Pub Date : 2024-07-10DOI: 10.31660/0445-0108-2024-3-33-43
Yu. A. Rozhitsin, V. Belkina
Most of the deposits that that have been developed in Western Siberia over the past 10 to 15 years are characterized by a complex and highly complex structure with small sizes. The effective development of such deposits is possible only on the basis of adequate and sufficiently accurate models. The construction of detailed and high-precision models of complex deposits is impossible without a comprehensive analysis of all types of geological and geophysical information, and in some cases, the physical and chemical properties of reservoir fluids. The aim of the study is to clarify the geological structure of the PK19 2 formation of the Beregovoye field through a comprehensive analysis. The use of an expanded well logging, predictive maps of effective thicknesses and sandiness according to seismic data and the justification of an increased set of regional and local benchmarks made it possible to clarify the area of hydrocarbon distribution and show that the deposit is not a single one, but consists of three hydrodynamically separated deposits. The lithological differentiation of the deposits is indirectly confirmed by a significant difference in fluid contacts. The discrepancy between the contacts of the northern and southern deposits is 6 m. An analysis of the physico-chemical properties of reservoir fluids has shown that the northern and southern deposits are saturated with condensates of different types and significantly different densities. The results of the work have enabled the following conclusions to be drawn: firstly, the structure of the PK19 2 formation deposits of the Beregovoye field has been clarified and detailed; secondly, the reserves have been clarified; and thirdly, it has been demonstrated that the condensate density of the northern deposit is such that setting condensate reserves on the state balance and their extraction from this deposit are economically impractical.
{"title":"Modern approaches to the justification of zones with different saturation","authors":"Yu. A. Rozhitsin, V. Belkina","doi":"10.31660/0445-0108-2024-3-33-43","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-3-33-43","url":null,"abstract":" Most of the deposits that that have been developed in Western Siberia over the past 10 to 15 years are characterized by a complex and highly complex structure with small sizes. The effective development of such deposits is possible only on the basis of adequate and sufficiently accurate models. The construction of detailed and high-precision models of complex deposits is impossible without a comprehensive analysis of all types of geological and geophysical information, and in some cases, the physical and chemical properties of reservoir fluids. The aim of the study is to clarify the geological structure of the PK19 2 formation of the Beregovoye field through a comprehensive analysis. The use of an expanded well logging, predictive maps of effective thicknesses and sandiness according to seismic data and the justification of an increased set of regional and local benchmarks made it possible to clarify the area of hydrocarbon distribution and show that the deposit is not a single one, but consists of three hydrodynamically separated deposits. The lithological differentiation of the deposits is indirectly confirmed by a significant difference in fluid contacts. The discrepancy between the contacts of the northern and southern deposits is 6 m. An analysis of the physico-chemical properties of reservoir fluids has shown that the northern and southern deposits are saturated with condensates of different types and significantly different densities. The results of the work have enabled the following conclusions to be drawn: firstly, the structure of the PK19 2 formation deposits of the Beregovoye field has been clarified and detailed; secondly, the reserves have been clarified; and thirdly, it has been demonstrated that the condensate density of the northern deposit is such that setting condensate reserves on the state balance and their extraction from this deposit are economically impractical.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"41 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141660343","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 : 2024-07-10DOI: 10.31660/0445-0108-2024-3-100-113
T. I. Sinitsyna, R. G. Gilaev, A. S. Nabiullin, M. I. Popovich, Ya. M. Kurbanov
The principal prerequisites for this study include a reduction in the number of operating oil wells at the Samotlor Field due to the corrosive destruction of production strings, which has resulted in a loss of oil recoveries during workovers and well integrity restoration efforts. The volume of such destruction over the past five years of field development has exceeded one thousand wells. The main focus of the study is to identify all the influencing factors that catalyze the wear of the production string metal, as well as to develop methods for protecting wells, taking into account the identified source of the causes. The tasks set in this article are solved by applying statistical analysis, geological analysis, and field analysis of well data. The data pertaining to the production history were collated and validated, while the statistical training sample was constructed in Microsoft Excel. The geological and field analysis of well data was conducted using the RN-KIN software package. The corrosion rate was simulated in Microsoft Excel using the VBA programming language. The study represents a comprehensive analysis of the production well stock, which has enabled the root causes of the emergence and development of corrosion processes to be identified. The laboratory studies resulted in numerical corrosion rates and a mathematical model that permits the consideration of the identified factors in order to assess the risks and corrosion rates in the wells. The practical relevance of the study lies in the methods developed and introduced to protect production strings from corrosion and erosion effects in the production well stock.
