confirmed that subsequent filtration through the cakes formed at stage 1 equally depends on the magnitude and nature of the drawdown application, as in stage 1, as well as on the permeability of the filter cake and the clogging zone. Therefore, the research methodology at stage 2 required supplementing experiments with the formation and modification of filter cakes during filtration through permeable sand packs.
{"title":"DEVELOPMENT OF OPTIMAL COMPOSITION OF DRILLING FLUID FILLER FOR OPEN HOLE WELL COMPLETION","authors":"N. Suleimenov","doi":"10.37878/2708-0080/2022-5.08","DOIUrl":"https://doi.org/10.37878/2708-0080/2022-5.08","url":null,"abstract":"Experimental studies were carried out to determine the effect of inert fillers on the filtration properties of clay cakes during their formation. The sequence of experiments corresponds to the sequence of stages: formation of the main structure of the filter cake (simulation of the opening process by drilling), treatment of the bottomhole zone to restore the initial permeability (for example, during chemical destruction of the filter cakes) and washing out of process fluid filtrates from the bottomhole zone into the well. The solid phase in the drilling fluid can be represented by both structure-forming clay particles and fillers (barite, crushed cuttings, bridging agents, etc.). Moreover, fillers can have individual particles of a size of a colloidal degree of dispersion and significantly affect the filtration performance of drilling suspensions. It is especially important to evaluate the influence of the composition of the solid phase of the clay suspension on the filtration properties at the stage of formation of the main structure of the filter cake. This stage is characterized by a non-stationary filtration process. In essence, the bulk of the studies of filtration processes is carried out in this mode. In our case, it is necessary to determine the dependence of the filtration index of solutions Пр on the composition of the solid phase. In the course of experimental studies, it was confirmed that subsequent filtration through the cakes formed at stage 1 equally depends on the magnitude and nature of the drawdown application, as in stage 1, as well as on the permeability of the filter cake and the clogging zone. Therefore, the research methodology at stage 2 required supplementing experiments with the formation and modification of filter cakes during filtration through permeable sand packs.","PeriodicalId":272594,"journal":{"name":"Neft i gaz","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126328554","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 : 2022-10-30DOI: 10.37878/2708-0080/2022-5.02
A. Zhanserkeyeva
The identification of promising areas of exploration to develop the resource base of the Aktobe region is an urgent issue due to the gradual depletion of proven hydrocarbon reserves. The subsalt complex of the Aktobe Uralian Foreland is a prospective object, where prospecting and exploration work was carried out unevenly in the 1950s and 1980s, and most of the seismic survey data of 2004-2008 are low-informative. The subsalt complex of the studied area has been poorly studied by high resolution seismic studies and deep exploration drilling and previously belonged to the territories with low hydrocarbon potential. On the basis of the conducted research, data on the structural and tectonic zoning of the junction zone of the Precaspian basin and the southern segment of the Urals Foredeep are summarized, the geological structure of the Aktobe Uralian Foreland area is substantiated, favorable geochemical criteria of oil and gas potential are revealed.
{"title":"PROSPECTS OF OIL AND GAS POTENTIAL OF THE JUNCTION ZONE OF THE NORTH-EAST OF THE PRECASPIAN BASIN AND THE SOUTHERN SEGMENT OF THE URAL FOLD SYSTEM (AKTOBE URALIAN FOREDEEP)","authors":"A. Zhanserkeyeva","doi":"10.37878/2708-0080/2022-5.02","DOIUrl":"https://doi.org/10.37878/2708-0080/2022-5.02","url":null,"abstract":"The identification of promising areas of exploration to develop the resource base of the Aktobe region is an urgent issue due to the gradual depletion of proven hydrocarbon reserves. The subsalt complex of the Aktobe Uralian Foreland is a prospective object, where prospecting and exploration work was carried out unevenly in the 1950s and 1980s, and most of the seismic survey data of 2004-2008 are low-informative. The subsalt complex of the studied area has been poorly studied by high resolution seismic studies and deep exploration drilling and previously belonged to the territories with low hydrocarbon potential. On the basis of the conducted research, data on the structural and tectonic zoning of the junction zone of the Precaspian basin and the southern segment of the Urals Foredeep are summarized, the geological structure of the Aktobe Uralian Foreland area is substantiated, favorable geochemical criteria of oil and gas potential are revealed.","PeriodicalId":272594,"journal":{"name":"Neft i gaz","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131681274","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 : 2022-10-30DOI: 10.37878/2708-0080/2022-5.03
B. Durmagambetov, D. Urmanova
