Pub Date : 2023-01-10DOI: 10.31660/0445-0108-2022-6-41-55
Yu. E. Katanov, A. Aristov, Y. Vaganov, A. G. Klenskih
This article considers the problem associated with conducting experiments in computational fluid dynamics, the solution of which is the application of the equations of incompressible fluid flow and the introduction of vortex flow functions.The aim of this work is to simulate the temperature viscous flow with a set Reynolds number inside a porous medium enclosed in the rock material to further describe the thermal front of motion in the form of a system of equations, with the choice of the most likely suitable system with differentiated equations for each segment of the thermal simulation (along the cube axes), the final cross-correlation, spread in the identified physical field of confusers/diffusers. Scientific novelty of the performed work is due to the original approach to the development and interpretation of the results of the algorithm for predicting the temperature field in the textural configuration of the confusers/diffusers of rocks.
{"title":"Digital core: modeling the temperature field in the hollow space of the rock","authors":"Yu. E. Katanov, A. Aristov, Y. Vaganov, A. G. Klenskih","doi":"10.31660/0445-0108-2022-6-41-55","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-6-41-55","url":null,"abstract":"This article considers the problem associated with conducting experiments in computational fluid dynamics, the solution of which is the application of the equations of incompressible fluid flow and the introduction of vortex flow functions.The aim of this work is to simulate the temperature viscous flow with a set Reynolds number inside a porous medium enclosed in the rock material to further describe the thermal front of motion in the form of a system of equations, with the choice of the most likely suitable system with differentiated equations for each segment of the thermal simulation (along the cube axes), the final cross-correlation, spread in the identified physical field of confusers/diffusers. Scientific novelty of the performed work is due to the original approach to the development and interpretation of the results of the algorithm for predicting the temperature field in the textural configuration of the confusers/diffusers of rocks.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"8 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123671719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-10DOI: 10.31660/0445-0108-2022-6-26-40
Y. Vaganov, A. Shiryaev, V. Naumenko
Low-pressure gas production is one of the most important tasks in gas field development. To estimate the reserves of previously uninvolved reservoirs with low reservoir properties, it is necessary to analyze available geological and geophysical information for the subsequent creation of a three-dimensional geological model. Based on this model, a filtration model will be built, which allow calculating the flow rates of both actually drilled and designed wells for the entire development period. The model is built on the basis of small amount of information content, but the modeling results sufficiently reflect the presence of a zone of poorly saturated part of the Cenomanian gas reservoir, and structural and petrophysical features of the reservoir in the territory. As a result of the conducted research, the low pressure gas reserves at the Yamburgskoye field were calculated. The calculations, which are given in the article, are correct and don't contradict the Regulations on the creation of permanent geological and technological models of oil and gas and oil fields (RD 153-39.0-047-00).
{"title":"Modeling the transition zone of the Cenomanian gas reservoir","authors":"Y. Vaganov, A. Shiryaev, V. Naumenko","doi":"10.31660/0445-0108-2022-6-26-40","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-6-26-40","url":null,"abstract":"Low-pressure gas production is one of the most important tasks in gas field development. To estimate the reserves of previously uninvolved reservoirs with low reservoir properties, it is necessary to analyze available geological and geophysical information for the subsequent creation of a three-dimensional geological model. Based on this model, a filtration model will be built, which allow calculating the flow rates of both actually drilled and designed wells for the entire development period. The model is built on the basis of small amount of information content, but the modeling results sufficiently reflect the presence of a zone of poorly saturated part of the Cenomanian gas reservoir, and structural and petrophysical features of the reservoir in the territory. As a result of the conducted research, the low pressure gas reserves at the Yamburgskoye field were calculated. The calculations, which are given in the article, are correct and don't contradict the Regulations on the creation of permanent geological and technological models of oil and gas and oil fields (RD 153-39.0-047-00).","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130578619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-10DOI: 10.31660/0445-0108-2022-6-9-25
S. Bembel, R. M. Bembel, V. O. Rogozhneva
