Search

Relevance. The ability to provide more accurate and efficient assessment and management of hydrocarbon production using software products for integrated field modeling. However, this approach requires an analysis of the source data quality, as well as the selection of the correct approach to creating models. Consistent and systematic work makes it possible to reproduce the actual situation with high accuracy in order to use the results obtained in further work. The integrated field model is a completely new approach to field development, when current work is based not on existing solutions, but on potential. Forecasting the behavior of the reservoir, wells and infrastructure, the collection system and the system for maintaining reservoir pressure allows for a comprehensive assessment of the possibilities of obtaining maximum oil and gas production while minimizing possible losses. Aim. Formation and analysis of an approach to setting up PVT-models of fluids, models of injection well stock, collection and transport systems and reservoir pressure maintenance systems by adapting parameters to actual data. Methods. Setting up and adapting injection well models; setting up and adapting collection system and pipeline models; approach to work with the reservoir pressure maintenance system. Results. The results obtained make it possible to adapt the components of the integrated model with an accuracy of over 95 %, which makes it possible to simulate the operating conditions of the field. Because of the analysis, tuning criteria were identified, and the minimum required set of parameters for high-quality adaptation of models was presented. Efficiency and accuracy of predictive calculations on adapted models has also been proven by comparing actual performance data with synthetic data. Based on the work done, we can conclude that the use of an integrated model shows us a high convergence with real data, which allows us to optimally approach the field development regime.

Relevance. Current situation, when an increasing number of subsoil users are moving towards the correct choice of a development system. Therefore, the applicability of integrated asset models is growing exponentially every year. One of the integrated approaches in the field of reservoir–well–ground infrastructure modeling is the use of Petroleum Experts software. This solution has successfully established itself in the international market due to the presence of a large number of various correlations suitable for certain geological conditions, as well as a complex methodology for calculating the tasks. Thanks to the above product, the tasks of calculating the inflow from a reservoir, well flow rate and infrastructure throughput analysis formed a single integrated solution for high-quality modeling of fields/groups of fields. In its turn, the Petroleum Experts Prosper software allows you to evaluate the efficiency of a well, as well as to obtain additional production through optimization calculations on a well model tuned to actual parameters. Aim. To form and analyze the approach to setting up component models (wells) by adapting parameters to actual data in order to obtain additional oil production. Methods. Setting up and adaptation of well models equipped with installations of electrical center pumps, setting up and adaptation of fountain wells, approach to working with a periodical fund, assessment of the effectiveness of the use of Prosper in terms of additional oil production. Results. The results obtained allow us to adapt well models with an accuracy of more than 95%, which simulates the operating mode of the mechanized and fountain mining fund in order to optimize and increase oil production. As a result of the analysis, the criteria for tuning wells were identified, and the minimum necessary set of parameters for high-quality adaptation of models was presented. The effectiveness and accuracy of the method by comparing the actual data on the regimes of the wells with synthetic are also proved. Based on the work done, we can conclude that the use of an integrated model shows us a high convergence with real data, which allows you to conduct optimization calculations with high accuracy with obtaining a result that provides the greatest effect.

Relevance. Modern approach to development of oil and gas fields. Digitalization and automation of hydrocarbon production allow not only to reducing the response time to possible deviations from the operating level of production, but also quickly making decisions on its further normalization. The use of modern software to create a reservoir model using the material balance method allows you to calculate current and predicted reservoir pressures depending on the amount of selected and injected fluid. With high-quality adaptation, the integration of the reservoir model, wells and collection system, in its turn, allows you to correctly approach the choice of a field development system, as well as correctly assess the possible potential of the field. Forecast calculations performed on an integrated model can form the basis for budget planning, as well as the basis for carrying out geological and technical activities on wells, commissioning new wells, and modernizing equipment and infrastructure. Moreover, group optimization calculation allows us to maximize additional oil production, taking into account all geological and technical constraints. Aim. Formation and analysis of an approach to setting up a reservoir model by adapting parameters using the material balance method; formation of a solution for adapting the integrated model, reconciliation of the results with actual data; carrying out an optimization calculation and obtaining additional oil production. Methods. Adjustment and adaptation of reservoir models using the material balance method; adjustment and adaptation of the integrated model of a field/group of fields; calculation of the forecast for a period of 30/90 days; optimization calculations. Results. The obtained results make it possible to adapt the components of the integrated model with an accuracy of ±5 %, which makes it possible to simulate the operating mode of the field. As a result of the analysis, tuning criteria were identified, and the minimum required set of parameters for a qualitative adaptation of the reservoir model and the collection system was presented. The effectiveness and accuracy of the tool are also proven by comparing actual data on operating modes with synthetic ones. Based on the work done, it can be concluded that the use of the integrated model shows us a high convergence with real data, which allows us to optimally approach the field development mode. Moreover, an optimization calculation was carried out to obtain additional oil production using the proposed solution, and a forecast for oil production for a period of 90 days was calculated, which was later confirmed when compared with actual data.

Link for citation: Korotkov R.N., Konovalov A.A., Ovcharenko D.M., Erofeev V.I. Binary mixture technology as a modern complex method of increasing oil recovery for the development of hard-to-recover reserves in the fields of Western Siberia. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2023, vol. 334, no. 9, рр. 146-153. In Rus. The relevance of the study is caused by the current situation, when subsoil users are trying to extract the maximum amount of oil in a short time, as a result of which the development system is mainly compiled incorrectly, the share of hard-to-recover reserves is growing every year. Therefore, there is an urgent need to develop residual reserves from the subsoil, which are often difficult to recover. One of the complex reservoir stimulation is thermal-gas-chemical stimulation, which is a method of extensive reservoir stimulation and describes a promising technology among other existing methods for enhanced oil recovery. Binary mixtures, in their turn, will increase oil recovery by an average of 5–10 %. Purpose: to study the effectiveness of the application of binary systems technology in order to increase oil recovery from reservoirs containing hard-to-recover hydrocarbon reserves. Methods: systematization of classification approaches in terms of hard-to-recover reserves, selection of the most relevant methods of enhanced oil recovery according to the efficiency criterion, analysis of Russian and foreign experience in the use of thermal-gas-chemical treatment, assessment of the technological and economic feasibility of using binary mixtures in analogous fields. Results. The use of binary mixtures makes it possible to increase oil recovery by 5–10 % on average. The principles of oil displacement using ammonium nitrate and the decomposition reaction product were studied, an analysis of pilot industrial tests both in Russia and abroad was reproduced, and current issues were studied. Various fields are also considered, which have already proved the positive dynamics of the development potential when using this technology. A preliminary assessment of the economic efficiency of thermal-gas-chemical treatment in the current state of the gas and oil industry in comparison with other methods of enhanced oil recovery is presented.