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AAPG Bulletin
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AAPG Bulletin; Year: 2016; Issue: May DOI: 10.1306/12111514206
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Figure 3. Calculated temporal and spatial evolution of hydrogen sulfide (H2S) concentration in the gas cap and reservoir souring intensity by H2S (summed concentration of gaseous H2S (H2S(g)), aqueous H2S (H2S(aq)), aqueous bisulfide (HS−(aq)), aqueous sulfide ion (S2−(aq)), aqueous ferrous iron di-hydrogen sulfide complex (Fe(HS)2(aq)), aqueous ferrous iron tri-hydrogen sulfide complex (Fe(HS)3−(aq)), and aqueous disulfide ion (S22−(aq)) to aqueous hexa-polysulfide ion (S62−(aq)) for scenario 1–reference.
Figure 3. Calculated temporal and spatial evolution of hydrogen sulfide (H2S) concentration in the gas cap and reservoir souring intensity by H2S (summed concentration of gaseous H2S (H2S(g)), aqueous H2S (H2S(aq)), aqueous bisulfide (HS−(aq)), aqueous sulfide ion (S2−(aq)), aqueous ferrous iron di-hydrogen sulfide complex (Fe(HS)2(aq)), aqueous ferrous iron tri-hydrogen sulfide complex (Fe(HS)3−(aq)), and aqueous disulfide ion (S22−(aq)) to aqueous hexa-polysulfide ion (S62−(aq)) for scenario 1–reference.