We present in this article results of an analysis of materials of a complex of geological and geophysical studies, including a description of the core data, facies' characteristics, tectonic features of the evolution of the territory, field development geophysical data. The initial materials for the research were the drilling data and the results of seismic surveys, as well as publications of geologists and geophysicists dealing with the problem of finding ways to increase the efficiency of the development of hard-to-recover reserves of Tyumen suite. The research area is confined to the eastern slope of the Krasnoleninsky arch of Western Siberia, within which several oil fields of various sizes have been identified that are now being actively development.Based on the work carried out on the group of layers of Tyumen suite, areas of distribution of lithofacies of fine-medium-grained and multi-grained sandstones within the forecast area of development of channels and cones of deltas and facies of channel valleys were identified, taking into account the structural factor and isopach maps. The transverse dimensions of the boundaries of the development of riverbed valleys with a very complex configuration range from 0.5 to 2.5 km. The predicted effective sandstone thicknesses of individual strata in areas with improved filtration and capacitive properties reach 12-14 m.The analysis of the geological structure of the deposits of Tyumen suite will serve as an information basis for creating the molds of reliable geological model, based on which, with the help of digital modeling, an assessment of the prospects for further work on the object under study and the search for the necessary methods for its development will be
{"title":"Definition of the geological structure of deposits of Tyumen suite based on the results of tectonic-sedimentary analysis of the eastern part of the Krasnoleninsky arch of Western Siberia","authors":"S. Bembel, R. M. Bembel, V. O. Rogozhneva","doi":"10.31660/0445-0108-2022-6-9-25","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-6-9-25","url":null,"abstract":"We present in this article results of an analysis of materials of a complex of geological and geophysical studies, including a description of the core data, facies' characteristics, tectonic features of the evolution of the territory, field development geophysical data. The initial materials for the research were the drilling data and the results of seismic surveys, as well as publications of geologists and geophysicists dealing with the problem of finding ways to increase the efficiency of the development of hard-to-recover reserves of Tyumen suite. The research area is confined to the eastern slope of the Krasnoleninsky arch of Western Siberia, within which several oil fields of various sizes have been identified that are now being actively development.Based on the work carried out on the group of layers of Tyumen suite, areas of distribution of lithofacies of fine-medium-grained and multi-grained sandstones within the forecast area of development of channels and cones of deltas and facies of channel valleys were identified, taking into account the structural factor and isopach maps. The transverse dimensions of the boundaries of the development of riverbed valleys with a very complex configuration range from 0.5 to 2.5 km. The predicted effective sandstone thicknesses of individual strata in areas with improved filtration and capacitive properties reach 12-14 m.The analysis of the geological structure of the deposits of Tyumen suite will serve as an information basis for creating the molds of reliable geological model, based on which, with the help of digital modeling, an assessment of the prospects for further work on the object under study and the search for the necessary methods for its development will be","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134032268","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 : 2022-12-04DOI: 10.31660/0445-0108-2022-5-121-131
M. Y. Тarasov, Е. A. Кlevtsov, V. M. Тarasov
To ensure efficient separation of oil production wells with a high content of associated petroleum gas, inlet separation units are used, consisting of an inlet separator, which ensures the separation of the main amount of free gas from liquid, an oil and gas separator, in which free gas is finally separated from the liquid, and a separator-drop catcher, designed to prevent entrainment of droplet liquid with gas. When a gas-water-oil mixture with a high water content enters the plant, an oil and gas water separator can be used instead of an oil and gas separator, which makes it possible to carry out a preliminary discharge of water simultaneously with degassing. The article considers the technology of separation and preliminary discharge of water for oils with high gas content and proposes a variant using heating of a partially degassed liquid. Empirical dependences of the minimum height of the liquid column above the oil and gas separator (gas and water separator) depending on the viscosity and density of the liquid are given. A technique for technological calculation of the mutual arrangement of apparatuses has been developed, the possibility of using heat exchangers as part of the installation has been shown.