这项研究的主要先决条件包括萨莫特勒油田的作业油井数量减少，原因是生产链受到腐蚀性破坏，导致在修井和恢复油井完整性的工作中采油量减少。在过去五年的油田开发过程中，这种破坏的油井数量已超过一千口。 研究的主要重点是确定催化生产串金属磨损的所有影响因素，并在考虑已确定的原因来源的基础上，制定保护油井的方法。 本文设定的任务是通过应用统计分析、地质分析和油井数据现场分析来解决的。对生产历史数据进行了整理和验证，并在 Microsoft Excel 中构建了统计培训样本。使用 RN-KIN 软件包对油井数据进行了地质和现场分析。在 Microsoft Excel 中使用 VBA 编程语言模拟了腐蚀率。这项研究是对生产井库存的一次全面分析，从而确定了腐蚀过程出现和发展的根本原因。实验室研究得出了数值腐蚀率和数学模型，该模型允许考虑已确定的因素，以评估油井的风险和腐蚀率。这项研究的实际意义在于开发和引入了保护生产井井筒免受腐蚀和侵蚀影响的方法。
{"title":"A case study of the Samotlor field to analyze corrosive damage of casing strings in production wells","authors":"T. I. Sinitsyna, R. G. Gilaev, A. S. Nabiullin, M. I. Popovich, Ya. M. Kurbanov","doi":"10.31660/0445-0108-2024-3-100-113","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-3-100-113","url":null,"abstract":" The principal prerequisites for this study include a reduction in the number of operating oil wells at the Samotlor Field due to the corrosive destruction of production strings, which has resulted in a loss of oil recoveries during workovers and well integrity restoration efforts. The volume of such destruction over the past five years of field development has exceeded one thousand wells. The main focus of the study is to identify all the influencing factors that catalyze the wear of the production string metal, as well as to develop methods for protecting wells, taking into account the identified source of the causes. The tasks set in this article are solved by applying statistical analysis, geological analysis, and field analysis of well data. The data pertaining to the production history were collated and validated, while the statistical training sample was constructed in Microsoft Excel. The geological and field analysis of well data was conducted using the RN-KIN software package. The corrosion rate was simulated in Microsoft Excel using the VBA programming language. The study represents a comprehensive analysis of the production well stock, which has enabled the root causes of the emergence and development of corrosion processes to be identified. The laboratory studies resulted in numerical corrosion rates and a mathematical model that permits the consideration of the identified factors in order to assess the risks and corrosion rates in the wells. The practical relevance of the study lies in the methods developed and introduced to protect production strings from corrosion and erosion effects in the production well stock.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"38 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141660358","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 : 2024-05-20DOI: 10.31660/0445-0108-2024-2-56-66
I. A. Vyatkin, S. A. Podmogilnyj
This article is devoted to a qualitative and quantitative evaluation of the permeability values obtained during gas-hydrodynamic well tests with observation well testing in the Turonian deposits of the Yuzhno-Russkoye field. As is well known, Turonian deposits of Western Siberia belong to hard-to-recover reserves. The Turonian reservoir is characterized by low permeability, abnormally high initial reservoir pressure and abnormally low temperature. The obtained data can be used to clarify the geological structure of the field during further development of the deposit. When conducting gas-hydrodynamic studies in the production well, a depth gauge was lowered into the observation well together with hydrostatic listening. The response obtained in the well that was reacting well to stop the well that was perturbing indicates the hydrodynamic connection between the wells. The formula for determining the survey radius was used to calculate the average effective permeability between the wells. When the permeabilities determined according to gas-hydrodynamic studies and observation well testing were compared, it was noted that the data converged. Based on the results, it was decided to carry out gas-hydrodynamic studies together with observation well testing in the future.