This article analyzes complex laboratory and simulation studies of salt deposition during oil production in conditions of low permeability with falling reservoir pressure. The object of research is Jurassic deposits of horizons with a depth of up to 3000 m. The study of salt formation problems pursues the following objectives: to determine the type of salts (within and using the resources available for research), to conduct modeling to understand longterm trends in salt formation (during water injection projects) or short-term trends (during hydraulic fracturing or cattle), as well as to make recommendations based on tests and the Schlumberger database. The formation waters of the Jurassic deposition of the field have similar hydrochemical parameters along the horizons and are chlorocalcium brines, the total mineralization of which ranges from 147.1 g/l to 186.6 g/l. According to the available data, there is no clear dependence of mineralization on the depth of occurrence. The density in surface conditions is 1097-1131 kg/m3. In terms of concentration, chlorides predominate over alkali metals (sodium, potassium), and the waters are also noticeably enriched with calcium, the content of which significantly prevails over magnesium. A characteristic feature is the low content of sulfate and bicarbonate ions. The research and scientific nature of this work is confirmed by the fact that a new scientific software for the analysis of salt deposition was used for the Kazakhstani industry of intensification of hydrocarbon production. Modeling of critical thermobaric points covers the range of predicted parameters of reservoir pressure and temperature, as well as the resulting temperature in the bottomhole zone, taking into account the operation of the installation of an electric centrifugal pump. The sensitivity analysis was carried out taking into account the percentage ratio of injected and reservoir water, the parameters of the water used during hydraulic fracturing were calculated separately. The result of the study is a quantitative assessment of the permeability from salt deposition and preventive measures to preserve the productivity coefficient of wells.
{"title":"INVESTIGATION OF THE SALT FORMATION ISSUE IN THE OIL FIELD OF THE PRECASPIAN REGION","authors":"B. Durmagambetov, D. Urmanova","doi":"10.37878/2708-0080/2022-5.03","DOIUrl":"https://doi.org/10.37878/2708-0080/2022-5.03","url":null,"abstract":"This article analyzes complex laboratory and simulation studies of salt deposition during oil production in conditions of low permeability with falling reservoir pressure. The object of research is Jurassic deposits of horizons with a depth of up to 3000 m. The study of salt formation problems pursues the following objectives: to determine the type of salts (within and using the resources available for research), to conduct modeling to understand longterm trends in salt formation (during water injection projects) or short-term trends (during hydraulic fracturing or cattle), as well as to make recommendations based on tests and the Schlumberger database. The formation waters of the Jurassic deposition of the field have similar hydrochemical parameters along the horizons and are chlorocalcium brines, the total mineralization of which ranges from 147.1 g/l to 186.6 g/l. According to the available data, there is no clear dependence of mineralization on the depth of occurrence. The density in surface conditions is 1097-1131 kg/m3. In terms of concentration, chlorides predominate over alkali metals (sodium, potassium), and the waters are also noticeably enriched with calcium, the content of which significantly prevails over magnesium. A characteristic feature is the low content of sulfate and bicarbonate ions. The research and scientific nature of this work is confirmed by the fact that a new scientific software for the analysis of salt deposition was used for the Kazakhstani industry of intensification of hydrocarbon production. Modeling of critical thermobaric points covers the range of predicted parameters of reservoir pressure and temperature, as well as the resulting temperature in the bottomhole zone, taking into account the operation of the installation of an electric centrifugal pump. The sensitivity analysis was carried out taking into account the percentage ratio of injected and reservoir water, the parameters of the water used during hydraulic fracturing were calculated separately. The result of the study is a quantitative assessment of the permeability from salt deposition and preventive measures to preserve the productivity coefficient of wells.","PeriodicalId":272594,"journal":{"name":"Neft i gaz","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132376420","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 : 2022-08-15DOI: 10.37878/2708-0080/2022-4.02
D. Akhmetov, К.М. Gizemann, М. Koldey, Liu Zhanli, Zhandos K. Sharipov
Due to the high depletion of oil reserves in the South Turgai oil and gas basin, there is a need for additional exploration of additional promising and economically attractive oil and gas objects that have not been covered by drilling through a comprehensive analysis of geological and geophysical data. Thus, in 2019, high-resolution seismic surveys were carried out at the fields of JV KazGerMunai LLP (from now on, referred to as KGM). Old 3D data were reprocessed at the Nuraly field, based on the results of which a structural and dynamic interpretation was performed, which made it possible to detail the structural and lithological characteristics of the sections and clarify reservoir properties of reservoirs and forecast bright objects. At Naturally field, based on the results of the reinterpretation, the conceptual model of sedimentation conditions, lateral and vertical facies variability of deposits was updated, which contributed to the identification of potentially promising zones and objects for the presence of oil and gas reserves, including previously unmapped ones. An analysis of the prospects of deposits in the zone of wedging out to the buried ledge of the basement and further specific activities for additional exploration will not only increase reserves in a separate field but also have a beneficial effect on the company's economy and suggest new directions for additional exploration at other fields in the region.