{"title":"Features of the technological calculation of the inlet separation plant with preliminary water discharge","authors":"M. Y. Тarasov, Е. A. Кlevtsov, V. M. Тarasov","doi":"10.31660/0445-0108-2022-5-121-131","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-5-121-131","url":null,"abstract":" To ensure efficient separation of oil production wells with a high content of associated petroleum gas, inlet separation units are used, consisting of an inlet separator, which ensures the separation of the main amount of free gas from liquid, an oil and gas separator, in which free gas is finally separated from the liquid, and a separator-drop catcher, designed to prevent entrainment of droplet liquid with gas. When a gas-water-oil mixture with a high water content enters the plant, an oil and gas water separator can be used instead of an oil and gas separator, which makes it possible to carry out a preliminary discharge of water simultaneously with degassing. The article considers the technology of separation and preliminary discharge of water for oils with high gas content and proposes a variant using heating of a partially degassed liquid. Empirical dependences of the minimum height of the liquid column above the oil and gas separator (gas and water separator) depending on the viscosity and density of the liquid are given. A technique for technological calculation of the mutual arrangement of apparatuses has been developed, the possibility of using heat exchangers as part of the installation has been shown.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115519502","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 : 2022-12-04DOI: 10.31660/0445-0108-2022-5-57-74
M. G. Yusifov
In oilfield practice, the lithofacies criterion is very often decisive for the formation of deposits of liquid and gaseous hydrocarbons. The Absheron lithofacies type of sediments (Absheron facies), enriched in quartz material, composes the reservoirs of the horizons of all large oil and gas fields in the South Caspian Basin. The genesis of the Absheron facies is closely related to the genesis of the productive stratum, there is no consensus on both issues to date. It is indisputable that the productive stratum and the Absheron facies were formed in the conditions of a closed continental basin, which arose as a result of the orogenic restructuring of the areas surrounding the Caspian Sea, the bowing of its bottom and the subsequent Pontian regression of the sea. As a result of the restructuring of the hydrographic system in the south of the Russian Platform, many paleorivers, flowing along the newly formed land, began to flow and carry a huge amount of water and precipitation into the South Caspian Basin. Deposition of the productive stratum and Absheron facies began. The greatest role in the supply of quartz-enriched sandy material belonged to the Paleovolga, which, together with other paleorivers in the north of the South Caspian Basin, formed an extensive marginal delta, from which sediments were transported far to the south, west, and east.
{"title":"The role of the Absheron facies in the formation of the productive strata in the South Caspian Basin","authors":"M. G. Yusifov","doi":"10.31660/0445-0108-2022-5-57-74","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-5-57-74","url":null,"abstract":" In oilfield practice, the lithofacies criterion is very often decisive for the formation of deposits of liquid and gaseous hydrocarbons. The Absheron lithofacies type of sediments (Absheron facies), enriched in quartz material, composes the reservoirs of the horizons of all large oil and gas fields in the South Caspian Basin. The genesis of the Absheron facies is closely related to the genesis of the productive stratum, there is no consensus on both issues to date. It is indisputable that the productive stratum and the Absheron facies were formed in the conditions of a closed continental basin, which arose as a result of the orogenic restructuring of the areas surrounding the Caspian Sea, the bowing of its bottom and the subsequent Pontian regression of the sea. As a result of the restructuring of the hydrographic system in the south of the Russian Platform, many paleorivers, flowing along the newly formed land, began to flow and carry a huge amount of water and precipitation into the South Caspian Basin. Deposition of the productive stratum and Absheron facies began. The greatest role in the supply of quartz-enriched sandy material belonged to the Paleovolga, which, together with other paleorivers in the north of the South Caspian Basin, formed an extensive marginal delta, from which sediments were transported far to the south, west, and east.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114764562","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 : 2022-12-04DOI: 10.31660/0445-0108-2022-5-36-45
V. I. Kozyrev, V. A. Beshentsev
The problem of groundwater protection in areas, where oil and gas production is taking place, is especially important today. The article focuses on the impact of groundwater extraction on the state of the filtration medium in small water bodies. Studies including hydrodynamic testing (cluster pumping) were being carrying out from 9 years at the same site. As a result of three exper-iments, experimental data were obtained, and then were interpreted in the framework of the Hantush model. The parameters of the aquifer are determined: coefficient of water conductivity and pressure conductivity factor, overflow factor, overflow coefficient. The article gives an analysis of changes in reservoir parameters. As a result, it was found that the long-term operation of ground-water in small water bodies also leads to an improvement in the state of the filtration medium, as well as in large deposits of fresh groundwater. It should be emphasized that in conditions of continuous extraction of groundwater the subsoil user should pay special attention to groundwater monitoring, namely, hydrodynamic studies, the results of which determine the hydrogeological parameters of the reservoir, and their changes indicate the state of the filtration medium.
