Oil and Gas Studies最新文献

{"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}

{"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}

{"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}

{"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}

{"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}

{"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}

{"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}

{"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}

{"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}

{"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}