Pub Date : 2024-07-11DOI: 10.31660/0445-0108-2024-3-148-159
O. Deryugina, E. Skvortsova, A. L. Savhenkov, D. A. Belov
The correct operation of heat exchange equipment has a direct impact on the quality of the products produced. The study of critical factors impeding the stable operation of equipment at petrochemical enterprises and the elimination of the main ones are of paramount importance. The primary challenge in the operation of heat exchange equipment is the quality of circulating water, which serves as the primary coolant. The analysis of circulating water and scale from an industrial site by the method of atomic emission spectrometry with inductively coupled plasma was performed, which made it possible to identify bottlenecks that impede the operation of the equipment. Scaling and the corrosive effects of water are the most detrimental. Furthermore, a methodology was devised to ascertain the elemental composition of solid deposits derived from heat exchange equipment. The malfunction of heat exchange equipment can give rise to significant issues in production. To prevent emergency production shutdowns, the authors of the article consider a method for improving the quality of circulating water by using the latest reagent, which can reduce the corrosive effect and reduce salt deposition inside heat exchangers. The proposed inhibitor offers a number of advantages, including a reduction in the environmental impact and high work efficiency.
{"title":"The quality of circulating water and its impact on the operation of heat exchange equipment at petrochemical enterprises","authors":"O. Deryugina, E. Skvortsova, A. L. Savhenkov, D. A. Belov","doi":"10.31660/0445-0108-2024-3-148-159","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-3-148-159","url":null,"abstract":" The correct operation of heat exchange equipment has a direct impact on the quality of the products produced. The study of critical factors impeding the stable operation of equipment at petrochemical enterprises and the elimination of the main ones are of paramount importance. The primary challenge in the operation of heat exchange equipment is the quality of circulating water, which serves as the primary coolant. The analysis of circulating water and scale from an industrial site by the method of atomic emission spectrometry with inductively coupled plasma was performed, which made it possible to identify bottlenecks that impede the operation of the equipment. Scaling and the corrosive effects of water are the most detrimental. Furthermore, a methodology was devised to ascertain the elemental composition of solid deposits derived from heat exchange equipment. The malfunction of heat exchange equipment can give rise to significant issues in production. To prevent emergency production shutdowns, the authors of the article consider a method for improving the quality of circulating water by using the latest reagent, which can reduce the corrosive effect and reduce salt deposition inside heat exchangers. The proposed inhibitor offers a number of advantages, including a reduction in the environmental impact and high work efficiency.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"126 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141657125","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 : 2024-07-11DOI: 10.31660/0445-0108-2024-3-135-147
D. Borgekov, K. B. Kaliyekperova, A. Kozlovskiy, G. Moldabayeva
Interest in lanthanum-strontium ferrite ceramics having mixed electron and oxygen-ion conductivity as well as good stability is due to the great potential for use as electrode materials for solid oxide fuel cells. The article presents the results of an assessment of alterations in the morphology and phase composition of ceramics based on lanthanum-strontium ferrite compounds obtained by solid-phase synthesis. This was done during simulation of conditions as close as possible to their operating conditions in the mode of elevated temperatures. The primary objective of the research is to alter theratio of the phase composition of ceramics under prolonged thermal exposure, simulating thermal ageing processes, and thus, oxidation processes that occur during long-term cyclic tests. The studies revealed that the presence of the Sr2Fe2O5 phase in the composition of ceramics results in enhanced resistance to corrosive oxidation processes during high-temperature corrosion. The data obtained on the change in the electrochemical characteristics of ceramics depending on the exposure time during the simulation of high-temperature degradation revealed that the most significant decreases were observed after 400-500 hours of consecutive tests at a temperature of 500-600 °C and after 250-300 hours at temperatures above 700 °C. Moreover, the reduction in the specific power is due to the formation of oxide inclusions in ceramics, resulting from the decomposition of the (La0.3Sr0.7)FeO4 phase in the composition of the ceramics. In turn, the presence of the Sr2Fe2O5 phase results in the formation of an oxidation-resistant structure, leading to less pronounced changes in specific power during measurement of parameters of electrochemical characteristics.
