Based on the evolutionary process simulation of burial history and geothermal history,the paper studies oil and gas pool formation in Chang 9 Formation in Ordos Basin with microfluorometric technology and microscopic thermometry technology of inclusions.The result shows that the oil-gas accumulation in the formation is characterized with one stage infilling except Feng 2 well with feeblish late-stage infilling.It is suggested that tectonic heat event should have occurred in 130-100 Ma of early-Cretaceous an...
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