A geochemical reconstruction of oil generation in the Barrow Sub-basin of Western Australia |
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| Authors: | John K Volkman Robert Alexander Robert Ian Kagi Rohinton A Noble Carry Wayne Woodhouse |
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| Institution: | Petroleum Geochemistry Group, School of Applied Chemistry, Western Australian Institute of Technology, South Bentley, Western Australia, 6102, Australia |
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| Abstract: | A suite of crude oils and petroleum source rock extracts from the Barrow Sub-basin of Western Australia have been analysed for biological marker compounds by capillary GC-MS, and for volatile hydrocarbons by whole oil capillary GC. These analyses were used to calculate values for twenty-three biomarker parameters in order to assess aspects of source type, maturity, migration and biodegradation of the hydrocarbons.The crude oils had a source in the Upper Jurassic Dingo Claystone formation. These hydrocarbons accumulated in the reservoir sands and in some cases were biodegraded. Several accumulation and biodegradation episodes have been recognised while the basin continued to subside, which resulted in a suite of oils showing marked differences in composition. |
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| Keywords: | Author to whom correspondence should be addressed |
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