镧锶铁氧体陶瓷具有混合电子和氧离子传导性以及良好的稳定性，可用作固体氧化物燃料电池的电极材料，因此备受关注。文章介绍了对通过固相合成获得的基于镧锶铁氧体化合物的陶瓷的形态和相组成变化的评估结果。这项工作是在尽可能接近高温模式下的工作条件下模拟完成的。研究的主要目的是在长期热暴露条件下改变陶瓷相组成的热比率，模拟热老化过程，进而模拟在长期循环测试中发生的氧化过程。研究结果表明，陶瓷成分中含有 Sr2Fe2O5 相，可增强陶瓷在高温腐蚀过程中抵抗腐蚀性氧化过程的能力。在模拟高温降解过程中，陶瓷的电化学特性随暴露时间的变化而变化，所获得的数据显示，在温度为 500-600 °C 的条件下，经过 400-500 小时的连续试验后，以及在温度高于 700 °C 的条件下，经过 250-300 小时的试验后，陶瓷的电化学特性下降最为明显。此外，比功率的降低是由于陶瓷中氧化物夹杂物的形成，而氧化物夹杂物是由陶瓷成分中的（La0.3Sr0.7）FeO4 相分解产生的。反过来，由于 Sr2Fe2O5 相的存在，形成了抗氧化结构，导致在测量电化学特性参数时，比功率的变化不那么明显。
{"title":"Study of phase evolution and microstructural features when modeling operating conditions of fuel cells based on lanthanum-strontium ferrite compounds","authors":"D. Borgekov, K. B. Kaliyekperova, A. Kozlovskiy, G. Moldabayeva","doi":"10.31660/0445-0108-2024-3-135-147","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-3-135-147","url":null,"abstract":" Interest in lanthanum-strontium ferrite ceramics having mixed electron and oxygen-ion conductivity as well as good stability is due to the great potential for use as electrode materials for solid oxide fuel cells. The article presents the results of an assessment of alterations in the morphology and phase composition of ceramics based on lanthanum-strontium ferrite compounds obtained by solid-phase synthesis. This was done during simulation of conditions as close as possible to their operating conditions in the mode of elevated temperatures. The primary objective of the research is to alter theratio of the phase composition of ceramics under prolonged thermal exposure, simulating thermal ageing processes, and thus, oxidation processes that occur during long-term cyclic tests. The studies revealed that the presence of the Sr2Fe2O5 phase in the composition of ceramics results in enhanced resistance to corrosive oxidation processes during high-temperature corrosion. The data obtained on the change in the electrochemical characteristics of ceramics depending on the exposure time during the simulation of high-temperature degradation revealed that the most significant decreases were observed after 400-500 hours of consecutive tests at a temperature of 500-600 °C and after 250-300 hours at temperatures above 700 °C. Moreover, the reduction in the specific power is due to the formation of oxide inclusions in ceramics, resulting from the decomposition of the (La0.3Sr0.7)FeO4 phase in the composition of the ceramics. In turn, the presence of the Sr2Fe2O5 phase results in the formation of an oxidation-resistant structure, leading to less pronounced changes in specific power during measurement of parameters of electrochemical characteristics.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"135 39","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141656379","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: 10.31660/0445-0108-2024-3-114-124
R. F. Sharafutdinov, A. S. Samoilov, N. Y. Kolotygina
The intricate structure of the oil rim of oil and gas deposits is a determining factor in the peculiarities of its development. The exploitation of productive formations results in the depletion of oil reserves due to the uncontrolled withdrawal of gas. The application of an unbalanced oil withdrawal and waterflooding process results in a reduction in the oil recovery factor. The article considers the issue of enhancing the efficiency of oil rims exploitation technology, with a particular focus on the research conducted into the displacement process of oil by gas agents. The authors of the article present the applicability criteria of enhanced oil recovery technologies, which serve as a basis for selecting the method of stimulation of the reservoir based on its geological and physical characteristics. Additionally, the results of the technology efficiency assessment for each reservoir are presented, along with a justification for the application of enhanced oil recovery methods. Finally, the article justifies the choice of research objects based on the application of enhanced oil recovery methods for different fields. The results of the ranking led to the identification of the criteria that justified the sites for water-gas impact testing. The following sites were identified as suitable for water-gas impact testing: BU11 2 (Urengoy oil and gas condensate field), BT11 0, BT11 (Zapolyarnoye oil and gas condensate field), BU8-9 3 (Yen-Yakhinskoye oil and gas condensate field), BU9 2 (Pestsovoye oil and gas condensate field), PK1 (Tazovskoye oil and gas condensate field), ACh3 0, ACh3, ACh4, ACh5 (Yamburg oil and gas condensate field).