{"title":"An evaluation of the permeability obtained from the gas-hydrodynamic studies of the wells of the Turonian deposit at the Yuzhno-Russkoye field","authors":"I. A. Vyatkin, S. A. Podmogilnyj","doi":"10.31660/0445-0108-2024-2-56-66","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-2-56-66","url":null,"abstract":"This article is devoted to a qualitative and quantitative evaluation of the permeability values obtained during gas-hydrodynamic well tests with observation well testing in the Turonian deposits of the Yuzhno-Russkoye field. As is well known, Turonian deposits of Western Siberia belong to hard-to-recover reserves. The Turonian reservoir is characterized by low permeability, abnormally high initial reservoir pressure and abnormally low temperature. The obtained data can be used to clarify the geological structure of the field during further development of the deposit. When conducting gas-hydrodynamic studies in the production well, a depth gauge was lowered into the observation well together with hydrostatic listening. The response obtained in the well that was reacting well to stop the well that was perturbing indicates the hydrodynamic connection between the wells. The formula for determining the survey radius was used to calculate the average effective permeability between the wells. When the permeabilities determined according to gas-hydrodynamic studies and observation well testing were compared, it was noted that the data converged. Based on the results, it was decided to carry out gas-hydrodynamic studies together with observation well testing in the future.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"20 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141119882","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 : 2024-05-20DOI: 10.31660/0445-0108-2024-2-25-42
Yu. I. Salnikova, R. Abdrashitova, D. V. Berdova, T. V. Semenova
The objective of the presented study is to assess the efficacy of the Aptian-Albian-Cenomanian hydrogeological complex in the disposal of surplus associated water generated in large quantities during oil production within the Kamennoye subsoil area.The necessity for utilising produced water within the Kamennoye subsoil area is justified by the accumulated volume of water currently exceeding 10 000 thousand m3. The water content in wells' production at the Kamennoye subsoil area is 52-55 %. Furthermore, further extraction will result in an increase in the water cut. One of the key challenges facing subsoil users is to minimise the negative impact of water disposal into the absorbing horizon.In the course of the study, the following tasks were solved: assessment of the natural geological and hydrogeological conditions of the Aptian-Albian-Cenomanian hydrogeological complex, analysis of the stability of the hydrogeochemical indicators of the groundwater in the complex based on the results of monitoring studies (since the 1960s), assessment of the compatibility of the produced water and the formation water by calculating the carbonate equilibrium of the system. The obtained solution of each of the above tasks indicates the rationality of using the Aptian-Albian-Cenomanian hydrogeological complex for the disposal of produced water. The article also emphasises the necessity of continuous improvement of the system for monitoring the condition of the absorbing horizon, as well as careful observance of all environmental protection measures, which is a prerequisite for preserving the natural balance of the subsoil of the West Siberian oil and gas basin.
