|本期目录/Table of Contents|

[1]周心怀,蒋一鸣,唐贤君.西湖凹陷成盆背景、原型盆地演化及勘探启示*[J].中国海上油气,2019,31(03):1-10.[doi:10.11935/j.issn.1673-1506.2019.03.001]
 ZHOU Xinhuai,JIANG Yiming,TANG Xianjun.Tectonic setting, prototype basin evolution and exploration enlightenment of Xihu sag in East China Sea basin[J].China Offshore Oil and Gas,2019,31(03):1-10.[doi:10.11935/j.issn.1673-1506.2019.03.001]
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西湖凹陷成盆背景、原型盆地演化及勘探启示*()

《中国海上油气》[ISSN:1673-1506/CN:11-5339/TE]

卷:
第31卷
期数:
2019年03期
页码:
1-10
栏目:
东海盆地油气勘探开发成果专辑
出版日期:
2019-06-25

文章信息/Info

Title:
Tectonic setting, prototype basin evolution and exploration enlightenment of Xihu sag in East China Sea basin
文章编号:
1673-1506(2019)03-0001-10
作者:
周心怀蒋一鸣唐贤君
中海石油(中国)有限公司上海分公司 上海 200335
Author(s):
ZHOU XinhuaiJIANG YimingTANG Xianjun
CNOOC China Limited, Shanghai Branch, Shanghai 200335, China
关键词:
西湖凹陷 成盆背景 原型盆地演化 断陷盆地 盆地类型 勘探启示
Keywords:
Xihu sag tectonic setting prototype basin evolution fault basin basin type exploration enlightenment
分类号:
TE121.1
DOI:
10.11935/j.issn.1673-1506.2019.03.001
文献标志码:
A
摘要:
基于太平洋板块俯冲作用下的东亚陆缘背景,结合盆地结构特征,分析了东海西湖凹陷成盆演化过程。在成盆动力背景上,西湖凹陷新生代断陷盆地发育阶段东亚陆缘中段经历了安第斯型陆缘裂解消亡,并向岛弧型陆缘转变的过程,至断陷结束后的渐新世才逐步开始发育典型沟-弧-盆体系; 在成盆演化过程上,中始新世平湖运动、始新世末玉泉运动、渐新世末花港运动和中新世末龙井运动期是西湖凹陷成盆过程转变的关键期,应力背景分别为伸展方向转变、伸展结束、挤压开始和挤压显著增强; 在原型盆地演变上,现今盆地为陆缘背景下的分隔型断陷盆地、整体型断-拗转换盆地、大型拗陷盆地和压陷萎缩盆地的垂向叠置。在此基础上,进一步探讨了盆地类型对煤系烃源岩及油气运移的指示意义。
Abstract:
Based on the continental marginal background of the Pacific plate subduction, and combined with the structural characteristics of the basin, this paper analyzes the basin forming and evolution processes of the Xihu sag in the East China Sea basin. On the background of basin-forming dynamics, the middle segment of the East Asia continental margin experienced cracking and extinction of Andean-type continental margin, and the transition to the island-arc continental margin during the developmental stage of the Cenozoic fault basin in the Xihu sag, and the typical trench-arc-basin system was gradually developed until the end of rifting in the Oligocence. During the basin forming and evolution, the Middle Eocene Pinghu Movement, the Yuquan Movement at the end of the Eocene, the Huagang Movement at the end of Oligocene and the Longjing Movement at the end of Miocene were the critical periods of the basin forming and evolution in Xihu sag. The stress backgrounds are the extension direction shifting, the end of extension, the extrusion starting and the significantly enhanced extrusion, respectively. During the evolution of the prototype basin, the existing basin is the vertical superimposition of the isolated fault basin under the continental margin background, the integral fault-depression conversion basin, the large depression basin, and the down-warped shrinkage basin. On this basis, the significance of basin type to coal-bearing source rocks and hydrocarbon migration was further discussed.

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备注/Memo

备注/Memo:
*“十三五”国家科技重大专项“东海深层低渗-致密天然气勘探开发技术(编号:2016ZX05027)”、中海石油(中国)有限公司科技项目“西湖凹陷平湖斜坡带岩性-地层油气藏勘探潜力研究(编号:YXKY-2017-SH-01)”部分研究成果。
第一作者简介: 周心怀,男,教授级高级工程师,2008年毕业于中国地质大学(北京),获博士学位,长期从事海上油气勘探综合研究。地址:上海市长宁区通协路388号中海油大厦(邮编:200335)。E-mail:zhouxh3@cnooc.com.cn。
更新日期/Last Update: 2019-05-20