Structural Control on Hydrocarbon Accumulation in the Pannonian Basin, Hungary

Pogácsás, György; Mattick, Robert E.; Tari, Gábor; Várnai, Péter

doi:10.1007/978-94-011-0954-3_11

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…The presence of the saline water with high total dissolved solid content in the deeper overpressured system has been detected in the Pannonian and Pleistocene layers by geochemical methods at several locations. These areas could have significant importance for hydrocarbon and geothermal energy exploration (Pogácsás et al, 1994;Dövényi et al, 2005). As there is only very limited information about the hydrodynamic interplay between the two different reservoir regimes, numerical flow and heat transport modelling together with fracture network modelling would serve an effective tool to obtain more information and help understanding such a geological-hydrogeological system.…”

Section: Introductionmentioning

confidence: 99%

Hybrid numerical modelling of fluid and heat transport between the overpressured and gravitational flow systems of the Pannonian Basin

et al. 2018

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Fractured rock bodies are especially important in Hungary, where numerous hydrocarbon reservoirs and geothermal fields occur in the fractured crystalline basement of the Pannonian Basin. To simulate a 3D fracture network for both near well regions and at reservoir scale, a fractal geometry based DFN (discrete fracture network) modelling system (RepSim) was used. To perform numerical simulation of the geological-hydrogeological problem, in which the hydraulic interaction is investigated between porous and fractured rock bodies, a finite element modelling system called FeFlow was applied. Modelling results suggest that the protruding basement highs govern heat transfer and fluid flow like a "hydro-geothermal chimney" owing to their stratigraphic and structural position as well as favourable hydraulic and thermal conductivities. Thus such fractured basement highs are deemed prospective for further geothermal investigations.

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Section: Introductionmentioning

confidence: 99%

Hybrid numerical modelling of fluid and heat transport between the overpressured and gravitational flow systems of the Pannonian Basin

et al. 2018

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“…As most of these anticlines are the products of Pannonian (Pliocene) to Quaternary inversion of middle Miocene syn-rift half-grabens, a proper structural understanding of the core of the anticlines is critical for any future exploration efforts. (Dank, 1988;Pogácsás et al, 1994). The asymmetric nature of the surface anticline suggests an underlying master fault on the northern flank of the structure.…”

Section: The Lovászi Fieldmentioning

confidence: 99%

“…During the last 30 years many facets of inversion tectonics were addressed, including physical modeling (e.g., Mc-Clay, 1989, 1995Buchanan and McClay, 1991;Mitra and Islam, 1994;Eisenstadt and Withjack, 1995;Keller and Mc-Clay, 1995;Yamada and McClay, 2004;Panien et al, 2005;Amilibia et al, 2005;Bonini et al, 2011;Granado et al, 2017;Roma et al, 2018;Ferrer et al, 2017), numerical modeling (e.g., Panien et al, 2006;Buiter et al, 2009;Granado and Ruh, 2019 ), basin modeling (e.g., Neumaier et al, 2016Neumaier et al, , 2017Omodeo-Salé et al, 2019) and crustal-scale geodynamics (e.g., Ziegler et al, 1995;Cloetingh et al, 2008). Obviously, as 3D seismic reflection data became frequently used by the petroleum industry, more subsurface case studies addressed inversion tectonics quantitatively (e.g., Davies et al, 2004;Jackson and Larsen, 2008;Jackson et al, 2013;Reilly et al, 2017;Phillips et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Inversion tectonics: a brief petroleum industry perspective

