Attila Schlakker Eötvös Loránd University

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1 Three dimensional subsidence, thermal, maturation and migration history model in the Jászság Basin
Attila Schlakker Eötvös Loránd University Dept. of Physical and Applied Geology Supervisor: György Pogácsás Dr.

2 Outline Study Area Basin modelling Subsidence history
Maturation history Results and conclusion

3 Study Area Jászság Basin 2650 km2 16 wells 2D seismic lines Area
Makó Trough Békés Basin Derecske Trough Base Pannonian (s.l.) Area boundary Seismic line 16 wells 2D seismic lines Modified after Csíky et al., 1987

4 Basin modelling After Horváth et al., 1986

5 Stratigraphy Pannonian (s.l.) (12-1.8) and Quaternary sediments
Endrőd Marl: deep basin, neritic Szolnok Formation: deep basin turbidites Algyő Formation: delta slope Újfalu Formation: delta front Zagyva Formation: delta plain Quaternary sediments: alluvial plain Modified after Császár (ed.), 1997 N S Zagyva Újfalu Algyő Szolnok Endrőd Juhász, 1992 in Haas et al., 2012

6 Lithologies/Petroleum System Elements
Lithostratigraphic unit Depositional environment Lihology Petroleum System Element Quaternary rocks alluvial plain SAND&SHALE reservoir/seal Zagyva Formation delta plain SAND&SILT Újfalu Formation delta front SANDSTONE reservoir Algyő Formation delta slope SHALE seal Szolnok Formation deep basin turbidites SHALEsand Endrőd Marl deep basin, neritic MARL source rock

7 Organic geochemistry Source rock: Endrőd Marl Mixed type III (~80%) &
Type II (~20%) kerogen Average TOC: 1.3 % Estimated HI: 320 mg HC/g TOC Endrőd Marl É Base Pannonian (s.l.) depth map (m) Modified after Csíky et al., 1987

8 Geothermics Two McKenzie Heat Flow models:
Moderate HF model: stretching factors – crust: 2, mantle: 4 High HF model: stretching factors – crust 2, mantle: 10 Heat Flow values at the study area (mW/m2) É Modified after Horváth et al., 2004

9 Heat Flow Calibration Heat Flow values at the study area (mW/m2)
Modified after Horváth et al., 2004

10 Subsidence history 9.2 Ma 8 Ma 6.8 Ma Present days 5.3 Ma
zagyvai + kvarter újfalui szolnoki algyői endrődi

11 Endrőd Formation maturation history
High Heat Flow 9.2 Ma 9.2 Ma Moderate Heat Flow 8 Ma immature oil wet gas dry gas overmature 8 Ma 6.8 Ma 6.8 Ma

12 Endrőd Formation maturation history
High Heat Flow Moderate Heat Flow 5.3 Ma 5.3 Ma immature oil wet gas dry gas overmature Present days Present days

13 Generated volume of Hydrocarbons (in Million m3)
Moderate Heat Flow Model: Gas: 1.5 E10^6 (=1,500 Billion m3) Oil: High Heat Flow Model: Gas: 7.19 E10^6 (=7,190 Billion m3) Oil: (Oil cracked by secondary cracking)

14 Results and Conclusions
Two scenarios: moderate and high Heat Flow models Mainly gas generated from the source rock Generated amount of hydrocarbons: ~5 times more in case of Higher Heat Flow model

15 Acknowledgement Hungarian Horizon Energy Ltd. Schlumberger Ltd.
Dr. György Pogácsás János Csizmeg, Levente Szabó, Gábor Varga (HHE Ltd.) Katalin Milota (MOL Plc.)

16 Thank you!

17 References Bordenave, M. L. (ed.) Applied Petroleum Geochemistry (1993): Editions Technip, Paris pp. Csíky G., Erdélyi Á., Jámbor Á., Kárpátiné Radó D., Kőrössy L., 1987: Magyarország pannóniai (s. l.) képződményei 5.3 – A peremartoni főcsoport = alsó-pannóniai képződmények talpmélység térképe – Magyar Állami Földtani Intézet, es térkép Haas, J. (ed.) Geology of Hungary Berlin; Heidelberg: Springer Verlag, 2012. 236 p. (Regional Geology Reviews; XXIV.) Császár, G. (ed.) Basic lithostratigraphic units of Hungary Budapest: MÁFI, 1997. 114 p. Horváth F., Bada G., Windhoffer G., Csontos L., Dövényi P., Fodor L., Grenerczy Gy., Síkhegyi F., Szafián P., Székely B., Timár G., Tóth L., Tóth T., 2004: A Pannon-medence jelenkori geodinamikájának atlasza: Euro- konform térképsorozat és magyarázó – Eötvös Loránd Tudományegyetem, Geofizikai Tanszék, Budapest Horváth F., Szalay A., Dövényi P., Rumpler J., : Structural and thermal evolution of the Pannonian basin: an overview – In BURRUS, J. (Eds.), 1986: Thermal modeling in sedimentary basins – IFP Research Conferences on Exploration, Editions Technip, Paris, Pepper, A.S., and P.J. Corvi, 1995, Simple kinetic models of petroleum formation: Part-III Modelling an open system: Marine and Petroleum Geology, v.12, p

18 Hydrogen Index Estimation
M. L. Bordenave, 1993

19 Paleo Water Depth Horváth et al., 1986