{"title":"The rationale behind the selection of objects for physical modeling based on geological and statistical data","authors":"R. F. Sharafutdinov, A. S. Samoilov, N. Y. Kolotygina","doi":"10.31660/0445-0108-2024-3-114-124","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-3-114-124","url":null,"abstract":" The intricate structure of the oil rim of oil and gas deposits is a determining factor in the peculiarities of its development. The exploitation of productive formations results in the depletion of oil reserves due to the uncontrolled withdrawal of gas. The application of an unbalanced oil withdrawal and waterflooding process results in a reduction in the oil recovery factor. The article considers the issue of enhancing the efficiency of oil rims exploitation technology, with a particular focus on the research conducted into the displacement process of oil by gas agents. The authors of the article present the applicability criteria of enhanced oil recovery technologies, which serve as a basis for selecting the method of stimulation of the reservoir based on its geological and physical characteristics. Additionally, the results of the technology efficiency assessment for each reservoir are presented, along with a justification for the application of enhanced oil recovery methods. Finally, the article justifies the choice of research objects based on the application of enhanced oil recovery methods for different fields. The results of the ranking led to the identification of the criteria that justified the sites for water-gas impact testing. The following sites were identified as suitable for water-gas impact testing: BU11 2 (Urengoy oil and gas condensate field), BT11 0, BT11 (Zapolyarnoye oil and gas condensate field), BU8-9 3 (Yen-Yakhinskoye oil and gas condensate field), BU9 2 (Pestsovoye oil and gas condensate field), PK1 (Tazovskoye oil and gas condensate field), ACh3 0, ACh3, ACh4, ACh5 (Yamburg oil and gas condensate field).","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"38 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141662107","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: 10.31660/0445-0108-2024-3-24-32
A. А. Kungurov, L. K. Alimchanova
The territorial affiliation of one field to different subsurface users gives rise to a number of problems when calculating hydrocarbon reserves and justifying calculation parameters. This is due to the lack of complete information on a cross-border field from one owner of the subsoil. The aim of the article is to demonstrate the problems of modeling and calculating reserves of cross-border deposits and proposals for their solution. The article briefly describes the history of geological exploration at the Krasnoleninskoye oil and gas condensate field and the history of modeling and calculating reserves. The difference in the correlation of productive layers is shown. Various methods of delineation of deposits within subsurface use sites are considered. The difficulties of modeling due to the presence of several subsurface users of one cross-border deposit are listed. Specific examples of problems of matching models and calculation of reserves of two subsurface users are given. The problem of combining several fields based on the results of geological exploration is outlined. Conclusions are drawn about the advantages of a single model of cross-border deposits and their benefits for the state. The solution to the problem is the exchange of accumulated geological and commercial information between neighboring subsoil users and an agreement on joint actions to study the field, including work on estimating reserves and on design solutions. Consequently, a unified geological model of the deposit will be established, along with uniform methodologies for classification, mining fund allocation, and the optimal distribution of production. Additionally, the resolution of tax authority-related issues will be facilitated.
