摘要
塔里木盆地巴楚隆起低级别断裂研究较少,和田河东地区低级别断裂非常发育,具有研究代表性。文中通过三维地震资料的精细解析,基于构造地质学相关理论,对断裂特征、期次、演化等进行分析,进而探讨低级别断裂的油气地质意义。研究发现:研究区发育NNE、EW、NW转NNW、近NS向4组断裂体系,纵向上分为4个构造层,断裂主要集中于基底和下构造层。其主要经历了4期构造运动,加里东早期形成NW转NNW向弧形正断层;加里东中晚期是NNE向及近EW向走滑断裂带主要活动期;海西晚期断裂活动弱,仅褶曲变形;喜山期仅近SN向逆冲断裂活动。奥陶系潜在发育断溶体油气藏、寒武系潜在发育断背斜、断块油气藏。NNE向走滑断裂控制的奥陶系断溶体及寒武系断块油气藏类型值得探索。
Low-grade faults in the Bachu uplift of Tarim Basin are rarely studied, while low-grade faults in eastern Hetianhe area are well-developed, which are representative of the researches. Through the detailed analysis of 3D seismic data, this paper analyzes the fault characteristics, formation periods and evolution based on structural geology, and then discusses the petroleum geological significance of low-level faults. The results show that there are four groups of fault systems in this area: NNE, EW, NW to NNW and nearly NNS. It is divided into four structural layers vertically, and faults are mainly focused on the basal and lower structural layer. It mainly experienced four periods of tectonic movement: NW to NNW trending arc-shaped normal faults formed in the early Caledonian;the main active periods of NNE trending and nearly EW trending strike-slip fault zones were in the middle and late Caledonian;in the late Hercynian period, the fault activity was weak and only convoluted;during the Himalayan epoch, only the thrust faults near SN were active. There are potential fault solution reservoirs in Ordovician and potential fault anticline and fault block reservoirs in Cambrian. The types of Ordovician fault solution and Cambrian fault block oil and gas reservoirs controlled by NNE strike-slip faults are worth exploring.
作者
马海陇
王震
邓光校
文欢
张长建
丁立明
蒋海军
MA Hailong;WANG Zhen;DENG Guangxiao;WEN Huan;ZHANG Changjian;DING Liming;JIANG Haijun(Exploration and Development Research Institute,Northwest Oilfield Company,SINOPEC,Urumqi 830001,China)
出处
《断块油气田》
CAS
CSCD
北大核心
2021年第3期329-334,共6页
Fault-Block Oil & Gas Field
基金
中石化重大科技专项课题“深层断溶体油藏描述及开发技术研究”(P18042)。
关键词
走滑断裂
形成演化
油气地质意义
和田河东地区
塔里木盆地
strike-slip fault
formation and evolution
petroleum geological significance
eastern Hetianhe area
Tarim Basin
