天然气地球科学

• 天然气地质学 • 上一篇    下一篇

南黄海盆地南部坳陷三叠纪以来的构造演化与油气成藏

  

  1. 1.国土资源部海洋油气资源与环境地质重点实验室,山东 青岛 266071; 2.青岛海洋地质研究所,山东 青岛 266071
  • 收稿日期:2013-08-05 修回日期:2014-01-27 出版日期:2014-07-10 发布日期:2014-07-10
  • 通讯作者: 张训华(1961-),男,山东淄博人,研究员,博士生导师,主要从事地球物理和大地构造研究.E-mail:xunhuazh@vip.sina.com. E-mail:wangmingjian0328@qq.com
  • 作者简介:王明健(1983-),男,山东青岛人,博士后,主要从事盆地构造与油气成藏研究.
  • 基金资助:

    国家自然科学基金重大国际合作项目(编号;41210005);山东省博士后创新项目专项资金(编号:201201001);国土资源部海洋油气资源与环境地质重点实验室开放基金项目(编号:MRE201223)

Tectonic Evolution and Hydrocarbon Accumulation Since Triassic of the Southern Depression in South Yellow Sea Basin

  1. 1.The Key Lahoratory of Marine Hydrocarhon Resources and Environmental Geology, Ministry of Land and Resources,Qingdao 266071,China; 2.Qingdao Institute of Marine Geology,Qingdao 266071,China
  • Received:2013-08-05 Revised:2014-01-27 Online:2014-07-10 Published:2014-07-10

摘要:

目前已在陆上苏北盆地发现多个中古生界气田,但在其东侧的南黄海盆地南部坳陷一直没有获得勘探突破。为了寻找后备油气基地,利用2Dmove软件对研究区内典型地震剖面进行了平衡剖面分析,恢复了三叠纪以来的构造演化过程,在此基础上分析了三叠系油气成藏条件,总结出了有利成藏模式。结果表明:南部坳陷三叠纪以来共经历了4期构造演化过程;研究区东部三叠系烃源岩仅发生过一次生烃,而中西部可能存在二次生烃;古近纪Ed—Es阶段构造活动剧烈,是所有圈闭的最终定型期,同时也是早期所形成油气藏的强烈破坏时期;综合油气成藏条件分析认为研究区主要存在3种有利油气成藏模式。研究认为,南黄海盆地南部坳陷的三叠系油气成藏规律主要受构造演化所控制,研究区东部和中西部发育不同的油气成藏模式。

关键词: 南黄海盆地, 南部坳陷, 三叠系, 构造演化, 油气成藏

Abstract:

At present several gas fields have been discovered in the Mesozoic-Paleozoic of the Subei Basin,but exploration has not got breakthrough in the southern depression of the South Yellow Sea Basin which is located to the east of Subei Basin.In order to open up the hydrocarbon reserve,we have conducted balanced cross-section analysis of typical seismic section in the study area using 2Dmove software and recovered the tectonic evolution since Triassic.On this basis,we have analyzed hydrocarbon accumulation conditions and concluded the favorable accumulation models.The studying area has undergone four stages of basin evolution since Triassic.Triassic source rocks only experienced one hydrocarbon generation in eastern part of the study area,while the source rocks may experience secondary hydrocarbon generation in the mid-west part.Tectonic activity was intense in Ed-Es stage of Paleogene when all the traps fell into final pattern and reservoirs formed in the early stage were strongly destroyed.By the analysis of Triassic hydrocarbon accumulation in the Southern Depression,we proposed three accumulation models.Through the above research we know that hydrocarbon accumulation of Triassic in Southern Depression of the South Yellow Sea Basin is mainly controlled by the tectonic evolution.Accumulation models in the eastern part of the study area were different from those in the mid-west part.

Key words: South Yellow Sea Basin, Southern Depression, Triassic;Tectonic evolution, Hydrocarbon accumulation

中图分类号: 

  • TE122.3

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