Structure and petroleum systems of the Eastern Carpathians, Romania

Krézsek, Csaba; Schléder, Zsolt; Olaru-Florea, Radu F.; Tămaș, Alexandra; Oteleanu, A.; Stoicescu, A.; Ungureanu, C.; Dudus, Roxana; Tari, Gábor

doi:10.1016/j.marpetgeo.2023.106179

Cited by 5 publications

(3 citation statements)

References 38 publications

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“…Processes 2023, 11, x FOR PEER REVIEW 5 of 14 than 100 years ago, and over 70 gas fields stored in structural traps, frequently salt-cored folds, were discovered in the basin, and cumulative gas production exceeded 30 trillion cubic feet (TCF). The gas accumulations related to the middle Miocene to Pliocene formations (as reservoir rocks) and the deep marine middle Miocene shales (as source rocks) confirm the favorable conditions of the genesis, accumulation, and preservation of biogenic gas in the Transylvanian Basin [11,12]. Iernut power plant is located in the central part of the Transylvanian Basin.…”

Section: Geographical and Geological Settingsmentioning

confidence: 62%

“…In the basin center, there are crypto-diapirs and on the borders of the basin occurring salt-cored folds. During the Buglovian and Sarmatian time, the domes in the forming process have generally maintained a position higher than the surrounding areas and functioned as a controlling zone for hydrocarbons formed in the adjacent synclines [11,12].…”

Section: Geographical and Geological Settingsmentioning

confidence: 99%

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Using Numerical Reservoir Simulation to Assess CO2 Capture and Underground Storage, Case Study on a Romanian Power Plant and Its Surrounding Hydrocarbon Reservoirs

et al. 2023

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During current times, it is acknowledged that there is the often presence of extreme meteorological phenomena including floods and landslides, due to heavy rains, large wildfires, due to heat or droughts, permafrost melting, etc. At this stage, the world admits that anthropic activities have an important impact on these phenomena and considers that greenhouse gases are at the core of this climate change. The most common greenhouse gasses have general formulae COX and/or NOX, and they are released during different energy generating/conversion processes such as electric energy generation from fossil fuels or mechanical energy obtained from by-products of fossil fuels. Once acknowledged, the world’s countries have developed long-term strategies to eliminate gradually the release of these gases directly into Earth’s atmosphere. E.g., the EU aims to be climate-neutral by 2050; i.e., its economy will have net-zero greenhouse gas emissions. For this to happen, different effective methodologies have been drafted and implemented with underground gas storage in hydrocarbon depleted geological formations and/or saline aquifers being ones of significance when it comes to electric energy generation from fossil fuels in controlled spaces. The paper presents the simulation of capturing and injecting of these greenhouse gases through injection wells in neighboring depleted natural gas reservoirs using commercial numerical simulators for the Iernut natural gas (CH4) burning power plant which is one of Romania’s most important gas plants. Within this simulation study, the total CO2 quantity that can be stored via the proposed carbon capture and sequestration study and the proportion of each of the three CO2 storage mechanisms involved in the process (physical trapping, hydrodynamic trapping, and geochemical trapping) were determined and presented. Even though previous local studies investigated the potential of CO2 storage and sequestration into the Romanian underground reservoirs, none of it considered using the depleted hydrocarbon reservoirs surrounding the Iernut power plant for this process.

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Section: Geographical and Geological Settingsmentioning

confidence: 62%

Section: Geographical and Geological Settingsmentioning

confidence: 99%

Using Numerical Reservoir Simulation to Assess CO2 Capture and Underground Storage, Case Study on a Romanian Power Plant and Its Surrounding Hydrocarbon Reservoirs

et al. 2023

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“…This was the starting point of the exploration for the most important biogenic gas province (99% methane) from the Carpathian Basin, which still continues to produce gas. As a rough estimate: 30-35 TCF gas was produced from 90 fields in the last 100 years [18] . Being the focus of research efforts, the basin has undergone intensive exploration in the last few decades in order to understand the hydrocarbon system.…”

Section: Figure 1 Location Of the Transylvanian Basin -Romaniamentioning

confidence: 99%

Investigation of Miocene Methane Hydrate Generation Potential in the Transylvanian Basin, Romania

Unger¹,

LeClair²,

Györfi³

2022

adv. in geol. and geotech. eng. res.

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In geology we often revise theoretical models; upon finding new evidence,such as the discovery of methane hydrates, the initial model will be challenged immediately. Hereby the authors put forward two postulates:1) There is a third, previously unexplored source of methane in the Transylvanian Basin, based on a new theoretical approach on methane hydrate formation; 2) The dissociation of methane hydrates creates a strong chlorinity anomaly. Based on a recent analogy with the Black Sea basin model, we apply our statements to the Transylvanian Basin. Using direct and indirect indicators and the published system tract analysis, we claim that there are substantial grounds to believe that this model of methane hydrate formation applies to the Miocene Transylvanian Basin. Due to the increase of the geothermal gradient as a result of the volcanic activity from the Eastern Carpathians, the clathrates dissociated into methane and freshwater. This process of dilution resulted in a chlorinity anomaly that can be spotted in the formation waters of several gas fields from the Transylvanian Basin.

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The legacy of the Tethys Ocean: Anoxic seas, evaporitic basins, and megalakes in the Cenozoic of Central Europe

Palcu,

Mariș,

de Leeuw

et al. 2023

Earth-Science Reviews

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Structure and petroleum systems of the Eastern Carpathians, Romania

Cited by 5 publications

References 38 publications

Using Numerical Reservoir Simulation to Assess CO2 Capture and Underground Storage, Case Study on a Romanian Power Plant and Its Surrounding Hydrocarbon Reservoirs

Using Numerical Reservoir Simulation to Assess CO2 Capture and Underground Storage, Case Study on a Romanian Power Plant and Its Surrounding Hydrocarbon Reservoirs

Investigation of Miocene Methane Hydrate Generation Potential in the Transylvanian Basin, Romania

The legacy of the Tethys Ocean: Anoxic seas, evaporitic basins, and megalakes in the Cenozoic of Central Europe

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