【摘要】 综合吐鲁番拗陷深层地震、钻井和露头等资料,本文建立复杂构造带区域地质大剖面,并利用平衡剖面技术进行构造恢复。主要目的是动态地再现构造的形成过程,精确地判断出古今圈闭的时空展布,合理地解释油气的运聚成藏及散失与构造演化的关系。分析认为,海西期—印支早期为拗隆雏形形成期,变形强度南强北弱;印支晚期—燕山期为构造持续隆升发展变形期,具有由南到北变形渐晚、变形强度减弱的整体特征;喜马拉雅期为深层古构造调整改造定型期,调整改造强度具有北强南弱,以及中段强、东西两段弱的特征。构造运动与圈闭形成的突出特征是印支末期以隆升剥蚀作用为主,中晚燕山期以继承性褶皱加强作用为主,喜马拉雅期以逆冲褶皱改造作用为主。圈闭形成与油气运移的配置有四种关系:海西期—印支早期形成的圈闭早于油气的生排烃期,印支末期—中燕山期形成的圈闭大致与油气生排烃同期,晚燕山期—早喜马拉雅期形成的圈闭稍晚于生排烃期,晚喜马拉雅期形成的圈闭大大晚于生排烃期。更多还原

【Abstract】 Based on study on the seismic data from deep strata,drilling data and outcrops etc.in Turpan Depression,the paper established the regional geological section for the complicated structure belt and carried out the structural recovery by using the balanced section technique.The main purpose of which is to reconstruct the forming process of the structure dynamically,judge the distribution of traps accurately and explain the relationship between the migration,accumulation and destruction of the hydrocarbon and the structure evolution reasonably.It is understood that the Hercynian to early Indosinian period is the embryonic stage for the depression formation,the deformation intensity decreasing from the South to North.The late Indosinian to Yanshanian period is the stage of uplift development deformation with the feature of structure’s distortion earlier in the south than in the north and the distortion intensity decreased from the south to the north.The Himalayan period is adjusting and modifying stage for the deep paleo tectonic,featured the intensity of the adjusting and modifying decreasing from north to south in NS direction and stronger in the middle and weaker in the east section and west section in the EW direction.The tectonic movement and trap formation is characterized by mainly the uplift and erosion in Late Indosinian period,the successive fold strengthening in Mid-late Yanshanian period,and the thrust fold modifying in Himalayan period.The relationships between the formation of trap and the migration of hydrocarbon are as follows:(1) the traps formed in Hercynian to early Indosinian period were earlier than the main stage of the hydrocarbon’s generation and expulsion,(2) the traps formed in late Indosinian to middle Yanshanian Movement stage were almost at same time with the main stage of hydrocarbon’s generation and expulsion,(3) the traps formed in late Yanshanian movement to early Himalayan movement stage were litter bit late than the main stage of hydrocarbon’s generation and expulsion and(4) the traps formed in Late Himalayan period were much later than the main stages of hydrocarbon generation and expulsion.更多还原