{"title":"Experience of using the Aptian-Albian-Cenomanian hydrogeological complex in the disposal of produced water from the Kamennoye subsoil area","authors":"Yu. I. Salnikova, R. Abdrashitova, D. V. Berdova, T. V. Semenova","doi":"10.31660/0445-0108-2024-2-25-42","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-2-25-42","url":null,"abstract":"The objective of the presented study is to assess the efficacy of the Aptian-Albian-Cenomanian hydrogeological complex in the disposal of surplus associated water generated in large quantities during oil production within the Kamennoye subsoil area.The necessity for utilising produced water within the Kamennoye subsoil area is justified by the accumulated volume of water currently exceeding 10 000 thousand m3. The water content in wells' production at the Kamennoye subsoil area is 52-55 %. Furthermore, further extraction will result in an increase in the water cut. One of the key challenges facing subsoil users is to minimise the negative impact of water disposal into the absorbing horizon.In the course of the study, the following tasks were solved: assessment of the natural geological and hydrogeological conditions of the Aptian-Albian-Cenomanian hydrogeological complex, analysis of the stability of the hydrogeochemical indicators of the groundwater in the complex based on the results of monitoring studies (since the 1960s), assessment of the compatibility of the produced water and the formation water by calculating the carbonate equilibrium of the system. The obtained solution of each of the above tasks indicates the rationality of using the Aptian-Albian-Cenomanian hydrogeological complex for the disposal of produced water. The article also emphasises the necessity of continuous improvement of the system for monitoring the condition of the absorbing horizon, as well as careful observance of all environmental protection measures, which is a prerequisite for preserving the natural balance of the subsoil of the West Siberian oil and gas basin.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"67 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141121509","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 : 2024-05-20DOI: 10.31660/0445-0108-2024-2-104-115
V. Spasibov, M. A. Kireeva
The active use of helicopter transportation to facilitate the construction and operation of oil and gas facilities in the Far North has resulted in the establishment of refueling points, which include fuel tank farms. The evaporation of fuel during the filling and storage of fuel in tanks is the primary cause of product loss, which results in economic damage and environmental pollution. The lack of scientifically substantiated technical solutions to prevent fuel losses means that it is not possible to completely eliminate fuel losses. The objective of this article is to develop a control system for a fleet of horizontal tanks that minimizes fuel losses. The development is based on a study of the factors affecting the volume of evaporation, which are divided into three categories: those that can be controlled, those that cannot be controlled, and those that can be controlled and influenced. The result is a schematic solution of the automated control system that performs condensation of fuel vapours evaporating in the process of tank farm operation, and also determines the priority of tank use depending on the value of vapour pressure in them. This makes it possible to reduce fuel losses by a factor of five.
{"title":"Improving the efficiency of the fuel horizontal tank fleet management system","authors":"V. Spasibov, M. A. Kireeva","doi":"10.31660/0445-0108-2024-2-104-115","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-2-104-115","url":null,"abstract":"The active use of helicopter transportation to facilitate the construction and operation of oil and gas facilities in the Far North has resulted in the establishment of refueling points, which include fuel tank farms. The evaporation of fuel during the filling and storage of fuel in tanks is the primary cause of product loss, which results in economic damage and environmental pollution. The lack of scientifically substantiated technical solutions to prevent fuel losses means that it is not possible to completely eliminate fuel losses. The objective of this article is to develop a control system for a fleet of horizontal tanks that minimizes fuel losses. The development is based on a study of the factors affecting the volume of evaporation, which are divided into three categories: those that can be controlled, those that cannot be controlled, and those that can be controlled and influenced. The result is a schematic solution of the automated control system that performs condensation of fuel vapours evaporating in the process of tank farm operation, and also determines the priority of tank use depending on the value of vapour pressure in them. This makes it possible to reduce fuel losses by a factor of five.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"36 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141122265","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 : 2024-05-20DOI: 10.31660/0445-0108-2024-2-11-24
E. A. Lukyanenko, N. G. Kuzmina, D. V. Burdak
The article presents the hydrogeochemical characteristics of a field located in the West Siberian megabasin in Khanty-Mansiysk Autonomous Okrug — Ugra, the peculiarity of the hydrogeochemical conditions of which is confined to the elysium lithostatic system and inversion hydrogeochemical zonality. This is characterised by a decrease in mineralisation with depth and a change in formation water type. This is related to the transformation of organic and mineral matter in sedimentary rocks at the elision stage of the West Siberian megabasin development during their sinking and compaction. The object of placement of formation and used water is the Aptian-Albian-Cenomanian hydrogeological complex.The article calculates the compatibility of formation waters of the Aptian-Albian-Cenomanian hydrogeological complex and hosted waters, and also estimates the probability of swelling of clay minerals in the reservoirs of this complex.
