Title: Differences in hydrocarbon distribution of two passive continental margins of Australia:North West Shelf and Southern margin
Abstract:The Australian North West Shelf(NWS) and Southern passive continental margin are both main hydrocarbon accumulation areas in Australia.Similarities and differences exist in tectonic evolution history,...The Australian North West Shelf(NWS) and Southern passive continental margin are both main hydrocarbon accumulation areas in Australia.Similarities and differences exist in tectonic evolution history,fracture system,development time,hydrocarbon distribution,etc.Study on the differences from three respects: tectonic evolution controlling basin framework,source-controlling regional structure and trap-controlling fault.The results show that:(1) The NWS develops multi-period rifting,completed structures,and there appears oil lies upon gas vertical layered structure.The intensity of tectonic activity and differences of development period causes hydrocarbon distribution heterogeneity.The Southern margin develops rifting late and short duration.Basins in this area are all produce oil only.(2) Regional structure controls distribution of hydrocarbon generation center.The NWS develops source rock in all Mesozoic.The Southern margin develops in late Cretaceous and Cenozoic.(3) Differences of fracture system cause the differences of trap types.In the NWS,early-trap is destroyed by late faults,developed fault block traps.The Southern margin develops anticline traps and tilted fault block traps.The developed features of the two passive continental margins are similar to the South China Sea passive continental margin.The hydrocarbon distributions of the two areas have the guiding significance for the South China Sea passive continental margin.Read More
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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