Organic Geochemistry of Crude Oils and Source Rocks, Békés Basin

Clayton, Jerry L.; Koncz, István; King, John D.; Tatár, Éva

doi:10.1007/978-94-011-0954-3_8

Cited by 13 publications

(9 citation statements)

References 20 publications

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“…The assumed composition of hydrocarbons (C 7+ and aromatics) indicates the presence of gas condensate or liquid hydrocarbons (e.g., light oil; [62]) in the fluid remnants trapped in the samples. This presumption is consistent with the American Petroleum Institute (API) gravities of the oils produced in the research area [63], indicating that the explored zones were not only active during ancient fluid conduction but also part of a more recent hydrocarbon system.…”

Section: Consequences For Migration Pathwayssupporting

confidence: 79%

Localisation of Ancient Migration Pathways inside a Fractured Metamorphic Hydrocarbon Reservoir in South-East Hungary

et al. 2020

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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.

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Section: Consequences For Migration Pathwayssupporting

confidence: 79%

Localisation of Ancient Migration Pathways inside a Fractured Metamorphic Hydrocarbon Reservoir in South-East Hungary

et al. 2020

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“…On the other hand, according to the available data (Koncz 1990;Clayton and Koncz 1994;Clayton et al 1994;Fekete et al 2010), the δ 13 C of oils accumulated in SE Hungary is more negative than that of the Miocenesourced Zala Basin oils. Iso-thickness map of the Pannonian Basin System with location of the Ng 1 well (after Horváth and Royden 1981) 88 Vető et al Many case studies deal with the hydrocarbon potential (HC pot ) of the Miocene source sediments in different parts of the PBS (e.g., Alajbeg et al 1990Alajbeg et al , 1996Šarković et al 1992;Clayton and Koncz 1994;Clayton et al 1994;Pap and Pap 1997;Barić et al 1998;Badics et al 2011), but sedimentological, paleontological, or even lithological information about them are rather parsimoniously provided.…”

Section: Introductionmentioning

confidence: 98%

“…1), is a classical petroleum province. Apart from the Jurassicsourced oil and gas in the Vienna Basin (Ladwein 1988) and the Triassic-sourced oil in the Zala Basin (Koncz 1990;Clayton and Koncz 1994), the bulk of the petroleum accumulated in the PBS is considered to be the product of marly, limy Miocene sediments, widely developed in the basin system.…”

Section: Introductionmentioning

confidence: 99%

“…The Miocene-sourced oils of Hungary form two distinctly different groups: while oils discovered in SE Hungary have been sourced from Late Middle Miocene and Late Miocene brackish and lake sediments, those discovered in the Zala and Drava Basins (SW Hungary) have been generated mostly in the Middle Miocene marine sediments (e.g., Koncz 1990;Šarković et al 1992;Clayton and Koncz 1994;Clayton et al 1994;Barić et al 2000;Hasenhüttl et al 2001;Lučić et al 2001;Troskot-Corbić et al 2009;Badics et al 2011;Király et al 2011). On the other hand, according to the available data (Koncz 1990;Clayton and Koncz 1994;Clayton et al 1994;Fekete et al 2010), the δ 13 C of oils accumulated in SE Hungary is more negative than that of the Miocenesourced Zala Basin oils.…”

Section: Introductionmentioning

confidence: 99%

“…Koncz (1990) reports that some oils of the Zala Basin are characterized by high pristane/phytane ratio (1.95-3.46) and relatively heavy C-isotopic composition (δ 13 C of the saturate fraction ranges between −23.5‰ and −21‰). Based on these indices and by making comparison with extracts of marine Middle Miocene sediments, Koncz (1990) and Clayton and Koncz (1994) think that the latter are the likely source rocks of the oils.…”

mentioning

confidence: 99%

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Benthic algae as major precursors of oil-prone kerogen – A case study from the Hungarian Middle Miocene

Vetö

Báldi

Ćorić

et al. 2016

Central European Geology

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This study is intended to clarify the depositional environment of a 180-m-thick, immature, limy Middle Miocene oil source rock interval, cored in the Zala Basin, western Hungary. For this purpose, a highly interdisciplinary approach was applied combining simple, standard micropaleontological, isotopic, and organic geochemical methods, rarely applied together. Foraminifera were studied for estimating bottom oxygenation and water depth, while nannoplankton biostratigraphy permitted for estimating the rate of sedimentation. The studied source rocks were deposited in a rather shallow sea, below well-oxygenated bottom water. The abundant epiphytic foraminiferal fauna proves that the bottom was densely inhabited by benthic algae, while the high δ 13 C org (>-22‰) clearly indicates massive benthic algal contribution to the kerogen. Mass accumulation rate of the limy upper part of the NN5 nannoplankton biozone, the oil source interval included, was very high (551 t/m 2 /Ma). In spite of moderate productivity and good oxygenation of the bottom, rapid accumulation of carbonate, produced partly by benthic algae, assured both the great relative weight of the marine organic components and their good preservation. Our results provide the first proof for the possibility of a major contribution of benthic algae to oil-prone kerogen.

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Structure of the Békés Basin Inferred from Seismic Reflection, Well and Gravity Data

Grow

Mattick

Bérczi-Makk³

et al. 1994

Basin Analysis in Petroleum Exploration

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Organic Geochemistry of Crude Oils and Source Rocks, Békés Basin

Cited by 13 publications

References 20 publications

Localisation of Ancient Migration Pathways inside a Fractured Metamorphic Hydrocarbon Reservoir in South-East Hungary

Localisation of Ancient Migration Pathways inside a Fractured Metamorphic Hydrocarbon Reservoir in South-East Hungary

Benthic algae as major precursors of oil-prone kerogen – A case study from the Hungarian Middle Miocene

Structure of the Békés Basin Inferred from Seismic Reflection, Well and Gravity Data

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