Main Lessons from the Complex Study of Mihályi-Répcelak Natural Co2 Occurrence

3 Pages Posted: 4 Apr 2019 Last revised: 27 Oct 2020

See all articles by György Falus

György Falus

Eötvös Loránd University

Csilla Király

Eötvös Loránd University

Ágnes Szamosfalvi

Mining and Geological Survey of Hungary - Department of Hydrogeology and Geochemistry

Dóra Cseresznyés

Hungarian Academy of Sciences (HAS)

Viktória Forray

Eötvös Loránd University

Zsuzsanna Szabó

Eötvös Loránd University

Csaba Szabó

Eötvös Loránd University

Abstract

Prediction of the fate of the injected CO2 in geological formations strongly relies on geochemical modeling, laboratory and field testing. However, all of these approaches have their major drawbacks, either being much too simplistic and/or out of realistic timescales (1–100 days vs. 100–1000 years) for deep subsurface storage. Natural CO2 occurrences provide an exceptional opportunity to study long-term behavior of the scCO2-porewater-reservoir rock system. Despite their complex geologic evolution, these occurrences have been used lately to identify CO2-related reaction features as well as to test and fine-tune geochemical models. The Mihályi-Répcelak occurrence in NW Hungary, with core material available, not only provides a general insight into subsurface reaction processes related to CO2, but represents one of the largest deep saline aquifers in the Pannonian Basin, it also behaves as a natural laboratory for this potential Late Miocene saline reservoir. The multi-layered structure of the occurrence with separated hydrodynamic units enables the simultaneous analysis and the identification of reaction features both in the reservoirs and their sealing cap rocks providing a further step in understanding the long-term performance of storage complexes.

Keywords: Case studies, GHGT-14

Suggested Citation

Falus, György and Király, Csilla and Szamosfalvi, Ágnes and Cseresznyés, Dóra and Forray, Viktória and Szabó, Zsuzsanna and Szabó, Csaba, Main Lessons from the Complex Study of Mihályi-Répcelak Natural Co2 Occurrence. 14th Greenhouse Gas Control Technologies Conference Melbourne 21-26 October 2018 (GHGT-14) , Available at SSRN: https://ssrn.com/abstract=3365908 or http://dx.doi.org/10.2139/ssrn.3365908

György Falus

Eötvös Loránd University

Pazmany Peter setany 1A
Budapest, -- H1117
Hungary

Csilla Király

Eötvös Loránd University

Pazmany Peter setany 1A
Budapest, -- H1117
Hungary

Ágnes Szamosfalvi

Mining and Geological Survey of Hungary - Department of Hydrogeology and Geochemistry

1145 Budapest, Columbus street 17-23
Budapest, 1590
Hungary

Dóra Cseresznyés

Hungarian Academy of Sciences (HAS)

Budapest
Hungary

Viktória Forray

Eötvös Loránd University

Pazmany Peter setany 1A
Budapest, -- H1117
Hungary

Zsuzsanna Szabó (Contact Author)

Eötvös Loránd University ( email )

Pazmany Peter setany 1A
Budapest, -- H1117
Hungary

Csaba Szabó

Eötvös Loránd University

Pazmany Peter setany 1A
Budapest, -- H1117
Hungary

Do you have a job opening that you would like to promote on SSRN?

Paper statistics

Downloads
17
Abstract Views
229
PlumX Metrics