阿姆河盆地东北部查尔朱基底断裂演化及其对盐下油气运聚的控制

发布时间：2018-01-06 04:11

本文关键词：阿姆河盆地东北部查尔朱基底断裂演化及其对盐下油气运聚的控制　出处：《高校地质学报》2017年02期 　论文类型：期刊论文

【摘要】：阿姆河盆地东北部油气资源丰富,基底断裂发育,在盐膏岩影响下断裂成因复杂。根据最新采集的地震资料、岩心和岩屑样品,通过地震构造解释、平衡剖面、储层流体包裹体均一温度测定等方法,研究了查尔朱基底断裂演化及其对盐下油气运聚的控制作用。结果表明,查尔朱断裂为基底同沉积断裂,控制二叠系—三叠系和侏罗系沉积,查尔朱基底断裂表现为西段走滑、中段正断裂、东段反转的特征,是在二叠系—三叠系伸展和新近系挤压两种近乎垂直的应力体制下形成的,同时受巨厚盐膏岩滑脱层的影响,伸展期正断裂在挤压构造运动中重新活化,走向与挤压应力方向一致的基底断裂走滑,走向与挤压应力方向垂直的基底断裂反转,断裂控藏作用表现在:早期正断裂控制了烃源岩发育,断裂晚期活化为油气垂向运移通道,形成了盐下"阶梯状"运移系统,晚期反转断裂为油气聚集提供了圈闭条件。
[Abstract]:The northeast part of Amu River basin is rich in oil and gas resources and the basement fault is developed. The fault genesis is complicated under the influence of salt gypsum rock. According to the newly collected seismic data, the core and debris samples are interpreted by seismic structure, and the balanced section is obtained. The evolution of the basement fault and its controlling effect on the migration and accumulation of oil and gas under salt are studied by measuring the homogenization temperature of reservoir fluid inclusions. The results show that the fault is a synsedimentary fault of the basement. Controlling the deposition of Permian-Triassic and Jurassic systems, the Charjuan basement fault is characterized by strike-slip in the western section, normal fault in the middle segment, and inversion in the eastern segment. It was formed in the perpendicular stress regime of Permian-Triassic extension and Neogene compression, and was reactivated during the extensional normal fault during the compression tectonic movement under the influence of the huge thick salt gypsum slippage. The strike-slip of the basement fault with the same strike direction as the extrusion stress direction and the reverse of the basement fault with the vertical direction of the extrusion stress direction show that the early normal fault controlled the development of the source rock. The late fault activation is the vertical migration channel of oil and gas, forming the "ladder" migration system under salt, and the late inversion fault provides the trap condition for oil and gas accumulation.
【作者单位】：辽宁工程技术大学;中国地质大学(北京)能源学院;中国石油勘探开发研究院;中国石油(土库曼斯坦)阿姆河天然气公司;
【基金】：国家科技重大专项(2011ZX-05059) 辽宁省教育厅基金(16-1120) 国家大学生创新创业计划项目(201610147038)联合资助
【分类号】：P618.13
【正文快照】： First author:NIE Minglong,Post Doctor;E-mail:nieminglong@sohu.com断层对油气运移聚集具有重要的控制作用,断层的活动和开启成为油气运移通道,控制油气运移方向,对油气藏起保存或破坏作用,与断层活动相伴生不同类型的圈闭,控制油气聚集。基底断裂是盆地深部活动较早的大型

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