Title: Hydrocarbon Accumulation Conditions and Advantageous Exploration Targets in Foreland Basins of Central-Western China
Abstract: The foreland basins in central and western regions of China are rich in oil and gas resources, but the discovery rate of resources is only about 9.3%, so it is necessary to carry out systematic analysis of the hydrocarbon accumulation conditions for guiding the oil-gas exploration in the regions. On the basis of comprehensive analyses on hydrocarbon accumulation conditions in the four representative foreland basins, Kuqa basin, southern Junggar basin, western Sichuan basin and northern margin of Qaidam basin, some conclusions are made as follows: The foreland basins in central and western regions of China are characterized by multi-set source rocks dominated by coal measure; heterogeneous reservoirs; multiple and sealing cap rock; anticline traps; unblocked transport system composed of fault, unconformity and highly permeable sand body; and poor conservative conditions, etc. According to these results combined with exploration practice, four favorable exploration zones are selected, these are the integrated anticline traps below the Tertiary gypsum halite, gypsum mudstone in Kuqa foreland thrust belts, the second and the third row structural belts in southern Junggar foreland thrust belt, the unconventional natural gas pools in the Yanshan palaeohigh in north and south of western Sichuan basin, the gentle fold structural belt in central Sichuan basin and the deep depression in Sichuan basin, and the cold lake and Nanbaxian structural belt in northern margin of Qaidam basin.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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Cited By Count: 1
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