Abstract:

Tectonic evolution plays an important role in the formation，accumulation and distribution of petroleum pools.In view of the tectonic characteristic of the Qaidam Basin，the characteristic of the fault system is analyzed in detail，and then the control of tectonic on the pools are pointed out as following，1，discordogenic faults control the distribution of the petroliferous system，2，tectonic movement during the middle and late period of the Himalayan movement controlled the formation and evolvement of the structural trap，3，the fault system controls the distribution of the transforming system and migration，4，the fault activities during the late period of Himalayan movement were destructive，5，structural belts control distribution of the hydrocarbon accumulation belts and 6，the oil and gas enriched in the structural belts with palaeohighs which formed before the middle period of Himalayan movement in Qaidam Basin.So，the formation and distribution of petroleum pools are controlled by the tectonic activities.

Key words: Qaidam Basin, fault system, transforming system, tectonic movement, law of hydrocarbon distribution