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Energies
Volume 18
Issue 14
10.3390/en18143800
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Article

Climbing the Pyramid: From Regional to Local Assessments of CO2 Storage Capacities in Deep Saline Aquifers of the Drava Basin, Pannonian Basin System

by
Iva Kolenković Močilac
1,
Marko Cvetković
1,*,
David Rukavina
1,
Ana Kamenski
1,2,
Marija Pejić
1 and
Bruno Saftić
1
1
University of Zagreb, Faculty of Mining, Geology and Petroleum Engineering, Pierottijeva 6, 10000 Zagreb, Croatia
2
Croatian Geological Survey, Department of Geology, Sachsova 2, 10000 Zagreb, Croatia
*
Author to whom correspondence should be addressed.
Energies 2025, 18(14), 3800; https://doi.org/10.3390/en18143800 (registering DOI)
Submission received: 13 June 2025 / Revised: 7 July 2025 / Accepted: 14 July 2025 / Published: 17 July 2025
(This article belongs to the Collection Feature Papers in Carbon Capture, Utilization, and Storage)
Versions Notes

Abstract

Deep saline aquifers in the eastern part of Drava Basin were screened for potential storage sites. The input dataset included three seismic volumes, a rather extensive set of old seismic sections and 71 wells. Out of all identified potential storage objects, only two sites were found to be situated in the favorable geological settings, meaning that the inspected wells drilled through structural traps had a seal at least 20 m thick which was intersected by only a few faults with rather limited displacement. Many more closed structures in the area were tested by exploration wells, but in all other wells, various problems were encountered, including inadequate reservoir properties, inadequate seal or inadequate depth of the identified trap. Analysis was highly affected by the insufficient quality and spatial distribution of the seismic input data, as well as in places with insufficient quality of input well datasets. An initial characterization of identified storage sites was performed, and their attributes were compared, with potential storage object B recognized as the one that should be further developed. However, given the depth and increased geothermal gradient of the potential storage object B, it is possible that it will be developed as a geothermal reservoir, and this brings forward the problem of concurrent subsurface use.
Keywords: CO2 storage; deep saline aquifers; site screening; Drava Basin; Pannonian Basin System; syn-rift clastic sediments; Upper Miocene sandstones CO2 storage; deep saline aquifers; site screening; Drava Basin; Pannonian Basin System; syn-rift clastic sediments; Upper Miocene sandstones

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MDPI and ACS Style

Kolenković Močilac, I.; Cvetković, M.; Rukavina, D.; Kamenski, A.; Pejić, M.; Saftić, B. Climbing the Pyramid: From Regional to Local Assessments of CO2 Storage Capacities in Deep Saline Aquifers of the Drava Basin, Pannonian Basin System. Energies 2025, 18, 3800. https://doi.org/10.3390/en18143800

AMA Style

Kolenković Močilac I, Cvetković M, Rukavina D, Kamenski A, Pejić M, Saftić B. Climbing the Pyramid: From Regional to Local Assessments of CO2 Storage Capacities in Deep Saline Aquifers of the Drava Basin, Pannonian Basin System. Energies. 2025; 18(14):3800. https://doi.org/10.3390/en18143800

Chicago/Turabian Style

Kolenković Močilac, Iva, Marko Cvetković, David Rukavina, Ana Kamenski, Marija Pejić, and Bruno Saftić. 2025. "Climbing the Pyramid: From Regional to Local Assessments of CO2 Storage Capacities in Deep Saline Aquifers of the Drava Basin, Pannonian Basin System" Energies 18, no. 14: 3800. https://doi.org/10.3390/en18143800

APA Style

Kolenković Močilac, I., Cvetković, M., Rukavina, D., Kamenski, A., Pejić, M., & Saftić, B. (2025). Climbing the Pyramid: From Regional to Local Assessments of CO2 Storage Capacities in Deep Saline Aquifers of the Drava Basin, Pannonian Basin System. Energies, 18(14), 3800. https://doi.org/10.3390/en18143800

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