Localisation of Ancient Migration Pathways inside a Fractured Metamorphic Hydrocarbon Reservoir in South-East Hungary
Numerous fractured hydrocarbon reservoirs exist in the metamorphic basement of the Pannonian Basin in Hungary. Many decades of experience in production have proven that these reservoirs are highly compartmentalised, resulting in a complex mosaic of permeable and impermeable domains situated next to...
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MDPI AG
2020-10-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/20/7321 |
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| author | Tivadar M. Tóth László Molnár Sándor Körmös Nóra Czirbus Félix Schubert |
| author_facet | Tivadar M. Tóth László Molnár Sándor Körmös Nóra Czirbus Félix Schubert |
| author_sort | Tivadar M. Tóth |
| collection | DOAJ |
| description | Numerous fractured hydrocarbon reservoirs exist in the metamorphic basement of the Pannonian Basin in Hungary. Many decades of experience in production have proven that these reservoirs are highly compartmentalised, resulting in a complex mosaic of permeable and impermeable domains situated next to each other. Consequently, in most fields, only a small amount of the total hydrocarbon reserve can be extracted. This paper aims to locate the potential migration pathways inside the most productive basement reservoir of the Pannonian Basin, using a multiscale approach. To achieve this, evaluation well-log data, DFN modelling and a composition analysis of fluid trapped in a vein-filling zeolite phase are combined. Data on a single well are presented as an example. The results of the three approaches indicate the presence of two highly fractured intervals separated by a barely fractured amphibolite. The two zones are probably part of the communicating fracture system inside the single metamorphic mass. The gas analysis further specifies the migrated fluids and indicates hydrocarbons of a composition similar to that of the recently produced oil. Consequently, we conclude that the two zones do not only form an ancient migration pathway but are also members of a more recent hydrocarbon system. |
| first_indexed | 2024-03-10T15:29:10Z |
| format | Article |
| id | doaj.art-00616ffabe0e4c89bd6f69285c9adc2d |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T15:29:10Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-00616ffabe0e4c89bd6f69285c9adc2d2023-11-20T17:43:25ZengMDPI AGApplied Sciences2076-34172020-10-011020732110.3390/app10207321Localisation of Ancient Migration Pathways inside a Fractured Metamorphic Hydrocarbon Reservoir in South-East HungaryTivadar M. Tóth0László Molnár1Sándor Körmös2Nóra Czirbus3Félix Schubert4Department of Mineralogy, Geochemistry and Petrology, University of Szeged, 6720 Szeged, HungaryDepartment of Mineralogy, Geochemistry and Petrology, University of Szeged, 6720 Szeged, HungaryDepartment of Mineralogy, Geochemistry and Petrology, University of Szeged, 6720 Szeged, HungaryDepartment of Mineralogy, Geochemistry and Petrology, University of Szeged, 6720 Szeged, HungaryDepartment of Mineralogy, Geochemistry and Petrology, University of Szeged, 6720 Szeged, HungaryNumerous fractured hydrocarbon reservoirs exist in the metamorphic basement of the Pannonian Basin in Hungary. Many decades of experience in production have proven that these reservoirs are highly compartmentalised, resulting in a complex mosaic of permeable and impermeable domains situated next to each other. Consequently, in most fields, only a small amount of the total hydrocarbon reserve can be extracted. This paper aims to locate the potential migration pathways inside the most productive basement reservoir of the Pannonian Basin, using a multiscale approach. To achieve this, evaluation well-log data, DFN modelling and a composition analysis of fluid trapped in a vein-filling zeolite phase are combined. Data on a single well are presented as an example. The results of the three approaches indicate the presence of two highly fractured intervals separated by a barely fractured amphibolite. The two zones are probably part of the communicating fracture system inside the single metamorphic mass. The gas analysis further specifies the migrated fluids and indicates hydrocarbons of a composition similar to that of the recently produced oil. Consequently, we conclude that the two zones do not only form an ancient migration pathway but are also members of a more recent hydrocarbon system.https://www.mdpi.com/2076-3417/10/20/7321Pannonian Basinfractured reservoirwell-logDFN modellingfluid inclusion chemostratigraphy |
| spellingShingle | Tivadar M. Tóth László Molnár Sándor Körmös Nóra Czirbus Félix Schubert Localisation of Ancient Migration Pathways inside a Fractured Metamorphic Hydrocarbon Reservoir in South-East Hungary Applied Sciences Pannonian Basin fractured reservoir well-log DFN modelling fluid inclusion chemostratigraphy |
| title | Localisation of Ancient Migration Pathways inside a Fractured Metamorphic Hydrocarbon Reservoir in South-East Hungary |
| title_full | Localisation of Ancient Migration Pathways inside a Fractured Metamorphic Hydrocarbon Reservoir in South-East Hungary |
| title_fullStr | Localisation of Ancient Migration Pathways inside a Fractured Metamorphic Hydrocarbon Reservoir in South-East Hungary |
| title_full_unstemmed | Localisation of Ancient Migration Pathways inside a Fractured Metamorphic Hydrocarbon Reservoir in South-East Hungary |
| title_short | Localisation of Ancient Migration Pathways inside a Fractured Metamorphic Hydrocarbon Reservoir in South-East Hungary |
| title_sort | localisation of ancient migration pathways inside a fractured metamorphic hydrocarbon reservoir in south east hungary |
| topic | Pannonian Basin fractured reservoir well-log DFN modelling fluid inclusion chemostratigraphy |
| url | https://www.mdpi.com/2076-3417/10/20/7321 |
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