Fluid inclusion evidence for low-temperature thermochemical sulfate reduction (TSR) of dry coal gas in Upper Permian carbonate reservoirs (Zechstein, Ca2) in the North German Basin

Fluid inclusion evidence for low-temperature thermochemical sulfate reduction (TSR) of dry coal gas in Upper Permian carbonate reservoirs (Zechstein, Ca2) in the North German Basin

Upper Permian Zechstein carbonate Ca2 gas reservoirs in the southern part of the Pompeckj Block in the North German Basin locally contain up to 36 vol% hydrogen sulfide (H2S) produced by thermochemical sulfate reduction (TSR). TSR was triggered by migration of dry to extremely dry coal gas from Uppe...

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Veröffentlicht in:Chemical geology 2020-02, Vol.534, p.119453, Article 119453
Hauptverfasser: Sośnicka, Marta, Lüders, Volker
Format: Artikel
Sprache:eng
Schlagworte:
Fluid inclusions
Hydrocarbons
Hydrogen sulfide
Methane
Stable isotopes
TSR
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Zusammenfassung:Upper Permian Zechstein carbonate Ca2 gas reservoirs in the southern part of the Pompeckj Block in the North German Basin locally contain up to 36 vol% hydrogen sulfide (H2S) produced by thermochemical sulfate reduction (TSR). TSR was triggered by migration of dry to extremely dry coal gas from Upper Carboniferous into the Zechstein carbonate reservoirs. Methane reacted with dissolved sulfate at temperatures of
ISSN:0009-2541
1872-6836
DOI:10.1016/j.chemgeo.2019.119453