Geoelectric Models of Lower Cretaceous Deposits of the Latitudinal Ob Region Based on the Results of Multilayer Inversion of Electrical Logging Data
The article considers the results of applying a multi-layer approach to the quantitative interpretation of electrical and induction logging data in vertical wells for formation evaluation of the Achimov formation in the central part of Western Siberia. Interpretation of electrical logging data by co...
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| Language: | English |
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Georesursy Ltd.
2024-12-01
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| Series: | Georesursy |
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| Online Access: | https://www.geors.ru/jour/article/view/423 |
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| author | M. I. Epov S. A. Primakov K. V. Sukhorukova D. S. Lezhnin |
| author_facet | M. I. Epov S. A. Primakov K. V. Sukhorukova D. S. Lezhnin |
| author_sort | M. I. Epov |
| collection | DOAJ |
| description | The article considers the results of applying a multi-layer approach to the quantitative interpretation of electrical and induction logging data in vertical wells for formation evaluation of the Achimov formation in the central part of Western Siberia. Interpretation of electrical logging data by conventional methods often leads to errors in estimating the oil saturation of thin reservoirs due to the complex apparent resistivity logs, which are significantly influenced by the high-contrast invaded zones and shoulder beds. The approach proposed at Institute of Petroleum Geology and Geophysics of the Siberian Branch of the Russian Academy of Sciences is based on joint multilayer 2D inversion of signals from a complex of galvanic and induction probes. The signals are calculated using a verified finite element algorithm. This naturally takes into account changes in the well diameter and drilling mud resistivity, radial and vertical distribution of electrical properties in the section, different sensitivity of the signals to various elements of the environment around the logging tool, as well as design parameters of the most common Russian electrical logging tools. The approach has been tested on logging data provided under an agreement with SNIIGGiMS. Geoelectric models of Lower Cretaceous deposits were built for several dozen wells, typical examples of which are given in the article. |
| format | Article |
| id | doaj-art-7680c1cb56e948daa618bb93c9da41fb |
| institution | Kabale University |
| issn | 1608-5043 1608-5078 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Georesursy Ltd. |
| record_format | Article |
| series | Georesursy |
| spelling | doaj-art-7680c1cb56e948daa618bb93c9da41fb2025-08-20T03:51:24ZengGeoresursy Ltd.Georesursy1608-50431608-50782024-12-0126415316210.18599/grs.2024.4.19290Geoelectric Models of Lower Cretaceous Deposits of the Latitudinal Ob Region Based on the Results of Multilayer Inversion of Electrical Logging DataM. I. Epov0S. A. Primakov1K. V. Sukhorukova2D. S. Lezhnin3Trofimuk Institute of Petroleum Geology and Geophysics of the Siberian Branch of the Russian Academy of Sciences; Siberian Research Institute of Geology, Geophysics and Mineral Raw Materials (JSC SNIIGGiMS)Trofimuk Institute of Petroleum Geology and Geophysics of the Siberian Branch of the Russian Academy of SciencesTrofimuk Institute of Petroleum Geology and Geophysics of the Siberian Branch of the Russian Academy of SciencesSiberian Research Institute of Geology, Geophysics and Mineral Raw Materials (JSC SNIIGGiMS)The article considers the results of applying a multi-layer approach to the quantitative interpretation of electrical and induction logging data in vertical wells for formation evaluation of the Achimov formation in the central part of Western Siberia. Interpretation of electrical logging data by conventional methods often leads to errors in estimating the oil saturation of thin reservoirs due to the complex apparent resistivity logs, which are significantly influenced by the high-contrast invaded zones and shoulder beds. The approach proposed at Institute of Petroleum Geology and Geophysics of the Siberian Branch of the Russian Academy of Sciences is based on joint multilayer 2D inversion of signals from a complex of galvanic and induction probes. The signals are calculated using a verified finite element algorithm. This naturally takes into account changes in the well diameter and drilling mud resistivity, radial and vertical distribution of electrical properties in the section, different sensitivity of the signals to various elements of the environment around the logging tool, as well as design parameters of the most common Russian electrical logging tools. The approach has been tested on logging data provided under an agreement with SNIIGGiMS. Geoelectric models of Lower Cretaceous deposits were built for several dozen wells, typical examples of which are given in the article.https://www.geors.ru/jour/article/view/4232d geoelectric modeljoint multilayer numerical inversionunfocused lateral logginglateral logginginduction logginglower cretaceous reservoirsachimov deposits |
| spellingShingle | M. I. Epov S. A. Primakov K. V. Sukhorukova D. S. Lezhnin Geoelectric Models of Lower Cretaceous Deposits of the Latitudinal Ob Region Based on the Results of Multilayer Inversion of Electrical Logging Data Georesursy 2d geoelectric model joint multilayer numerical inversion unfocused lateral logging lateral logging induction logging lower cretaceous reservoirs achimov deposits |
| title | Geoelectric Models of Lower Cretaceous Deposits of the Latitudinal Ob Region Based on the Results of Multilayer Inversion of Electrical Logging Data |
| title_full | Geoelectric Models of Lower Cretaceous Deposits of the Latitudinal Ob Region Based on the Results of Multilayer Inversion of Electrical Logging Data |
| title_fullStr | Geoelectric Models of Lower Cretaceous Deposits of the Latitudinal Ob Region Based on the Results of Multilayer Inversion of Electrical Logging Data |
| title_full_unstemmed | Geoelectric Models of Lower Cretaceous Deposits of the Latitudinal Ob Region Based on the Results of Multilayer Inversion of Electrical Logging Data |
| title_short | Geoelectric Models of Lower Cretaceous Deposits of the Latitudinal Ob Region Based on the Results of Multilayer Inversion of Electrical Logging Data |
| title_sort | geoelectric models of lower cretaceous deposits of the latitudinal ob region based on the results of multilayer inversion of electrical logging data |
| topic | 2d geoelectric model joint multilayer numerical inversion unfocused lateral logging lateral logging induction logging lower cretaceous reservoirs achimov deposits |
| url | https://www.geors.ru/jour/article/view/423 |
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