{"title":"Нydrogeological characteristics and analysis of the compatibility of disposal and formation water at the field N in Western Siberia","authors":"E. A. Lukyanenko, N. G. Kuzmina, D. V. Burdak","doi":"10.31660/0445-0108-2024-2-11-24","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-2-11-24","url":null,"abstract":"The article presents the hydrogeochemical characteristics of a field located in the West Siberian megabasin in Khanty-Mansiysk Autonomous Okrug — Ugra, the peculiarity of the hydrogeochemical conditions of which is confined to the elysium lithostatic system and inversion hydrogeochemical zonality. This is characterised by a decrease in mineralisation with depth and a change in formation water type. This is related to the transformation of organic and mineral matter in sedimentary rocks at the elision stage of the West Siberian megabasin development during their sinking and compaction. The object of placement of formation and used water is the Aptian-Albian-Cenomanian hydrogeological complex.The article calculates the compatibility of formation waters of the Aptian-Albian-Cenomanian hydrogeological complex and hosted waters, and also estimates the probability of swelling of clay minerals in the reservoirs of this complex.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"25 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141120503","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 : 2024-05-20DOI: 10.31660/0445-0108-2024-2-93-103
K. Kadyrzhanov, A. Kozlovskiy, D. Shlimas, G. Moldabayeva
The use of ion modification methods associated with high-dose irradiation with low-energy ions is one of the promising ways to increase the resistance of materials to external influences, including high-temperature corrosion. The process of ionic modification involves creating a near-surface layer of material with a high dislocation density due to implantation effects. This inhibits destructive processes caused by corrosive oxidation or mechanical influences. In this work, using the ion modification method to improve the resistance to high temperature corrosion, the authors modified nitride coatings of the order of 500 nm thick. The main purpose of using the ion modification method was to increase the strength characteristics of nitride coatings against high-temperature corrosion, as well as to reduce the effects of coating degradation to mechanical softening and wear after corrosion tests. In the course of the studies, it was found that the use of low-energy irradiation with O2+ ions (40 keV) leads to an increase in the stability of strength characteristics during high-temperature corrosion (with prolonged heating in an oxygen-containing environment at a temperature 700 °C), as well as a decrease in wear in comparison with unmodified nitride coatings applied to the surface of 316L steel. The promise of these studies lies in the development of new methods for modifying steel structures, which will improve the efficiency of resistance to corrosion and mechanical damage, as well as increase the wear resistance of the surface under external mechanical influences. The possibility of increasing stability due to deformation inclusions caused by implantation makes it possible to increase corrosion resistance by increasing the resistance of materials to high-temperature oxidation.
{"title":"The prospects of applying ionic modification of nitride coatings to high temperature corrosion processes in the oil and gas industry","authors":"K. Kadyrzhanov, A. Kozlovskiy, D. Shlimas, G. Moldabayeva","doi":"10.31660/0445-0108-2024-2-93-103","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-2-93-103","url":null,"abstract":"The use of ion modification methods associated with high-dose irradiation with low-energy ions is one of the promising ways to increase the resistance of materials to external influences, including high-temperature corrosion. The process of ionic modification involves creating a near-surface layer of material with a high dislocation density due to implantation effects. This inhibits destructive processes caused by corrosive oxidation or mechanical influences. In this work, using the ion modification method to improve the resistance to high temperature corrosion, the authors modified nitride coatings of the order of 500 nm thick. The main purpose of using the ion modification method was to increase the strength characteristics of nitride coatings against high-temperature corrosion, as well as to reduce the effects of coating degradation to mechanical softening and wear after corrosion tests. In the course of the studies, it was found that the use of low-energy irradiation with O2+ ions (40 keV) leads to an increase in the stability of strength characteristics during high-temperature corrosion (with prolonged heating in an oxygen-containing environment at a temperature 700 °C), as well as a decrease in wear in comparison with unmodified nitride coatings applied to the surface of 316L steel. The promise of these studies lies in the development of new methods for modifying steel structures, which will improve the efficiency of resistance to corrosion and mechanical damage, as well as increase the wear resistance of the surface under external mechanical influences. The possibility of increasing stability due to deformation inclusions caused by implantation makes it possible to increase corrosion resistance by increasing the resistance of materials to high-temperature oxidation.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"15 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141119976","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 : 2024-05-20DOI: 10.31660/0445-0108-2024-2-79-92
