塔里木盆地塔中—巴楚地区反转构造及其石油地质意义  

Inversion Structures in Tazhong-Bachu Area and Their Significance to Petroleum Geology

作　　者：杨勇[1,2] 汤良杰[1,2] 漆立新[3] 邱海峻[4] 姚文倩[1,2] 

机构地区：[1]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [2]中国石油大学(北京)盆地与油藏研究中心,北京102249 [3]中国石化西北油田分公司,新疆乌鲁木齐830011 [4]国土资源部油气资源战略研究中心,北京100034

出　　处：《现代地质》2014年第3期559-565,共7页Geoscience

基　　金：国家自然科学基金项目(41172125;40972090);国家"973"项目(2005CB422107;2012CB214804);全国油气资源战略选区调查与评价国家专项(2009GYXQ02-05);教育部博士点基金项目(200804250001);国家科技重大专项(2011ZX05002-003-001HZ)

摘　　要：根据地震剖面解释成果,对塔中—巴楚地区反转构造变形特征和发育期次进行了探讨和研究,并分析了反转构造的石油地质意义。基底正断层形成以后在加里东早期、加里东中期、海西晚期—燕山晚期发生了构造反转。受基底正断层的影响,研究区发育继承反转型、截断取直型和反向截断型3种类型的反转构造:当基底正断层倾角较小时,构造反转沿先存正断层发生,形成继承反转型反转构造;当基底正断层倾角较大不利于反转时,正断层为后期的逆冲断层提供应力集中点,形成截断取直型反转构造;基底正断层也可能被后期倾向相反的逆断层所错断,形成反向截断型反转构造。研究区内3期构造反转形成的圈闭与寒武系烃源岩生排烃期具有良好的时空配置关系,有利于油气聚集成藏。On the basis of the seismic interpretation, the deformation features and evolution periods of inversion structures and their significance on hydrocarbon in the Tazhong-Bachu aera are studied in this paper. The basement normal faults were inversted in the Early and Middle Caledonian and Later Hercynian to Later Yanshanian, respectively. Controlled by the basement normal faults, three styles of inversion structures were developed in Tazhong-Bachu area： （1） Inheritance inversion type. When the dip of the basement normal faults was small, inheritance inversion structures formed by the later inversion acted along the pre-existing normal faults; （2） Short cut type. When the dip of basement normal fault was big, the normal fault might not be favorable for its further inversion and forced the inversion to form in the adjacent faults, and the basement normal faults provided stress concentrations point for the thrust faults, and （3） Reverse cut type. The inversion structures formed by the later thrust faults cut the basement normal faults which have the opposite tendency. The periods of traps formation resulted from structural inversion were greatly match to the peak stages of hydrocarbon generation and expulsion, so inversion structures in the studied area are favorable to hydrocarbon accumulation.

关 键 词：塔里木盆地 塔中隆起 巴楚隆起 反转构造 演化模型 石油地质意义 

分 类 号：TE121.2[石油与天然气工程—油气勘探]