{"title":"Problems of studying deposits with cross-border territories: a case study of the Krasnoleninskoye oil and gas condensate field (in the form of a discussion)","authors":"A. А. Kungurov, L. K. Alimchanova","doi":"10.31660/0445-0108-2024-3-24-32","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-3-24-32","url":null,"abstract":" The territorial affiliation of one field to different subsurface users gives rise to a number of problems when calculating hydrocarbon reserves and justifying calculation parameters. This is due to the lack of complete information on a cross-border field from one owner of the subsoil. The aim of the article is to demonstrate the problems of modeling and calculating reserves of cross-border deposits and proposals for their solution. The article briefly describes the history of geological exploration at the Krasnoleninskoye oil and gas condensate field and the history of modeling and calculating reserves. The difference in the correlation of productive layers is shown. Various methods of delineation of deposits within subsurface use sites are considered. The difficulties of modeling due to the presence of several subsurface users of one cross-border deposit are listed. Specific examples of problems of matching models and calculation of reserves of two subsurface users are given. The problem of combining several fields based on the results of geological exploration is outlined. Conclusions are drawn about the advantages of a single model of cross-border deposits and their benefits for the state. The solution to the problem is the exchange of accumulated geological and commercial information between neighboring subsoil users and an agreement on joint actions to study the field, including work on estimating reserves and on design solutions. Consequently, a unified geological model of the deposit will be established, along with uniform methodologies for classification, mining fund allocation, and the optimal distribution of production. Additionally, the resolution of tax authority-related issues will be facilitated.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"73 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141662905","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: 10.31660/0445-0108-2024-3-73-82
D. N. Zolnikov
The operational object under study has a high current water-cut and is at the final stage of development. The aim of the study is to assess the potential for polymer flooding at the object X of the deposit C through hydrodynamic calculations. Hydrodynamic modeling is performed on a synthetic model cut from a sector model of the reservoir. This model meets the criteria for selecting sites, corresponds to the parameters of a full-scale model. However, it is more detailed, which is why it was chosen to substantiate the effectiveness of polymer flooding. The model specifies the actual well location, which is in the most characteristic zone of the reservoir with the actual development system. The results of the hydrodynamic calculations demonstrated the technological efficiency of polymer flooding at the object X. The increase in the oil recovery factor was 1.85 %. Further plans include further laboratory studies of polymer solution properties, an economic assessment to select the optimal concentration and volume of polymer solution injection, and a decision on conducting pilot work.
所研究的作业对象具有较高的水流断面，处于开发的最后阶段。 研究的目的是通过流体力学计算，评估聚合物淹没矿床 C 的 X 对象的可能性。 水动力建模是在一个从水库扇形模型中切割出来的合成模型上进行的。该模型符合选址标准，与全尺寸模型的参数一致。不过，它更为详细，这也是选择它来证实聚合物淹没的有效性的原因。该模型指定了实际的井位，即实际开发系统中储层最具特征的区域。流体力学计算的结果表明，聚合物注水在 X 对象处的技术效率很高，采油系数提高了 1.85%。进一步的计划包括对聚合物溶液特性进行进一步的实验室研究，进行经济评估以选择最佳的聚合物溶液注入浓度和注入量，以及决定是否进行试点工作。
{"title":"An assessment of the potential of polymer flooding at an oil field in Western Siberia","authors":"D. N. Zolnikov","doi":"10.31660/0445-0108-2024-3-73-82","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-3-73-82","url":null,"abstract":" The operational object under study has a high current water-cut and is at the final stage of development. The aim of the study is to assess the potential for polymer flooding at the object X of the deposit C through hydrodynamic calculations. Hydrodynamic modeling is performed on a synthetic model cut from a sector model of the reservoir. This model meets the criteria for selecting sites, corresponds to the parameters of a full-scale model. However, it is more detailed, which is why it was chosen to substantiate the effectiveness of polymer flooding. The model specifies the actual well location, which is in the most characteristic zone of the reservoir with the actual development system. The results of the hydrodynamic calculations demonstrated the technological efficiency of polymer flooding at the object X. The increase in the oil recovery factor was 1.85 %. Further plans include further laboratory studies of polymer solution properties, an economic assessment to select the optimal concentration and volume of polymer solution injection, and a decision on conducting pilot work.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"14 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141661215","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: 10.31660/0445-0108-2024-3-83-99
A. S. Rusanov, A. S. Romanov, E. A. Reitblat, D. N. Glumov
Prerequisites for the study are selection of the optimal agent to maintain reservoir pressure and setting the optimal conditions under which the maximum condensate recovery factor is achieved. The aim of the article is to assess the technological efficiency of methods for increasing condensate recovery while maintaining reservoir pressure by injecting hydrocarbon (methane) and non-hydrocarbon (nitrogen, carbon dioxide) gases. The subject of this study is the Ach3-4 reservoir within the Novo-Urengoyskoye license area of the Urengoy field. The most effective methodology for identifying the stated issue is the outcome of hydrodynamic calculations conducted on a composite hydrodynamic model implemented in ECLIPSE 300 format. In order to model one of the sections of the Ach3-4 reservoir, a development element was selected in which the average parameters corresponded to those of the full-scale model. The efficiency of the selected methods was evaluated by comparing them with the baseline scenario, which represents the conventional approach to the development of the Ach3-4 reservoir on depletion. The injection start was set in a dynamic model after removal of 30, 50 and 85 % of gas initially in-place and at a steady pressure of 18, 37 and 40 MPa, provided that gas recovery factor was achieved on depletion. The technological efficiency of the development options was evaluated by examining the dynamics of the condensate recovery factor in relation to the dynamics of the gas recovery factor. The optimal option was identified based on the maximum value of the condensate recovery factor. The results of the studies conducted to increase condensate recovery from reservoirs indicate the effectiveness of using carbon dioxide as an agent. The condensate recovery factor depends on the ratio of injection and production wells, the time of the start of reservoir pressure maintenance and the number of pore volumes pumped. The efficiency of carbon dioxide injection at late stages of development increases dramatically when the minimum mixing pressure is reached.