N. G. Musakaev, M. P. Galchanskii
One of the main problems that have to be solved during the development of hydrocarbon deposits is the formation of gas hydrates in pipelines. In this regard, the article presents a preventive method to struggle against the formation of gas hydrate deposits on the pipes inner walls associated with the supply of a hydrate formation inhibitor to the gas stream. The research was conducted on the basis of a mathematical model of the wet hydrocarbon gas flow in a horizontal pipeline. The research object is to determine the minimum required consumption of methanol, in which there is no formation of gas hydrate deposits on the channel inner walls. The practical significance of this study is that it is aimed at reducing the risks associated with the formation of gas hydrates in pipelines. The numerical implementation of a mathematical model of natural gas flow in a horizontal channel is based on a sequential solution of a system of four differential equations by the Runge-Kutta method of 4 orders of accuracy, followed by a search for sequential approximations of the minimum inhibitor flow rate, in which the "gas + water ↔ gas hydrate phase" transition process does not occur on the inner surface of the channel. The article presents a calculation of the proportion of a hydrate formation inhibitor in the liquid phase by solving a cubic equation using the Cardano method. Based on the computational experiments results, graphs were constructed and interpreted of the dependencies of the minimum inhibitor consumption on the soil temperature, inlet gas pressure, total water concentration in the gas flow, initial gas temperature and total gas flow rate.
{"title":"Calculation of the required methanol consumption during the flow of wet hydrocarbon gas in a horizontal pipeline","authors":"N. G. Musakaev, M. P. Galchanskii","doi":"10.31660/0445-0108-2024-2-79-92","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-2-79-92","url":null,"abstract":"One of the main problems that have to be solved during the development of hydrocarbon deposits is the formation of gas hydrates in pipelines. In this regard, the article presents a preventive method to struggle against the formation of gas hydrate deposits on the pipes inner walls associated with the supply of a hydrate formation inhibitor to the gas stream. The research was conducted on the basis of a mathematical model of the wet hydrocarbon gas flow in a horizontal pipeline. The research object is to determine the minimum required consumption of methanol, in which there is no formation of gas hydrate deposits on the channel inner walls. The practical significance of this study is that it is aimed at reducing the risks associated with the formation of gas hydrates in pipelines. The numerical implementation of a mathematical model of natural gas flow in a horizontal channel is based on a sequential solution of a system of four differential equations by the Runge-Kutta method of 4 orders of accuracy, followed by a search for sequential approximations of the minimum inhibitor flow rate, in which the \"gas + water ↔ gas hydrate phase\" transition process does not occur on the inner surface of the channel. The article presents a calculation of the proportion of a hydrate formation inhibitor in the liquid phase by solving a cubic equation using the Cardano method. Based on the computational experiments results, graphs were constructed and interpreted of the dependencies of the minimum inhibitor consumption on the soil temperature, inlet gas pressure, total water concentration in the gas flow, initial gas temperature and total gas flow rate.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"46 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141121936","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 : 2024-05-20DOI: 10.31660/0445-0108-2024-2-67-78
A. V. Grezin, D. K. Sagitov
During 2019-2021, about half of well stock at West Siberian oil fields were shut down for a long period (up to one and a half year) due to oil production restrictions under the agreement between Russia and OPEC (Organization of the Petroleum Exporting Countries). There have never been such large-scale and prolonged shutdowns before. After starting from a long-term shutdown, the flow rate of some wells increased, while others decreased.The main aim of research is to assess the geological and technological factors affecting the results of starting wells after a long shutdown. Statistical methods were used, including multivariate regression analysis, assessing the influence of parameters on each other using trend lines on cross-plots, as well as constructing and comparing maps of geological and technological parameters.As a result, the influence of the duration of downtime, the simultaneity of shutdown of production and injection wells and compensation of production by injection was determined. That will help to reduce losses in case of repeated production restrictions by selecting optimal candidates for shutdown.