{"title":"ANALYSIS OF THE PROSPECTS FOR ADDITIONAL EXPLORATION OF INTERCUT ZONES TO THE BURIED LIFTING OF THE M-II-4 HORIZON FOUNDATION OF NURALY DEPOSIT","authors":"D. Akhmetov, К.М. Gizemann, М. Koldey, Liu Zhanli, Zhandos K. Sharipov","doi":"10.37878/2708-0080/2022-4.02","DOIUrl":"https://doi.org/10.37878/2708-0080/2022-4.02","url":null,"abstract":"Due to the high depletion of oil reserves in the South Turgai oil and gas basin, there is a need for additional exploration of additional promising and economically attractive oil and gas objects that have not been covered by drilling through a comprehensive analysis of geological and geophysical data. Thus, in 2019, high-resolution seismic surveys were carried out at the fields of JV KazGerMunai LLP (from now on, referred to as KGM). Old 3D data were reprocessed at the Nuraly field, based on the results of which a structural and dynamic interpretation was performed, which made it possible to detail the structural and lithological characteristics of the sections and clarify reservoir properties of reservoirs and forecast bright objects. At Naturally field, based on the results of the reinterpretation, the conceptual model of sedimentation conditions, lateral and vertical facies variability of deposits was updated, which contributed to the identification of potentially promising zones and objects for the presence of oil and gas reserves, including previously unmapped ones. An analysis of the prospects of deposits in the zone of wedging out to the buried ledge of the basement and further specific activities for additional exploration will not only increase reserves in a separate field but also have a beneficial effect on the company's economy and suggest new directions for additional exploration at other fields in the region.","PeriodicalId":272594,"journal":{"name":"Neft i gaz","volume":"129 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115630023","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 : 2022-08-15DOI: 10.37878/2708-0080/2022-4.10
G. Aubakirova, F. Isatayeva
To achieve sustainable development and to form an export-oriented model of economic growth, Kazakhstan is making a transition to low-carbon development. The transformation of the economy has improved the investment climate in the country making Kazakhstan one of the key recipients of foreign direct investment in Central Asia. In view of the above, the need to increase the scientific validity of measures taken by the state for increasing the investment attractiveness of the geological exploration industry, on the progress of which changing the resource-export model of development largely depends and building up the energy security of Kazakhstan, is updated. The article identifies the key factors constraining the strengthening of the market positions of the geological industry in Kazakhstan and negatively affecting its investment attractiveness. It has been substantiated that the sectoral problems accumulated over the entire post-Soviet period hinder the further advancement of all the extractive industries and require the activation of new measures of state support. The author analyzes the actions planned by the state to reduce socio-economic tension in single-industry towns caused by the depletion of the mineral resource base near their location. The analysis of the state regulation mechanisms of the subsoil use and the mining and metallurgical industry that are especially attractive for investors, leads to the conclusion that it is necessary to reform the Kazakhstan model of financing geological exploration using the principles of public-private partnership. An example of adaptation by Kazakhstan of the leading countriesexperience in attracting junior companies to geological exploration is considered. The difficulties that hinder the advancement of juniors in the Kazakhstan market, the opportunities for overcoming and opening up prospects have been identified. It has been substantiated that in the medium term one of the new investment policy guidelines in the geological exploration industry should be an innovative and technological course towards digital transformation of production and management processes. At the same time, Kazakhstan, like other countries with the transit economy, will have to overcome the risks and challenges that have emerged as a result of global digitalization. The article shows that to stimulate digitalization of geological exploration, significant investments are needed, which will require, alongside with government regulation, searching for new forms and mechanisms of publicprivate partnership.