Tari

Arbouille²,

Schléder

et al. 2020

Solid Earth

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Abstract. Inverted structures provide traps for petroleum exploration, typically four-way structural closures. As to the degree of inversion, based on a large number of worldwide examples seen in various basins, the most preferred petroleum exploration targets are mild to moderate inversion structures, defined by the location of the null points. In these instances, the closures have a relatively small vertical amplitude but are simple in a map-view sense and well imaged on seismic reflection data. Also, the closures typically cluster above the extensional depocenters which tend to contain source rocks providing petroleum charge during and after the inversion. Cases for strong or total inversion are generally not that common and typically are not considered as ideal exploration prospects, mostly due to breaching and seismic imaging challenges associated with the trap(s) formed early on in the process of inversion. Also, migration may become tortuous due to the structural complexity or the source rock units may be uplifted above the hydrocarbon generation window, effectively terminating the charge once the inversion has occurred. Cases of inversion tectonics can be grouped into two main modes. A structure develops in Mode I inversion if the syn-rift succession in the preexisting extensional basin unit is thicker than its post-rift cover including the pre- and syn-inversion part of it. In contrast, a structure evolves in Mode II inversion if the opposite syn- versus post-rift sequence thickness ratio can be observed. These two modes have different impacts on the petroleum system elements in any given inversion structure. Mode I inversion tends to develop in failed intracontinental rifts and proximal passive margins, and Mode II structures are associated with back-arc basins and distal parts of passive margins. For any particular structure the evidence for inversion is typically provided by subsurface data sets such as reflection seismic and well data. However, in many cases the deeper segments of the structure are either poorly imaged by the seismic data and/or have not been penetrated by exploration wells. In these cases the interpretation in terms of inversion has to rely on the regional understanding of the basin evolution with evidence for an early phase of crustal extension by normal faulting.

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“…The early studies in this line mostly depicted fault kinematics and fault patterns in sub-basins (e.g. POGÁCSÁS et al 1989POGÁCSÁS et al , 1994. For the point of view of palaeostresses a combination of data sets, namely surface fault-slip data and seismic profiles can give good results.…”

Section: Palaeostress Studies Between 2000 and 2010mentioning

confidence: 99%

Results, problems and future tasks of palaeostress and fault-slip analyses in the Pannonian Basin: the Hungarian contribution

Fodor

2019

Földt. Közl.

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In the Pannonian Basin fault-slip analysis and palaeostress determinations started in 1982–1984 by the work of Françoise Bergerat, Jacques Geyssant and Claude Lepvrier. After F. Bergerat introduced some Hungarian researchers to field and laboratory techniques, fault-slip analysis expanded into the Pannonian Basin in Hungary and in some adjacent areas, and is still going on. This paper reviews the results achieved during this ~35 year time span from a historical perspective, by the compilation of the determined Cenozoic stress fields, their temporal boundaries, and uncertainties. The model for the evolution of the stress field became more complicated, and more and more details in the deformation history were realised, both in the Alcapa and Tisza–Dacia units of the Pannonian Basin. The integration of palaeomagnetic and stress data indicated that some changes in stress axes (and in fault orientation) are due to vertical-axis block rotation, and are not real rotation of the external stress field itself. With the development of new approaches, like tilt test, combination of surface and subsurface fault data, radiometric age determination of deformed rocks, fine separation of fracture sets can be achieved and the multiple recurrences of stress fields with identical principal axes were demonstrated. The refined methods permitted the demonstration of basin-wide inhomogeneity of the stress field for some phases. However, the precise timing, the number of phases, separation of events with similar stress axes, and the variability of the maximal stress axes of a given stress field remain the major questions to be solved in the future. Rheological conditions of the deforming media and physical parameters of the fracturing will be the other future steps in research, to be achieved by studies of deformation bands, fluid inclusions, isotopes, in order to better understand the connection of deformation, subsidence, diagenesis, and fluid flow.

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Structural Control on Hydrocarbon Accumulation in the Pannonian Basin, Hungary

Cited by 6 publications

References 7 publications

Hybrid numerical modelling of fluid and heat transport between the overpressured and gravitational flow systems of the Pannonian Basin

Hybrid numerical modelling of fluid and heat transport between the overpressured and gravitational flow systems of the Pannonian Basin

Inversion tectonics: a brief petroleum industry perspective

Results, problems and future tasks of palaeostress and fault-slip analyses in the Pannonian Basin: the Hungarian contribution

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