柴达木盆地油气成藏构造演化作用浅析

构造演化在油气成藏过程中起着重要作用，控制了油气聚集和分布格局。从柴达木盆地构造特征入手，深入分析了盆地断裂系统发育特征，指出构造对油气藏的控制作用主要表现在：（1）深大断裂控制了含油气系统的分布；（2）喜马拉雅运动中-晚期构造活动控制了构造圈闭带的形成和演化；（3）断裂系统还控制着输导系统的分布，喜马拉雅运动中-晚期断层控制了油气运移；（4）喜马拉雅晚期断层活动具有破坏性；（5）构造带控制了油气聚集带的分布；（6）在柴达木盆地，油气主要富集在喜马拉雅运动中期以前形成的古隆起构造带上。因此，柴达木盆地油气藏的形成和分布受到构造活动的显著控制。

TECTONIC EVOLUTION AND FORMATION OF RESERVOIRS IN QAIDAM BASIN

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.