吐鲁番拗陷深层构造演化特征与油气关系

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。

Relationship between deep tectonic evolution characteristics and hydrocarbon in Tulufan Depression

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 ...