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1 Introduction Petroleum accumulations from the Earth’s crust can be grouped into conventional and unconventional ones.The history of the world’s petroleum exploration is a history from the exploration of conventional accumulations to that of unconventional ones.Nevertheless,petroleum accumulation is actually a contrary process starting from
1 Introduction Petroleum accumulations from the Earth’s crust can be grouped into conventional and unconventional ones. The history of the world’s petroleum exploration is a history from the exploration of conventional accumulations to that of unconventional ones. However, petroleum accumulation is actually a contrary process starting from