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现代地质 ›› 2023, Vol. 37 ›› Issue (05): 1123-1135.DOI: 10.19657/j.geoscience.1000-8527.2023.058

• 构造地质学 • 上一篇    下一篇

塔里木盆地走滑断裂发育演化特征精细解析及其地质意义:以富满油田F17断裂为例

刘强1(), 张银涛1, 陈石2,3(), 宋兴国2,3, 李婷1, 康鹏飞1, 马小平1   

  1. 1.中国石油塔里木油田公司,新疆 库尔勒 841000
    2.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
    3.中国石油大学(北京) 地球科学学院,北京 102249
  • 收稿日期:2022-11-15 修回日期:2023-05-25 出版日期:2023-10-10 发布日期:2023-11-14
  • 通讯作者: 陈 石,男,博士,副教授,1986年出生,石油地质学专业,主要从事含油气盆地构造分析研究。Email:chenshi4714@163.com
  • 作者简介:刘 强,男,博士,教授级高级工程师,1970年出生,石油地质学专业,主要从事油气盆地构造分析研究。Email: Liuq006@sina.com
  • 基金资助:
    塔里木油田科技项目“富满油田勘探开发一体化关键技术攻关研究”(T202112)

Development and Evolution Characteristics of Strike-slip Faults in Tarim Basin and Its Geological Significance: A Case Study of F17 Fault in Fuman Oilfield

LIU Qiang1(), ZHANG Yintao1, CHEN Shi2,3(), SONG Xingguo2,3, Li Ting1, KANG Pengfei1, MA Xiaoping1   

  1. 1. PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000, China
    2. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China
    3. Basin and Reservoir Research Center, China University of Petroleum (Beijing), Beijing 102249, China
  • Received:2022-11-15 Revised:2023-05-25 Online:2023-10-10 Published:2023-11-14

摘要:

塔里木盆地台盆区走滑断裂具有“控储、控藏、控富”的特点,但因其发育于超深层且活动强度较弱,断裂的精细解析及演化特征分析是目前研究的重点和难点。为深化走滑断裂构造精细解析流程及探讨断裂活动的地质意义,以富满油田F17断裂为例,基于新采集的高精度三维地震资料,结合相干、最大似然及储层振幅变化率等多种地震属性,分析断裂的空间展布规律、活动特征、演化过程,并结合储层发育特征初步分析断裂控储特征。通过恢复研究区前寒武纪基底结构特征,对断裂平面走向偏移的发育机制进行初步分析。研究结果表明,研究区内F17断裂平面发生多次转向,走向由南往北发生逆时针偏转;基于断裂的走向变化特征,可将断裂划分为北(NE8°)、中(NE33°)、南(NE50°)三段。断裂具有垂向分层变形的特征,依据断裂变形特征,可划分为以直立走滑为特征的深部构造变形层(TO3t之下)和发育雁列式正断层的浅部构造变形层(TO3t之上)。断裂在深部构造变形层中具有“分层开花”的特征,垂向上发育多个花状构造,主要分布于上寒武统底面(T∈3)及一间房组顶面(TO3t)附近。浅部构造层垂向发育三组雁列式正断层,由下往上分布于TO3t—TS、TS—TC以及TC—TT。断裂的演化具有多期性,演化过程可划分为5个阶段:加里东早期、加里东中期Ⅰ幕、加里东中期Ⅲ幕、加里东晚期—海西早期、海西中—晚期。前寒武纪基底裂谷结构影响了上覆走滑断裂的发育与连接,造成断裂平面走向发生偏移。

关键词: 塔里木盆地, 富满油田, F17断裂, 多期演化, 走向偏转

Abstract:

The strike-slip fault in the platform Tarim basin has the characteristics of “controlling reservoir, controlling reservoir and controlling wealth”, but because it is developed in ultra-deep layer and its activity intensity is low, the fine analysis and evolution characteristic analysis of the fault is the focus and challenge of the current research.To deepen the fine analysis process of strike-slip fault structure and explore the geological significance of fault activity, we took F17 fault as a case study.Based on the new high-precision 3D seismic data in the Fuman oilfield, combined with a variety of seismic attributes such as coherence, maximum likelihood and reservoir amplitude change rate, we analyzed the spatial distribution regularity, activity characteristics and evolution process of faults, and the characteristics of fault control and storage in combination with the reservoir development characteristics.Based on the reconstruction of the local structural characteristics of the Precambrian basement, the development mechanism of fault plane strike migration is preliminarily analyzed.The results show that the local F17 fault plane has changed many times and its strike shifted counterclockwise from south to north.Based on the changing characteristics of the fault strike, the fault can be divided into three segments: North (NE8°), middle (NE33°) and south (NE50°).The fault has the characteristics of vertical delamination defor-mation.According to the fault deformation characteristics, it can be divided into the deep structural deformation layer characterized by vertical strike-slip (below TO3t), and the shallow structural deformation layer with echelon normal fault (above TO3t).The fault has the characteristic of “stratified flowering” in the deep structural deformation layer, and several flower-like structures are developed vertically, which are mainly distributed near the bottom of the Upper Cambrian (T∈3) and the top of the Yijianfang Formation (TO3t).Three groups of echelon normal faults are developed vertically in the shallow structural layer, which are distributed in TO3t-TS, TS-TC and TC-TT from bottom to top.The fault evolution is likely multi-stage, and the evolution can be divided into five stages: early Caledonian, middle Caledonian Ⅰ, middle Caledonian Ⅲ, late Caledonian-early Hercynian, and middle-late Hercynian.The Precambrian basement rift structure likely affected the development and connection of the overlying strike-slip faults, resulting in the fault plane offset.

Key words: Tarim Basin, Fuman Oilfield, F17 fault, multi-stage evolution, strike deflection

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