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Influences of the Basin Brines on Hydrocarbons of the Anthracosia Shales from Southwestern Poland |
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| Authors: | SUN Yuzhuang Basin and Reservoir Research Centre University of Petroleum Shuiku Roa Changping Beijing and JIN Yujie China University of Mining and Technology Beijing |
| Abstract: | Previous studies have shown that the oxidizing brines from the Early Permian Rotliegende sequence have influences on the organic matter of Kupferschiefer. However, inside the Rotliegende sequence there are two other black shales: the Lower and Upper Antracosia shales, which have not been studied as much in detail as in Kupferschiefer. In the present study 12 samples from the Lower and Upper Antracosia shales were analyzed by organic geochemical methods in order to clarify the influences of the oxidizing brines on organic matter. The results indicate that the organic matter of the samples from the Upper Antracosia shale and the bottom of the Lower Antracosia shale was oxidized under the influences of the oxidizing brines. The oxidation resulted in a depletion of saturated hydrocarbons and the alky Is of the aromatic compounds. |
| Keywords: | Kupferschiefer basin brine organic matter saturated hydrocarbons |
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