东海盆地西湖凹陷中央反转构造带发育主控因素及宁波背斜形成过程

doi:10.7623/syxb202102003

石油学报 ›› 2021, Vol. 42 ›› Issue (2): 176-185.DOI: 10.7623/syxb202102003

东海盆地西湖凹陷中央反转构造带发育主控因素及宁波背斜形成过程

邹玮¹, 余一欣^2,3, 刘金水¹, 蒋一鸣¹, 唐贤君¹, 陈石^2,3, 余浪^2,3

1. 中海石油(中国)有限公司上海分公司上海 200030;
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:2019-05-13 修回日期:2020-11-05 出版日期:2021-02-25 发布日期:2021-02-07
通讯作者: 余一欣,男,1977年9月生,2000年获长安大学学士学位,2006年获中国石油大学(北京)博士学位,现为中国石油大学(北京)副教授、博士生导师,主要从事含油气盆地构造地质学教学和科研工作。Email:yuxin0707@163.com
作者简介:邹玮,男,1980年12月生,2004年获成都理工大学学士学位,2007年获成都理工大学硕士学位,现为中海石油(中国)有限公司上海分公司高级工程师,主要从事油气勘探综合研究。Email:zouwei2@cnooc.com.cn
基金资助:
国家自然科学基金项目（No.42072149）和国家科技重大专项（2016ZX05027-001，2016ZX05026-007-006）资助。

Main controlling factors of the central inversional structure belt and the development of Ningbo anticline in Xihu sag,East China Sea Basin

Zou Wei¹, Yu Yixin^2,3, Liu Jinshui¹, Jiang Yiming¹, Tang Xianjun¹, Chen Shi^2,3, Yu Lang^2,3

1. Shanghai Branch, CNOOC China Limited, Shanghai 200030, China;
2. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;
3. College of Geosciences, China University of Petroleum, Beijing 102249, China

Received:2019-05-13 Revised:2020-11-05 Online:2021-02-25 Published:2021-02-07

摘要/Abstract

摘要： 西湖凹陷中央反转构造带是东海陆架盆地反转构造发育最典型的地区，也是有利的油气勘探区带。利用地震资料解释结果和离散元数值模拟方法，分析了西湖凹陷中央反转构造带发育特征及其主控因素，并解剖了宁波背斜构造带的形成过程。依据变形特征将西湖凹陷中央反转构造带由北向南划分为嘉兴、宁波、黄岩和天台4个构造段，对应构造带形态由紧闭背斜逐渐变为比较宽缓的背斜，且反转构造带的发育范围也逐渐扩大。西湖凹陷基底的不均一性和东部边界断层产状的变化对中央反转构造带的发育具有重要的控制作用。基底刚性异常体的位置影响了中央反转构造带的背斜分布，东部边界断层的产状及其与基底刚性异常体之间的距离影响了背斜形态及反转强度。受基底刚性异常体的影响，宁波背斜的发育具有递进式演变特征。

关键词: 西湖凹陷, 反转构造, 基底刚性异常体, 边界断层, 数值模拟, 递进式演变

Abstract: The central inversional structure belt in Xihu sag is the most typical area for the development of inversion structures in the East China Sea Basin, and also a favorable hydrocarbon exploration zone. Using the results of seismic data interpretation and discrete element numerical simulation, this paper analyzes the development characteristics and main controlling factors of the central inversional structure belt in Xihu sag, and dissects the formation processes of the Ningbo anticline structural belt. According to the deformation characteristics, the central inversional structure belt in Xihu sag is divided into four structural sections from north to south, i.e., Jiaxing, Ningbo, Huangyan and Tiantai. The shape of the structural belt gradually changes from a closed anticline to a relatively wide and gentle anticline, and the development of the inversion structure bel thas been gradually expanded. The heterogeneity of the basement and the changes in the occurrence of faults in Xihu sag on the east side has an important control effect on the development of the central inversional structure belt. The location of the rigid basement anomaly affects the distribution of anticlines in the central inversional structure belt.The occurrence of the eastern boundary fault and its distance from the rigid basement anomaly have infulence on the shape and inversion intensity of anticlines. Under the influence of rigid basement anomaly, the Ningbo anticline developed progressively.

Key words: Xihu sag, inversion structure, rigid basement anomaly, boundary fault, numerical simulation, progressive evolution

中图分类号:

TE121.2

邹玮, 余一欣, 刘金水, 蒋一鸣, 唐贤君, 陈石, 余浪. 东海盆地西湖凹陷中央反转构造带发育主控因素及宁波背斜形成过程[J]. 石油学报, 2021, 42(2): 176-185.

Zou Wei, Yu Yixin, Liu Jinshui, Jiang Yiming, Tang Xianjun, Chen Shi, Yu Lang. Main controlling factors of the central inversional structure belt and the development of Ningbo anticline in Xihu sag,East China Sea Basin[J]. Acta Petrolei Sinica, 2021, 42(2): 176-185.

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东海盆地西湖凹陷中央反转构造带发育主控因素及宁波背斜形成过程

Main controlling factors of the central inversional structure belt and the development of Ningbo anticline in Xihu sag,East China Sea Basin

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