{"title":"Influence of groundwater extraction on rock filtration properties in the territory of the Latitudinal Ob region","authors":"V. I. Kozyrev, V. A. Beshentsev","doi":"10.31660/0445-0108-2022-5-36-45","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-5-36-45","url":null,"abstract":" The problem of groundwater protection in areas, where oil and gas production is taking place, is especially important today. The article focuses on the impact of groundwater extraction on the state of the filtration medium in small water bodies. Studies including hydrodynamic testing (cluster pumping) were being carrying out from 9 years at the same site. As a result of three exper-iments, experimental data were obtained, and then were interpreted in the framework of the Hantush model. The parameters of the aquifer are determined: coefficient of water conductivity and pressure conductivity factor, overflow factor, overflow coefficient. The article gives an analysis of changes in reservoir parameters. As a result, it was found that the long-term operation of ground-water in small water bodies also leads to an improvement in the state of the filtration medium, as well as in large deposits of fresh groundwater. It should be emphasized that in conditions of continuous extraction of groundwater the subsoil user should pay special attention to groundwater monitoring, namely, hydrodynamic studies, the results of which determine the hydrogeological parameters of the reservoir, and their changes indicate the state of the filtration medium.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"163 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131766324","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 : 2022-12-04DOI: 10.31660/0445-0108-2022-5-75-89
A. V. Kobyashev
Miscibility largely determines the performance of gas injection. Miscible displacement allows achieving maximum effect. The minimum miscibility pressure (MMP) is a key parameter, which is determined when justifying a gas injection project. For the conditions of East Siberian reservoirs, the accuracy of correlation equations is 10-50 %, and A. M. Maklavani, H. M. Sebastian, and M. Dong equations demonstrate the most accurate values. The equation of state matched to the results of routine studies evaluates the MMP with an error of up to 30 %. Additional data from special studies (swell test) increased the estimating accuracy by up to 10 %. An express laboratory method for measuring the miscibility parameter (a method of vanishing interfacial tension) showed high accuracy of MMP estimate. The method also allows describing the process of changing the interfacial tension with increasing pressure or changing the gas composition, and complements the process of adjusting the equation of state when setting up a slim tube experiment.
混相在很大程度上决定了注气性能。混相驱替可以达到最大的效果。最小混相压力(MMP)是确定注气项目合理性的关键参数。在东西伯利亚储层条件下，相关方程的精度为10 ~ 50%，其中A. M. Maklavani、H. M. Sebastian和M. Dong方程精度最高。与常规研究结果相匹配的状态方程对MMP的评价误差高达30%。来自特殊研究(膨胀测试)的额外数据使估计精度提高了10%。一种快速测定混相参数的实验室方法(消失界面张力法)显示出较高的MMP估计精度。该方法还可以描述随着压力的增加或气体成分的改变而改变界面张力的过程，并补充了设置细管实验时调整状态方程的过程。
{"title":"A case study of the Severo-Danilovskoye field on experimental and numerical determination of miscibility parameters when justifying gas injection","authors":"A. V. Kobyashev","doi":"10.31660/0445-0108-2022-5-75-89","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-5-75-89","url":null,"abstract":" Miscibility largely determines the performance of gas injection. Miscible displacement allows achieving maximum effect. The minimum miscibility pressure (MMP) is a key parameter, which is determined when justifying a gas injection project. For the conditions of East Siberian reservoirs, the accuracy of correlation equations is 10-50 %, and A. M. Maklavani, H. M. Sebastian, and M. Dong equations demonstrate the most accurate values. The equation of state matched to the results of routine studies evaluates the MMP with an error of up to 30 %. Additional data from special studies (swell test) increased the estimating accuracy by up to 10 %. An express laboratory method for measuring the miscibility parameter (a method of vanishing interfacial tension) showed high accuracy of MMP estimate. The method also allows describing the process of changing the interfacial tension with increasing pressure or changing the gas composition, and complements the process of adjusting the equation of state when setting up a slim tube experiment.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123527696","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 : 2022-12-04DOI: 10.31660/0445-0108-2022-5-90-97
Y. Pakharukov, F. Shabiev, R. Safargaliev, A. V. Morev
In the article, we consider movement of hydrophilic and hydrophobic liquids in a capillary. It is known that structure of flow of such fluids depends on set of conditions. The issue of correct choice of control parameters is of great importance for controlling the transition of the flow into different modes. The most important issue in the filtration problem is morphological stability of displacement front during filtration. It is generally assumed that it is sufficient to control the capillary number to change the flow regimes. The article shows that another parameter can be singled out, which is the disjoining pressure. If mechanisms of influence on wedging pressure can be found, then it is possible to control effectively flow by changing thickness of jet and to control the process of clustering (splitting of jet into droplets). In the article, it is shown that such mechanism can be interaction of hydrocarbon molecules with nanoparticles.
