Origin of dawsonite-forming fluids in the Mihályi-Répcelak field (Pannonian Basin) using stable H, C and O isotope compositions: Implication for mineral storage of carbon-dioxide

Cseresznyés, Dóra; Czuppon, György; Király, Csilla; Demény, Attila; Gyӧre, Domokos; Forray, Viktória; Kovács, Ivett; Szabó, Csaba; Falus, György

doi:10.1016/j.chemgeo.2021.120536

Cited by 5 publications

(5 citation statements)

References 68 publications

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“…New Ne isotope measurements of gases sampled in 2017 and 2019 suggest the age of CO 2 to be 8 ± 3 Ma from the Répcelak field, confirming previous studies [4]. In contrast, Ne isotopes in CO 2 from the Mihályi field are consistent with recent derivation from magmas derived from sub-continental lithosphere.…”

supporting

confidence: 85%

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A nascent natural CO₂ reservoir: the Mihályi field, Pannonian Basin; Opportunities for geologic carbon storage

Cseresznyés¹,

Szabó²,

Gyӧre³

et al. 2022

Goldschmidt2022 Abstracts

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supporting

confidence: 85%

“…The Répcelak reservoir is slightly shallower and locates 20 km to the southwest. Stable and noble gas isotope studies suggested the origin of the CO 2 to be late Miocene magmatic degassing for both fields [3][4].…”

mentioning

confidence: 99%

A nascent natural CO₂ reservoir: the Mihályi field, Pannonian Basin; Opportunities for geologic carbon storage

Cseresznyés¹,

Szabó²,

Gyӧre³

et al. 2022

Goldschmidt2022 Abstracts

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“…Lima and De Ros [16] attributed the dawsonite presence in the Pre-salt to hydrothermal activity due to its association with saddle dolomite and Sr-barite cements. The source of CO 2 for dawsonite precipitation has been shown to be magmatic in several other studies (e.g., [157,158,160]). Our data seem to agree with a late-stage, hydrothermal origin for dawsonite, associated with saddle dolomite cementation.…”

Section: Mesodiagenetic/hydrothermal Interactionsmentioning

confidence: 79%

“…Dawsonite is related to alkaline fluids with high Al 3+ , Na + , and HCO 3 − and high CO 2 pressures [157]. The most common origin for this mineral is the alteration in albite in sandstones under high pCO 2 (e.g., [158] and references therein), though they have also been related to the hydrothermal activity associated with intrusive or volcanic rocks [159,160] and under shallow conditions through the reaction of Na + -HCO 3 rich brines and bacterial CO 2 (e.g., [161]). Lima and De Ros [16] attributed the dawsonite presence in the Pre-salt to hydrothermal activity due to its association with saddle dolomite and Sr-barite cements.…”

Section: Mesodiagenetic/hydrothermal Interactionsmentioning

confidence: 99%

Interactions between Clays and Carbonates in the Aptian Pre-Salt Reservoirs of Santos Basin, Eastern Brazilian Margin

Schrank,

Dos Santos,

Altenhofen

et al. 2024

Minerals

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The giant Pre-salt reservoirs represent most of the oil production in Brazil. The main Aptian sag reservoirs were deposited in a unique and highly complex hyper-alkaline lacustrine setting. These deposits are essentially constituted by fascicular and spherulitic calcite precipitated in a magnesian clay matrix (stevensite, kerolite, and saponite/hectorite). Although vital for understanding the origin and main reservoir quality control, the genesis and interactions of clays and carbonates are still poorly constrained. The detailed petrographic description was focused on 812 thin sections from five wells drilled in the Santos Basin Aptian Barra Velha Formation, combined with cathodoluminescence, UV epifluorescence, and X-ray diffraction analyses. The main syngenetic processes were the deposition of finely laminated peloidal and ooidal Mg-clays, the formation of fascicular calcite crusts on the sediment–water interface, and the redeposition of these materials as intraclasts. Abundant clay peloids engulfed in syngenetic shrubs indicate that calcite and clay precipitation was concomitant, though with highly variable rates. Eodiagenetic phases include matrix-replacive and -displacive spherulites and fascicular shrubs; matrix-replacive blocky calcite and dolomite; lamellar carbonates filling matrix shrinkage pores; and microcrystalline calcite, dolomite, and silica replacing the Mg-clay matrix. The preferential dolomitization and calcitization of peloidal layers were most likely due to their higher permeability and larger specific surface. Matrix-replacive saddle dolomite, macrocrystalline calcite, and dawsonite are interpreted as mesodiagenetic or hydrothermal phases after significant matrix dissolution. Unraveling the processes of the formation and alteration of the carbonates and clays and their interactions in the Pre-salt deposits is essential for constraining the depositional and diagenetic conditions in their unique environments and their diagenetic overprinting and for decreasing the exploration risks and increasing the production of those extraordinary reservoirs.