{"title":"Simulating the reservoir pressure maintenance strategy by injecting HC and non-HC gases into the Achimov reservoirs","authors":"A. S. Rusanov, A. S. Romanov, E. A. Reitblat, D. N. Glumov","doi":"10.31660/0445-0108-2024-3-83-99","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-3-83-99","url":null,"abstract":" Prerequisites for the study are selection of the optimal agent to maintain reservoir pressure and setting the optimal conditions under which the maximum condensate recovery factor is achieved. The aim of the article is to assess the technological efficiency of methods for increasing condensate recovery while maintaining reservoir pressure by injecting hydrocarbon (methane) and non-hydrocarbon (nitrogen, carbon dioxide) gases. The subject of this study is the Ach3-4 reservoir within the Novo-Urengoyskoye license area of the Urengoy field. The most effective methodology for identifying the stated issue is the outcome of hydrodynamic calculations conducted on a composite hydrodynamic model implemented in ECLIPSE 300 format. In order to model one of the sections of the Ach3-4 reservoir, a development element was selected in which the average parameters corresponded to those of the full-scale model. The efficiency of the selected methods was evaluated by comparing them with the baseline scenario, which represents the conventional approach to the development of the Ach3-4 reservoir on depletion. The injection start was set in a dynamic model after removal of 30, 50 and 85 % of gas initially in-place and at a steady pressure of 18, 37 and 40 MPa, provided that gas recovery factor was achieved on depletion. The technological efficiency of the development options was evaluated by examining the dynamics of the condensate recovery factor in relation to the dynamics of the gas recovery factor. The optimal option was identified based on the maximum value of the condensate recovery factor. The results of the studies conducted to increase condensate recovery from reservoirs indicate the effectiveness of using carbon dioxide as an agent. The condensate recovery factor depends on the ratio of injection and production wells, the time of the start of reservoir pressure maintenance and the number of pore volumes pumped. The efficiency of carbon dioxide injection at late stages of development increases dramatically when the minimum mixing pressure is reached.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"11 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141662011","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: 10.31660/0445-0108-2024-3-58-72
A. M. Sheshukova, E. V. Smirnova, S. V. Vasyanina
Issues of practical application of the results of seismic facies analysis are of concern to subsoil users and specialists from scientific institutes in the oil and gas industry. It is not always evident what contribution this work makes to the outcome of geological modeling and what significance it has when integrating materials from areal seismic studies, geophysical well surveys andcore data. At the same time, interest in this type of work decreases as fields are drilled, although with increasing well data, the reliability of the results of seismic facies analysis increases significantly, and additional opportunities arise to search for promising and undeveloped zones of the deposit. In this regard, the main objective of the article is to remind the public of the importance of this component of geological modeling, to illustrate the practical applications of seismic facies analysis, and to present various approaches to seismic facies mapping. The article describes approaches to seismic facies analysis at different stages of exploration of promising areas and fields, taking into account 2D and 3D seismic exploration. It is noted that the use of neural networks for calculating seismic classes makes it possible to work with different input data, including volumetric cubes of digital material and two-dimensional maps constructed from the results of seismic exploration. Attention is a paid to the role of seismic facies analysis in creating geological models and assessing the resource base. An option is a shown for calculating a three-dimensional cube of lithology and reservoir properties taking into account seismic facies analysis and lithofacies analysis with a brief description of modeling algorithms. The impact of seismic facies analysis and lithofacies analysis results on the distribution of reservoirs within the three-dimensional geological model is illustrated through the example of the simulation area. Furthermore, the mapping of zones of probable claying of the productive formation is demonstrated.