{"title":"Flow of oil nanoclusters in a porous medium capillary","authors":"Y. Pakharukov, F. Shabiev, R. Safargaliev, A. V. Morev","doi":"10.31660/0445-0108-2022-5-90-97","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-5-90-97","url":null,"abstract":" In the article, we consider movement of hydrophilic and hydrophobic liquids in a capillary. It is known that structure of flow of such fluids depends on set of conditions. The issue of correct choice of control parameters is of great importance for controlling the transition of the flow into different modes. The most important issue in the filtration problem is morphological stability of displacement front during filtration. It is generally assumed that it is sufficient to control the capillary number to change the flow regimes. The article shows that another parameter can be singled out, which is the disjoining pressure. If mechanisms of influence on wedging pressure can be found, then it is possible to control effectively flow by changing thickness of jet and to control the process of clustering (splitting of jet into droplets). In the article, it is shown that such mechanism can be interaction of hydrocarbon molecules with nanoparticles.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130047255","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 : 2022-12-04DOI: 10.31660/0445-0108-2022-5-108-120
O. V. Fominykh, S. A. Leontiev, V. N. Moroz
It is necessary to know the value of the gas factor in order to perform technological calculations when designing systems for the rational use of associated petroleum gas. The value of the gas factor is determined by the results of a study of deep oil samples. As a rule, the well production of oil fields is waterlogged, and its value increases with time. Many researchers have proven the fact of the dissolution of hydrocarbon gases in reservoir water; for example, according to some results, up to one cubic meter of gas can be dissolved in one cubic meter of water. This fact has a significant impact on the technological modes of operation of well production preparation units, since in their design only the value of the gas factor of the produced oil is taken into account. It is necessary to develop a reliable method for calculating the limiting gas content of reservoir water and the amount of gas releasing during pressure reduction in order to correctly account for the volume of gas dissolving in produced water. The article presents the results of studies on the calculation of the gas factor of reservoir water using various methods; the obtained results are compared with laboratory data.
{"title":"Determining the gas volume dissolving in produced water during the oil field development","authors":"O. V. Fominykh, S. A. Leontiev, V. N. Moroz","doi":"10.31660/0445-0108-2022-5-108-120","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-5-108-120","url":null,"abstract":" It is necessary to know the value of the gas factor in order to perform technological calculations when designing systems for the rational use of associated petroleum gas. The value of the gas factor is determined by the results of a study of deep oil samples. As a rule, the well production of oil fields is waterlogged, and its value increases with time. Many researchers have proven the fact of the dissolution of hydrocarbon gases in reservoir water; for example, according to some results, up to one cubic meter of gas can be dissolved in one cubic meter of water. This fact has a significant impact on the technological modes of operation of well production preparation units, since in their design only the value of the gas factor of the produced oil is taken into account. It is necessary to develop a reliable method for calculating the limiting gas content of reservoir water and the amount of gas releasing during pressure reduction in order to correctly account for the volume of gas dissolving in produced water. The article presents the results of studies on the calculation of the gas factor of reservoir water using various methods; the obtained results are compared with laboratory data.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123341100","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 : 2022-12-04DOI: 10.31660/0445-0108-2022-5-98-107
V. Ovchinnikov, O. Shemelina
It draws our attention to the processes of interaction between the well and the penetrated permeable formations during its construction, which are largely determined by geological and thermobaric conditions, types of fluid saturating the formation, used technologies and technical means. The article deals with the main problems of well construction intended for the high-viscosity oil production. Laboratory and experimental studies have been conducted to solve these issues, they will help to scientifically substantiate and implement new technologies and technical means to increase productivity and durability of wells intended for production of high-viscosity oil from productive formations with complex thermobaric conditions. In this work, the authors conducted a study of the formulations of flushing fluids to penetrate productive horizons with high-viscosity formation fluids. Based on the results of the laboratory tests, it was decided to use a fresh polycationic solution.
{"title":"Investigating drilling fluid formulations to penetrate productive horizons with high-viscosity formation fluids","authors":"V. Ovchinnikov, O. Shemelina","doi":"10.31660/0445-0108-2022-5-98-107","DOIUrl":"https://doi.org/10.31660/0445-0108-2022-5-98-107","url":null,"abstract":" It draws our attention to the processes of interaction between the well and the penetrated permeable formations during its construction, which are largely determined by geological and thermobaric conditions, types of fluid saturating the formation, used technologies and technical means. The article deals with the main problems of well construction intended for the high-viscosity oil production. Laboratory and experimental studies have been conducted to solve these issues, they will help to scientifically substantiate and implement new technologies and technical means to increase productivity and durability of wells intended for production of high-viscosity oil from productive formations with complex thermobaric conditions. In this work, the authors conducted a study of the formulations of flushing fluids to penetrate productive horizons with high-viscosity formation fluids. Based on the results of the laboratory tests, it was decided to use a fresh polycationic solution.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123709994","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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