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“…A Kisalföldön, Mihályi és Répcelak környékén ugyanebbe a formációba sorolható kőzetben a plagioklászok szinte hiányoznak, és jóval több Fe-gazdag karbonát (pl. sziderit, FeCO 3 ) található a kőzetben (Király et al 2017;Cseresznyés et al 2021). Szolnok környéki (Zagyvarékas) fúrásban a plagioklász és klorit mennyisége kisebb a jelen tanulmányban vizsgált, azonos mélységből származó mintához képest (Sendula-Forray 2014).…”

Section: Analitikai Vizsgálatok Eredményeiunclassified

A felszín alatti hidrogéntárolás kőzetalkotó ásványokra gyakorolt hatása a Pannon-medencében

Gelencsér,

Tóth,

Németh

et al. 2024

ScientSec

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Összefoglalás. Az energiaigény és a megújuló energiaforrásokból származó kínálat között fennálló szezonális eltérés áthidalható a hidrogéngáz bevezetésével az energiaellátásba. A nagy léptékű energiatárolás hidrogén formájában a felszín alatti térben lehetséges. Azonban a kőzet pórusterében az injektált hidrogén hatására végbemenő reakciók nemcsak a kitermelendő hidrogén mennyiségét és minőségét csökkentik, de a kőzet hosszabb távú állékonyságát is ronthatják. A Kárpát-Pannon régióban jelentős mennyiségben találhatók porózus kőzetek, amelyek hidrogéntárolásra is alkalmasak lehetnek. Ugyanakkor, ezek a kőzetek változatos ásványos összetételük miatt reakcióba léphetnek a hidrogénnel. Vizsgálatunk célja, hogy megismerjük a kőzetalkotó ásványok viselkedését pórusvíz és hidrogén jelenlétében, amely elengedhetetlen a rezervoár tárolási potenciáljának felméréséhez. Summary. One of the key substances in the modern-day energy transition is hydrogen, which can be utilized as an energy storage chemical substance. To store hydrogen on the scales required for global hydrogen economy, porous geological formations should be considered. However, geochemical challenges associated with hydrogen storage in sedimentary formations are still not well understood. Mineral dissolution and precipitation, as a result of hydrogen injection into the rocks not only can decrease the quality and the quantity of the stored hydrogen but may have an impact on the rock integrity as well. The Carpathian Pannonian region is rich in porous rocks, which could serve as hydrogen storage sites. However, many of them show various mineralogical compositions, which could behave differently under high hydrogen partial pressure. The main objective of our study is to predict geochemical reactions among rock-forming minerals, pore water and hydrogen. For this purpose, we apply analytical techniques and geochemical modeling. The subject of this research is the Late Miocene Szolnok Sandstone Formation located in the Pannonian Basin, Carpathian-Pannonian Region. In the future this Formation can play a significant role in hydrogen storage, due to its favorable reservoir geological and petrophysical characteristics. X-ray diffraction analyses were carried out, polished and thin sections were prepared for petrographic and geochemical analyses. The collected data were used in the PHREEQC modeling environment. In the first stage, equilibrium batch models were made to assess the potential long-term impacts of hydrogen on the reservoir rock and the effect of the geological environment. The modeling results of the project showed that hydrogen almost does not react with silicates (e.g., quartz). Possible hydrogen loss can occur due to redox reactions. Pyrite (FeS2) can react with hydrogen producing hydrogen sulfide (H2S) and since petrography has revealed that the studied sandstones have pyrite as accessory mineral.

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Origin of dawsonite-forming fluids in the Mihályi-Répcelak field (Pannonian Basin) using stable H, C and O isotope compositions: Implication for mineral storage of carbon-dioxide

Cited by 5 publications

References 68 publications

A nascent natural CO₂ reservoir: the Mihályi field, Pannonian Basin; Opportunities for geologic carbon storage

A nascent natural CO₂ reservoir: the Mihályi field, Pannonian Basin; Opportunities for geologic carbon storage

Interactions between Clays and Carbonates in the Aptian Pre-Salt Reservoirs of Santos Basin, Eastern Brazilian Margin

A felszín alatti hidrogéntárolás kőzetalkotó ásványokra gyakorolt hatása a Pannon-medencében

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Origin of dawsonite-forming fluids in the Mihályi-Répcelak field (Pannonian Basin) using stable H, C and O isotope compositions: Implication for mineral storage of carbon-dioxide

Cited by 5 publications

References 68 publications

A nascent natural CO2 reservoir: the Mihályi field, Pannonian Basin; Opportunities for geologic carbon storage

A nascent natural CO2 reservoir: the Mihályi field, Pannonian Basin; Opportunities for geologic carbon storage

Interactions between Clays and Carbonates in the Aptian Pre-Salt Reservoirs of Santos Basin, Eastern Brazilian Margin

A felszín alatti hidrogéntárolás kőzetalkotó ásványokra gyakorolt hatása a Pannon-medencében

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A nascent natural CO₂ reservoir: the Mihályi field, Pannonian Basin; Opportunities for geologic carbon storage

A nascent natural CO₂ reservoir: the Mihályi field, Pannonian Basin; Opportunities for geologic carbon storage