{"title":"Experience in seismic facies analysis application during prospecting and exploration","authors":"A. M. Sheshukova, E. V. Smirnova, S. V. Vasyanina","doi":"10.31660/0445-0108-2024-3-58-72","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-3-58-72","url":null,"abstract":" Issues of practical application of the results of seismic facies analysis are of concern to subsoil users and specialists from scientific institutes in the oil and gas industry. It is not always evident what contribution this work makes to the outcome of geological modeling and what significance it has when integrating materials from areal seismic studies, geophysical well surveys andcore data. At the same time, interest in this type of work decreases as fields are drilled, although with increasing well data, the reliability of the results of seismic facies analysis increases significantly, and additional opportunities arise to search for promising and undeveloped zones of the deposit. In this regard, the main objective of the article is to remind the public of the importance of this component of geological modeling, to illustrate the practical applications of seismic facies analysis, and to present various approaches to seismic facies mapping. The article describes approaches to seismic facies analysis at different stages of exploration of promising areas and fields, taking into account 2D and 3D seismic exploration. It is noted that the use of neural networks for calculating seismic classes makes it possible to work with different input data, including volumetric cubes of digital material and two-dimensional maps constructed from the results of seismic exploration. Attention is a paid to the role of seismic facies analysis in creating geological models and assessing the resource base. An option is a shown for calculating a three-dimensional cube of lithology and reservoir properties taking into account seismic facies analysis and lithofacies analysis with a brief description of modeling algorithms. The impact of seismic facies analysis and lithofacies analysis results on the distribution of reservoirs within the three-dimensional geological model is illustrated through the example of the simulation area. Furthermore, the mapping of zones of probable claying of the productive formation is demonstrated.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"1 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141658763","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: 10.31660/0445-0108-2024-3-125-134
A. B. Yumachikov, M. V. Fudashkina, E. N. Malshakov, M. N. Vilkov, I. I. Khakimov, K. V. Solodovnikov
The article considers the experience of applying bottomhole zone treatment technology without setting up of workover, and reveals the problem of a lack of significant effect of the measures. Proposals for the simplification of technology have been formulated, an instruction for implementation and a register of designs of contactless treatments for solving a wide range of tasks related to bottomhole zone treatment has been developed. Following the selection of candidate wells and the testing of the developed approaches, a benchmarking exercise was conducted at LUKOIL-West Siberia LLC. The work performed led to an increase in the efficiency and economic profitability of contactless treatment.
{"title":"New approaches to the technology of acid treatment of the bottomhole zone without setting up of workover","authors":"A. B. Yumachikov, M. V. Fudashkina, E. N. Malshakov, M. N. Vilkov, I. I. Khakimov, K. V. Solodovnikov","doi":"10.31660/0445-0108-2024-3-125-134","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-3-125-134","url":null,"abstract":" The article considers the experience of applying bottomhole zone treatment technology without setting up of workover, and reveals the problem of a lack of significant effect of the measures. Proposals for the simplification of technology have been formulated, an instruction for implementation and a register of designs of contactless treatments for solving a wide range of tasks related to bottomhole zone treatment has been developed. Following the selection of candidate wells and the testing of the developed approaches, a benchmarking exercise was conducted at LUKOIL-West Siberia LLC. The work performed led to an increase in the efficiency and economic profitability of contactless treatment.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"18 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141660867","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: 10.31660/0445-0108-2024-3-11-23
T. V. Glukhov
The investigation of Upper Cretaceous siliceous deposits in West Siberia represents an unconventional problem. The solution to this problem necessitates the utilisation of specialised well logging methods in order to obtain the valuable results. In these circumstances, forecast methods that based on a priori data become important because they allow us to identify high-priority objects for further exploration. The aim of this research is to make a forecast of the gas saturation factor in the NB1 layer of Upper Cretaceous deposits within the Nadym-Pur-Taz region under conditions of well-data shortage. The new forecast and mapping method for the volumetric humidity coefficient that based on a priori data is proposed. Consequently, a correlation was identified between the volumetric humidity coefficient and the present depth of deposits. The correlation depends on intensity of silica phase transformation process. The observed dependence is attributed to the tectonic history of the region, specifically the period following the deposition of the NB1 layer siliceous deposits. The gas saturation factor forecast map allows us to identify areas with potential of high gas bearing capacity.
