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Title: EVALUATION OF THE APPLICABILITY OF BIODEGRADATION MARKERS FOR IDENTIFICATION OF THE BYPASSED OIL ZONES
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EVALUATION OF THE APPLICABILITY OF BIODEGRADATION MARKERS FOR IDENTIFICATION OF THE BYPASSED OIL ZONES
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1314-2704
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English
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21
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7.1
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• Prof. DSc. Oleksandr Trofymchuk, UKRAINE
• Prof. Dr. hab. oec. Baiba Rivza, LATVIA |
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The presented work highlights the general geochemical aspects and considers the theoretical basis of the method of geochemical monitoring of oil fields using the indicator of the quantitative ratio of organic compounds and their isomers - isobutane/butane. The object of the study are the microorganisms that can affect gas composition. The purpose of the work is to study the effect of microorganisms on the biodegradation of oil. The peculiarity of the oil composition will be used to search, delineate bypassed oil areas, and to monitor development of the field. Biodegradation of oils negatively affects its properties, thereby increasing the cost of its extraction and processing. In this regard, the study of biodegradation processes, namely, the establishment of the conditions for its course and the assessment of the microorganism activity effect on the composition of oil is an urgent task at the present time. In the course of the work, it was found that during the development of the field by the waterflooding method, the water cut of the reservoirs gradually increases and the area of the oil-water contact zone, where most of the microorganisms develop. As the intensity of field development increases, the isobutane / butane ratio increases. During the monitoring of the composition, it was noted that most of the deviations are accompanied by a noticeable change in the entire component composition of the gas. During the analysis, two large groups of anomalies were identified: anomalies associated with an increase in the gas compositional analysis and anomalies accompanied by a sharp increase in the percentage of methane in the total proportion of C1-C6.As a result of the analysis and comparison of the hydrodynamic and geochemical models of the site, maps of the density of residual mobile reserves were drawn, the most promising wells for additional development were identified.
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conference
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21st International Multidisciplinary Scientific GeoConference SGEM 2021
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21st International Multidisciplinary Scientific GeoConference SGEM 2021, 16 - 22 August, 2021
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Proceedings Paper
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STEF92 Technology
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SGEM International Multidisciplinary Scientific GeoConference
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci
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919-926
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16 - 22 August, 2021
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website
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cdrom
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7840
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reservoir water flooding; oil biodegradation; bypassed oil zones; gas chromatography
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