{"title":"Influence assessment of shut-in duration and well startup sequence in different geological and field conditions","authors":"A. V. Grezin, D. K. Sagitov","doi":"10.31660/0445-0108-2024-2-67-78","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-2-67-78","url":null,"abstract":"During 2019-2021, about half of well stock at West Siberian oil fields were shut down for a long period (up to one and a half year) due to oil production restrictions under the agreement between Russia and OPEC (Organization of the Petroleum Exporting Countries). There have never been such large-scale and prolonged shutdowns before. After starting from a long-term shutdown, the flow rate of some wells increased, while others decreased.The main aim of research is to assess the geological and technological factors affecting the results of starting wells after a long shutdown. Statistical methods were used, including multivariate regression analysis, assessing the influence of parameters on each other using trend lines on cross-plots, as well as constructing and comparing maps of geological and technological parameters.As a result, the influence of the duration of downtime, the simultaneity of shutdown of production and injection wells and compensation of production by injection was determined. That will help to reduce losses in case of repeated production restrictions by selecting optimal candidates for shutdown.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141120149","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 : 2024-05-20DOI: 10.31660/0445-0108-2024-2-43-55
E. Shvetsov, M. S. Tarasova
The study of the core material from well X in the Kshukskoye field is a crucial stage for accumulating data and extending our knowledge of the structure and composition of volcanic-sedimentary rocks in the Kamchatka Peninsula and adjacent territories. Due to the challenging characteristics of the rocks caused by high tectonic activity, the absence of reference horizons,ambiguous stratigraphic correlation, and the low knowledge of deposit parameters in the cross-section of the Kamchatka Peninsula fields, a comprehensive lithological and mineralogical study was conducted on all collected cores from well X in the Kshukskoye field. Taking into account the limited knowledge and ongoing disputes about the rock nomination accuracy, special attention was devoted to the deposits of the Utkholok suite of the Khattsk stage, the Upper subseries of the Oligocene series of the Paleogene system.The results obtained provide confirmation of the genesis of the rocks of the Utkholok suite. In accordance with the results of lithological and mineralogical studies of the core, the correct naming of the studied rocks is justified.
对克什克斯克耶油田 X 号井岩心材料的研究是积累数据和扩大我们对堪察加半岛及邻近地区火山沉积岩结构和组成的认识的关键阶段。由于构造活动频繁、缺乏参考地层、地层相关性不明确以及对堪察加半岛油田横断面上的沉积参数了解甚少，因此对从克舒克斯克耶油田 X 井采集的所有岩心进行了全面的岩性和矿物学研究。考虑到对岩石命名准确性的有限了解和目前存在的争议，特别关注了哈特茨克期乌特霍洛克岩组的沉积物，即古近纪系统渐新世系列的上亚系列。根据岩芯的岩石学和矿物学研究结果，对所研究的岩石进行正确命名是合理的。
{"title":"The lithological and petrographic characterization and genesis of rocks in the Utkholok suite of well X of the Kshukskoye field","authors":"E. Shvetsov, M. S. Tarasova","doi":"10.31660/0445-0108-2024-2-43-55","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-2-43-55","url":null,"abstract":"The study of the core material from well X in the Kshukskoye field is a crucial stage for accumulating data and extending our knowledge of the structure and composition of volcanic-sedimentary rocks in the Kamchatka Peninsula and adjacent territories. Due to the challenging characteristics of the rocks caused by high tectonic activity, the absence of reference horizons,ambiguous stratigraphic correlation, and the low knowledge of deposit parameters in the cross-section of the Kamchatka Peninsula fields, a comprehensive lithological and mineralogical study was conducted on all collected cores from well X in the Kshukskoye field. Taking into account the limited knowledge and ongoing disputes about the rock nomination accuracy, special attention was devoted to the deposits of the Utkholok suite of the Khattsk stage, the Upper subseries of the Oligocene series of the Paleogene system.The results obtained provide confirmation of the genesis of the rocks of the Utkholok suite. In accordance with the results of lithological and mineralogical studies of the core, the correct naming of the studied rocks is justified.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"40 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141122144","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：