{"title":"A forecast of the gas saturation factor in the NB1 layer of Upper Cretaceous deposits within the Nadym-Pur-Taz region of West Siberia","authors":"T. V. Glukhov","doi":"10.31660/0445-0108-2024-3-11-23","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-3-11-23","url":null,"abstract":" The investigation of Upper Cretaceous siliceous deposits in West Siberia represents an unconventional problem. The solution to this problem necessitates the utilisation of specialised well logging methods in order to obtain the valuable results. In these circumstances, forecast methods that based on a priori data become important because they allow us to identify high-priority objects for further exploration. The aim of this research is to make a forecast of the gas saturation factor in the NB1 layer of Upper Cretaceous deposits within the Nadym-Pur-Taz region under conditions of well-data shortage. The new forecast and mapping method for the volumetric humidity coefficient that based on a priori data is proposed. Consequently, a correlation was identified between the volumetric humidity coefficient and the present depth of deposits. The correlation depends on intensity of silica phase transformation process. The observed dependence is attributed to the tectonic history of the region, specifically the period following the deposition of the NB1 layer siliceous deposits. The gas saturation factor forecast map allows us to identify areas with potential of high gas bearing capacity.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"37 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141659194","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: 10.31660/0445-0108-2024-3-44-57
S. K. Turenko
Neural network analysis represents a promising avenue for enhancing the efficacy of petroleum geophysics and the oil and gas industry. The analysis of the obtained experience of using the available neural network analysis methods and software packages in solving problems of oil and gas geophysics shows the absence of a significant (breakthrough) effect. In order to achieve a significant effect, it is proposed to move from methods to neural network analysis technologies. The article presents a fundamental framework for neural network analysis technology in the context of oil and gas geophysics. This includes a neural network designer, a subsystem for training geophysicists in the field of neural network analysis, a digital polygon, and a knowledge base comprising tasks, neural network analysis methods, techniques, and experience in solving applied problems. The elements of the proposed technology and their interrelation are discussed in detail. The pilot version of the proposed technology, which includes its principal elements, is initially described in terms of its orientation towards the training of specialists. The results of the pilot version's approval have demonstrated the efficacy of the proposed technology. The scientific and technological priorities of the proposed technology development have been delineated.
{"title":"Developing neural network analysis technology for the resolution of issues in oil and gas geophysics","authors":"S. K. Turenko","doi":"10.31660/0445-0108-2024-3-44-57","DOIUrl":"https://doi.org/10.31660/0445-0108-2024-3-44-57","url":null,"abstract":" Neural network analysis represents a promising avenue for enhancing the efficacy of petroleum geophysics and the oil and gas industry. The analysis of the obtained experience of using the available neural network analysis methods and software packages in solving problems of oil and gas geophysics shows the absence of a significant (breakthrough) effect. In order to achieve a significant effect, it is proposed to move from methods to neural network analysis technologies. The article presents a fundamental framework for neural network analysis technology in the context of oil and gas geophysics. This includes a neural network designer, a subsystem for training geophysicists in the field of neural network analysis, a digital polygon, and a knowledge base comprising tasks, neural network analysis methods, techniques, and experience in solving applied problems. The elements of the proposed technology and their interrelation are discussed in detail. The pilot version of the proposed technology, which includes its principal elements, is initially described in terms of its orientation towards the training of specialists. The results of the pilot version's approval have demonstrated the efficacy of the proposed technology. The scientific and technological priorities of the proposed technology development have been delineated.","PeriodicalId":240239,"journal":{"name":"Oil and Gas Studies","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141662058","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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