{"title":"THE ROLE OF INVESTMENT ATTRACTIVENESS OF THE GEOLOGICAL EXPLORATION INDUSTRY IN ACHIEVING SUSTAINABLE DEVELOPMENT OF THE STATE","authors":"G. Aubakirova, F. Isatayeva","doi":"10.37878/2708-0080/2022-4.10","DOIUrl":"https://doi.org/10.37878/2708-0080/2022-4.10","url":null,"abstract":"To achieve sustainable development and to form an export-oriented model of economic growth, Kazakhstan is making a transition to low-carbon development. The transformation of the economy has improved the investment climate in the country making Kazakhstan one of the key recipients of foreign direct investment in Central Asia. In view of the above, the need to increase the scientific validity of measures taken by the state for increasing the investment attractiveness of the geological exploration industry, on the progress of which changing the resource-export model of development largely depends and building up the energy security of Kazakhstan, is updated. The article identifies the key factors constraining the strengthening of the market positions of the geological industry in Kazakhstan and negatively affecting its investment attractiveness. It has been substantiated that the sectoral problems accumulated over the entire post-Soviet period hinder the further advancement of all the extractive industries and require the activation of new measures of state support. The author analyzes the actions planned by the state to reduce socio-economic tension in single-industry towns caused by the depletion of the mineral resource base near their location. The analysis of the state regulation mechanisms of the subsoil use and the mining and metallurgical industry that are especially attractive for investors, leads to the conclusion that it is necessary to reform the Kazakhstan model of financing geological exploration using the principles of public-private partnership. An example of adaptation by Kazakhstan of the leading countriesexperience in attracting junior companies to geological exploration is considered. The difficulties that hinder the advancement of juniors in the Kazakhstan market, the opportunities for overcoming and opening up prospects have been identified. It has been substantiated that in the medium term one of the new investment policy guidelines in the geological exploration industry should be an innovative and technological course towards digital transformation of production and management processes. At the same time, Kazakhstan, like other countries with the transit economy, will have to overcome the risks and challenges that have emerged as a result of global digitalization. The article shows that to stimulate digitalization of geological exploration, significant investments are needed, which will require, alongside with government regulation, searching for new forms and mechanisms of publicprivate partnership.","PeriodicalId":272594,"journal":{"name":"Neft i gaz","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130266978","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 : 2022-08-15DOI: 10.37878/2708-0080/2022-4.01
H. Abilkhasimov
The results of lithological studies and paleogeographic reconstructions of the Late DevonianEarly Visean stage of development and features of the formation of the sedimentary complex of the Primorsky zone of uplifts in the south of the Caspian sedimentary basin are presented. The complex geological structure of the region is mainly due to the influence of tectonic, volcanic, and denudation processes on sedimentation. The results of drilling deep wells in recent years have made it possible to refine the internal structure, substantiate new objects in the Late Devonian complex, and reassess the prospects for oil and gas potential and predicted oil and gas resources in the south of the Caspian basin.
{"title":"SEDIMENTATION MODEL OF CARBONATE UPLIFTS OF THE COASTAL ZONE OF THE SOUTH OF THE CASPIAN SEDIMENTARY BASIN IN THE LATE DEVONIAN-EARLY VISEAN TIME","authors":"H. Abilkhasimov","doi":"10.37878/2708-0080/2022-4.01","DOIUrl":"https://doi.org/10.37878/2708-0080/2022-4.01","url":null,"abstract":"The results of lithological studies and paleogeographic reconstructions of the Late DevonianEarly Visean stage of development and features of the formation of the sedimentary complex of the Primorsky zone of uplifts in the south of the Caspian sedimentary basin are presented. The complex geological structure of the region is mainly due to the influence of tectonic, volcanic, and denudation processes on sedimentation. The results of drilling deep wells in recent years have made it possible to refine the internal structure, substantiate new objects in the Late Devonian complex, and reassess the prospects for oil and gas potential and predicted oil and gas resources in the south of the Caspian basin.","PeriodicalId":272594,"journal":{"name":"Neft i gaz","volume":"240 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127610772","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 : 2022-08-15DOI: 10.37878/2708-0080/2022-4.09
D. A. Ismailova, A. Abdukarimov, D. Delikesheva, B. Mombekov, A. Ismailov
This article presents the calculation and modification of melting properties for a certain Kazakh oil for the subsequent calculation of the Multisolid model. The bulk of crude oil in Kazakhstan contains heavy hydrocarbons that precipitate as a solid paraffin phase at low temperatures. The deposition of deposited paraffin on the pipe walls is one of the complex flow assurance problems that causes a decrease and complete blockage of oil rates due to a decrease in the flow cross-sectional area in pipelines. In addition, above ground facilities require higher power consumption and equipment failure due to paraffin plugs. Wax precipitation also increases the viscosity of the oil mixture, resulting in an increase in the energy requirement for transporting the crude oil. The main purpose of this study is to investigate melting properties and their influence on predictive wax deposition. The solution of the set goal is achieved by solving the problems of modifying and adapting existing thermodynamic models for Kazakhstani oils. At the moment, one of the main limitations of existing models is their applicability to a wide range of crude oil types. While this modified paraffin forecasting model will focus on Kazakh crude oil. As a result, modified equations have been developed to determine melting properties, namely melting point, pour point and enthalpy. The obtained results of the absolute average deviation showed the effectiveness of using the proposed correlation for measuring the pour point and melting point for Kazakhstani oils.
