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Title: DEVELOPMENT OF METHODOLOGY FOR OPTIMAL CYCLIC INJECTION TECHNIQUES BASED ON MATHEMATICAL MODELING
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DEVELOPMENT OF METHODOLOGY FOR OPTIMAL CYCLIC INJECTION TECHNIQUES BASED ON MATHEMATICAL MODELING
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10.5593/sgem2024/1.1
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1314-2704
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English
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24
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1.1
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• Prof. DSc. Oleksandr Trofymchuk, UKRAINE
• Prof. Dr. hab. oec. Baiba Rivza, LATVIA |
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The study aims to identify the optimal operating conditions of wells to increase oil recovery without incurring additional costs for Enhanced Oil Recovery (EOR). The study analyzes various scenarios based on different properties of geological formations and wells.
This work was carried out using three-dimensional hydrodynamic modeling. These models represent a simplified hydrodynamic model of a real object, which was created for the purpose of analyzing the processes being studied, but does not claim to be a complete description of the geological structure. At the same time, when constructing synthetic hydrodynamic models, the geological and physical properties of the modeled formation were taken into account. One of the most critical field and technological parameters determining the effectiveness of cyclic flooding technologies is the duration of the half-cycle. Calculations show a strong increase in accumulated oil in calculations during cyclic flooding with a half-cycle length of 3 days. However, this result strongly depends on the formation's piezoelectric conductivity and the distance between the injection and production wells. The following two experiments were carried out to identify the influence of the direction of the well pattern on the relative increase in oil production. At the first stage, the grid was modified to position the wells at the center of the model's boundary area. At the second stage, the wells are located so that they are at a certain distance from the boundaries of the model. This experiment indicates that the orientation of the well pattern significantly affects the outcomes of cyclic waterflooding. The results remained consistent with a diagonal well arrangement irrespective of the model size. To select models with different rock parameters in order to determine the possibility of working in further projects, an experiment was conducted to determine the effectiveness of cyclic flooding in hydrophobic rock. The simulation results indicate that cyclic flooding is ineffective in hydrophobic reservoirs. This is explained by the inability of the rock to retain water in its pores, as a result of which the oil remains practically motionless. |
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conference
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Proceedings of 24th International Multidisciplinary Scientific GeoConference SGEM 2024
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24th International Multidisciplinary Scientific GeoConference SGEM 2024, 1 - 7 July, 2024
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.
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575-582
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1 - 7 July, 2024
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website
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9900
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enhanced oil recovery methods, cyclic waterflood, analysis, terrigenous reservoirs
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