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Basin Types and Distribution of the Global Giant Oil and Gas Fields

JIA Dong,WU Long,YAN Bin,LI Hai-bin,LI Yi-quan,WANG Mao-mao Institute of Energy Sciences,School of Earth Sciences and Engineering,Nanjing University,Nanjing 210093,China  
After summarizing previous research material of global giant oil and gas fields,the USGS data,and typical proto-type basinal classification schemes,we classify the world's 877 giant oil and gas fields and 153 main basins in which they are located.In this paper,we present four maps and eight statistical histograms showing distributions of giant oil and gas fields and basins based on different basinal classification schemes.Basin types and distribution of global giant oil and gas fields are identified,and then the effects of different proto-type basin categories on the distribution of giant oil and gas fields are discussed.At the same time,considering the complex tectonic evolution of basins as well as their association with hydrocarbon accumulation,we attempt to classify superimposed basins according to their tectonic transformation or inheritance characteristics.Our results indicate that basins with positive inversion features are optimum for the formation of giant oil and gas fields;successor rift basins and successor foreland basins are less prominent,leaving negative inversion basin type to the least option.
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