{"title":"EVALUATION OF MELTING PROPERTIES FOR PARAFFIN PREDICTION IN THE MULTI SOLID SOLUTION (MSS) MODEL","authors":"D. A. Ismailova, A. Abdukarimov, D. Delikesheva, B. Mombekov, A. Ismailov","doi":"10.37878/2708-0080/2022-4.09","DOIUrl":"https://doi.org/10.37878/2708-0080/2022-4.09","url":null,"abstract":"This article presents the calculation and modification of melting properties for a certain Kazakh oil for the subsequent calculation of the Multisolid model. The bulk of crude oil in Kazakhstan contains heavy hydrocarbons that precipitate as a solid paraffin phase at low temperatures. The deposition of deposited paraffin on the pipe walls is one of the complex flow assurance problems that causes a decrease and complete blockage of oil rates due to a decrease in the flow cross-sectional area in pipelines. In addition, above ground facilities require higher power consumption and equipment failure due to paraffin plugs. Wax precipitation also increases the viscosity of the oil mixture, resulting in an increase in the energy requirement for transporting the crude oil. The main purpose of this study is to investigate melting properties and their influence on predictive wax deposition. The solution of the set goal is achieved by solving the problems of modifying and adapting existing thermodynamic models for Kazakhstani oils. At the moment, one of the main limitations of existing models is their applicability to a wide range of crude oil types. While this modified paraffin forecasting model will focus on Kazakh crude oil. As a result, modified equations have been developed to determine melting properties, namely melting point, pour point and enthalpy. The obtained results of the absolute average deviation showed the effectiveness of using the proposed correlation for measuring the pour point and melting point for Kazakhstani oils.","PeriodicalId":272594,"journal":{"name":"Neft i gaz","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116293773","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 : 2022-08-15DOI: 10.37878/2708-0080/2022-4.06
J. Eyvazov
Oil production requires energy to raise fluids from the reservoir to the surface. The majority of oil wells flow naturally in the early stages of their product lifespan and are referred to as flowing wells. There is enough energy stored in the reservoir of a naturally flowing well to flow the generated fluid to the surface. Reservoir pressure and formation gas provide this energy in the flowing well. When reservoir energy is insufficient for natural flow, or when the targeted production rate is larger than the actual production rate, artificial lift is required to achieve the desired output. It is not economically viable to keep producing energy stable throughout the development of oil fields. Therefore, during the long-term operation of oil fields, the reduction of reservoir pressure and violation of the conditions of injection of wells leads to a decrease in the fluid level in the wellbore over time, making it difficult to lift the reservoir product to the surface. In this case, it is preferable to switch wells to gas lift operation. The presented article calculated the optimal parameters of the gas lift method on the reservoir-well model based on an actual well sample using the Prosper program. It determined how various parameters - the diameter of the production tubing and the skin factor - affect good production. Based on the project, it was determined that, in -2 negative skin factor and in 2.98 inches diameter of production tubing is optimum case for this well to increase the oil production rate. The purpose of the research is to determine the different trajectories of the well, the depth of gas injection into the well, and other parameters resulting from sensitivity analysis of the impact on sound production.
