西湖凹陷断裂体系发育特征及其控盆效应

doi:10.3799/dqkx.2026.105

西湖凹陷断裂体系发育特征及其控盆效应

doi: 10.3799/dqkx.2026.105

1. 中海石油(中国)有限公司上海分公司, 上海, 200335;
2. 中国石油大学(华东)地球科学与技术学院, 山东青岛, 266580;
3. 山东科技大学地球科学与工程学院, 山东青岛, 266590

基金项目:

新型油气勘探开发国家科技重大专项“海上盆地深大断裂演化及其对深层/超深层油气富集的控制作用”课题（2025ZD1402802）、中海油（中国）有限公司重大三外项目“西湖凹陷断裂体系控藏研究”（编号:CCL2023SHPS002EM）的联合资助。

详细信息

作者简介:
蒋一鸣(1983-)，男，高级工程师，主要从事海洋油气勘探开发研究。E-mail： jiangym2@cnooc.com.cn

通讯作者:
郑津杭(2001-)，男，博士研究生，主要从事盆地构造变形特征解析研究。E-mail： 1801040409@s.upc.edu.cn吴智平(1967-)，男，教授，博士生导师，主要从事含油气盆地构造及其控藏作用研究。E-mail：wuzp@upc.edu.cn

郑津杭(2001-)，男，博士研究生，主要从事盆地构造变形特征解析研究。E-mail： 1801040409@s.upc.edu.cn吴智平(1967-)，男，教授，博士生导师，主要从事含油气盆地构造及其控藏作用研究。E-mail：wuzp@upc.edu.cn

中图分类号: P618.13
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出版历程
- 收稿日期: 2025-11-28
- 网络出版日期: 2026-05-13

Developmental Characteristics of the Fault System and Its Basin-Controlling Effects in the Xihu Sag

1. Shanghai branch of CNOOC Ltd, Shanghai, 200335, China;
2. School of Geosciences, China University of Petroleum, Qingdao, Shandong, 266580, China;
3. College of Earth and Engineering, Shandong University of Science and Technology, Qingdao, Shandong, 266590, China

摘要

摘要: 西湖凹陷是中国东部近海中、新生代叠合含油气盆地东海陆架盆地的重要组成部分，其断裂体系发育时空差异特征不仅决定了盆地结构，也控制了油气成藏。本文运用最新的三维地震连片资料及钻井资料，对西湖凹陷断裂体系的发育特征及其控盆效应进行了系统分析，区划出新生代盆地基底先存、裂陷拉张及反转挤压3类不同成因类型的断裂体系，明确了NW（NWW）向先存基底断裂对新生代西湖凹陷斜坡带、中央反转带的南北分区效应；揭示了新生代裂陷早期（前平湖组沉积期）由NE-SW向断裂主控至裂陷晚期（平湖组沉积期）由近SN向断裂主控的转变；阐明了纵张、横张及逆断（反转）等龙井、冲绳运动挤压反转形成的断裂体系与反转背斜的成因联系。研究成果对于认识西湖凹陷乃至整个东海陆架盆地构造差异演化过程与机理具有理论意义，也可为该地区油气勘探实践提供指导。
- 断裂体系 /
- 控盆效应 /
- 西湖凹陷
Abstract: The Xihu Sag is an important Meso-Cenozoic superimposed petroliferous basin in the East China Sea Shelf Basin offshore eastern China. The spatiotemporal variation characteristics of its fault system development not only determine the basin structure but also control hydrocarbon accumulation. This paper uses the latest integrated 3D seismic data and drilling data to systematically analyze the developmental characteristics and basin-controlling effects of the fault system in the Xihu Sag, classifying three genetically distinct fault types: pre-existing Cenozoic basement faults, rift-related extensional faults, and inversion-related compressional faults. It clarifies the north-south partitioning effect of NW (NWW)-trending pre-existing basement faults on the Cenozoic slope belt and central inversion zone of the Xihu Sag; reveals the transition from NESW-trending faults dominating the early rifting stage (pre-Pinghu Formation deposition) to near SN-trending faults dominating the late rifting stage (Pinghu Formation deposition); and elucidates the genetic relationships between compressional inversion fault systems (longitudinal tension, transverse tension, and reverse faults) formed during the Longjing and Okinawa tectonic movements and inversion anticlines. The research results hold theoretical significance for understanding the tectonic differential evolution process and mechanisms of the Xihu Sag and even the entire East China Sea Shelf Basin, and can provide guidance for hydrocarbon exploration practices in this region.
- Fault controlled system /
- Basin-controlling effects /
- Xihu Sag

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