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Effects of thermal maturation and thermochemical sulfate reduction on compound-specific sulfur isotopic compositions of organosulfur compounds in Phosphoria oils from the Bighorn Basin, USA

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Ellis, G.S., Said-Ahmad, W., Lillis, P.G., Shawar, L., Amrani, A., 2016, Effects of thermal maturation and thermochemical sulfate reduction on compound-specific sulfur isotopic compositions of organosulfur compounds in Phosphoria oils from the Bighorn Basin, USA: Organic Geochemistry, Volume 103, January 2017, Pages 63-78. Available at: http://dx.doi.org/10.1016/j.orggeochem.2016.10.004

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Compound-specific sulfur isotope analysis was applied to a suite of 18 crude oils generated from the Permian Phosphoria Formation in the Bighorn Basin, western USA. These oils were generated at various levels of thermal maturity and some experienced thermochemical sulfate reduction (TSR). This is the first study to examine the effects of thermal maturation on stable sulfur isotopic compositions of individual organosulfur compounds (OSCs) in crude oil. A general trend of 34S enrichment in all of the studied compounds with increasing thermal maturity was observed, with the δ34S values of alkyl-benzothiophenes (BTs) tending to be enriched in 34S relative to those of the alkyl-dibenzothiophenes (DBTs) in lower-maturity oils. As thermal [...]

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Type Scheme Key
local-index unknown 70179155
local-pk unknown 70179155
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1016/j.orggeochem.2016.10.004
series unknown Organic Geochemistry

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journalOrganic Geochemistry
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typevolume
value103
languageEnglish
citationTypeArticle

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