{"title":"GAS LIFT AS A METHOD TO INCREASE OIL PRODUCTION BASED ON ENLARGING OIL DRAINAGE AREA","authors":"J. Eyvazov","doi":"10.37878/2708-0080/2022-4.06","DOIUrl":"https://doi.org/10.37878/2708-0080/2022-4.06","url":null,"abstract":"Oil production requires energy to raise fluids from the reservoir to the surface. The majority of oil wells flow naturally in the early stages of their product lifespan and are referred to as flowing wells. There is enough energy stored in the reservoir of a naturally flowing well to flow the generated fluid to the surface. Reservoir pressure and formation gas provide this energy in the flowing well. When reservoir energy is insufficient for natural flow, or when the targeted production rate is larger than the actual production rate, artificial lift is required to achieve the desired output. It is not economically viable to keep producing energy stable throughout the development of oil fields. Therefore, during the long-term operation of oil fields, the reduction of reservoir pressure and violation of the conditions of injection of wells leads to a decrease in the fluid level in the wellbore over time, making it difficult to lift the reservoir product to the surface. In this case, it is preferable to switch wells to gas lift operation. The presented article calculated the optimal parameters of the gas lift method on the reservoir-well model based on an actual well sample using the Prosper program. It determined how various parameters - the diameter of the production tubing and the skin factor - affect good production. Based on the project, it was determined that, in -2 negative skin factor and in 2.98 inches diameter of production tubing is optimum case for this well to increase the oil production rate. The purpose of the research is to determine the different trajectories of the well, the depth of gas injection into the well, and other parameters resulting from sensitivity analysis of the impact on sound production.","PeriodicalId":272594,"journal":{"name":"Neft i gaz","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122592162","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 : 2022-08-15DOI: 10.37878/2708-0080/2022-4.07
N. Jumamukhambetov, V. Yashkov, D. Kulzhanov, E. U. Arstanaliev
The article considers the issues of assessing the impact of meteorological factors on the functioning of the most damaged overhead lines (OL) in the region under consideration, the modeling of which, taking into account the weather model, gives more realistic indicators, in the form of average residence time of the process in states, operating time for failure, recovery time, the number of transitions to an inoperable state. It is shown that from the point of view of the causes of damage to overhead lines leading to failure, the climatic impact is crucial: dust storms, pollution, sharp temperature fluctuations. The research methodology was based on the classical apparatus of mathematical statistics and reliability theory. To develop models of reliability of the main elements of power supply systems (PSS) - overhead lines (OL), the theory of Markov random processes and modeling of processes and systems was used. In terms of practical value, models have been developed that take into account environmental conditions and the main indicators of PSS reliability have been determined for use in design and operational practice: average time to failure, average recovery time and average number of transitions to an inoperable state. The use of Markov models describing PSS at the level of random processes makes it possible to apply in practice methods for assessing and predicting the reliability of PSS operating under the influence of the external environment.
{"title":"MODELING OF RELIABILITY OF 6…10 KV OVERHEAD LINES FOR POWER SUPPLY OF OIL AND GAS FACILITIES","authors":"N. Jumamukhambetov, V. Yashkov, D. Kulzhanov, E. U. Arstanaliev","doi":"10.37878/2708-0080/2022-4.07","DOIUrl":"https://doi.org/10.37878/2708-0080/2022-4.07","url":null,"abstract":"The article considers the issues of assessing the impact of meteorological factors on the functioning of the most damaged overhead lines (OL) in the region under consideration, the modeling of which, taking into account the weather model, gives more realistic indicators, in the form of average residence time of the process in states, operating time for failure, recovery time, the number of transitions to an inoperable state. It is shown that from the point of view of the causes of damage to overhead lines leading to failure, the climatic impact is crucial: dust storms, pollution, sharp temperature fluctuations. The research methodology was based on the classical apparatus of mathematical statistics and reliability theory. To develop models of reliability of the main elements of power supply systems (PSS) - overhead lines (OL), the theory of Markov random processes and modeling of processes and systems was used. In terms of practical value, models have been developed that take into account environmental conditions and the main indicators of PSS reliability have been determined for use in design and operational practice: average time to failure, average recovery time and average number of transitions to an inoperable state. The use of Markov models describing PSS at the level of random processes makes it possible to apply in practice methods for assessing and predicting the reliability of PSS operating under the influence of the external environment.","PeriodicalId":272594,"journal":{"name":"Neft i gaz","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122290579","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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