石油与天然气地质 ›› 2019, Vol. 40 ›› Issue (2): 215-222.doi: 10.11743/ogg20190201

• 油气地质 • 上一篇    下一篇

渤海湾盆地南部走滑构造带发育特征及其控油气作用

周心怀1, 张新涛1, 牛成民1, 刘豪2, 黄江波1   

  1. 1. 中海石油(中国)有限公司 天津分公司, 天津 300452;
    2. 中国地质大学(北京) 海洋学院, 北京 100083
  • 收稿日期:2017-09-13 修回日期:2018-12-04 出版日期:2019-04-28 发布日期:2019-01-23
  • 作者简介:周心怀(1970-),男,教授级高级工程师,油气勘探研究与管理。E-mail:zhouxh3@cnooc.com.cn。
  • 基金资助:

    国家科技重大专项(2011ZX05023-002)。

Growth of strike-slip zone in the southern Bohai Bay Basin and its significances for hydrocarbon accumulation

Zhou Xinhuai1, Zhang Xintao1, Niu Chengmin1, Liu Hao2, Huang Jiangbo1   

  1. 1. CNOOC Tianjin Branch Company, Tianjin 300452, China;
    2. School of Ocean Sciences, China University of Geosciences(Beijing), Beijing 100083, China
  • Received:2017-09-13 Revised:2018-12-04 Online:2019-04-28 Published:2019-01-23

摘要:

郯庐走滑断裂带穿过渤海湾盆地黄河口凹陷和莱西构造带,为了探讨走滑构造带内断裂发育特征、成因机制及其对油气控制作用,依据方差切片、三维可视化及精细地震解释技术对走滑构造带进行研究。结果表明,渤海湾盆地南部走滑构造带内发育“云梯式”和“栅栏式”两种断裂体系,断裂演化主要经历了中生代左旋走滑、古近纪伸展-走滑和新近纪强烈右旋走滑3个阶段。走滑构造带不仅控制了圈闭的形成,而且还影响了中、深层沉积体系的分布和油气的富集层位。结合不同构造部位油气富集特征,建立了走滑构造带内“中转站式”、“网毯式”、“复合式”及“阶梯式”等4类油气成藏模式,近些年指导发现了一系列大中型油气田,为下一步油气勘探指明了方向。

关键词: 成藏模式, 走滑构造带, 郯庐断裂, 渤海湾盆地

Abstract:

Tanlu strike-slip fault zone transverses the Huanghekou Sag and Laixi structural belt in the southern Bohai Bay Basin.We studied the characteristics and genetic mechanism of faults within the strike-slip zone,as well as its controlling effect on hydrocarbon accumulation,by using variance slicing,3D visualization and fine seismic interpretation technologies.The results show that there are two kinds of fault systems in the strike-slip fault zone in the southern Bohai Bay Basin:the "aerial ladder" type and the "palisade" type.The fault evolution has experienced three stages including sinistral strike-slip in the Mesozoic,extension-strike-slip in the Paleogene and intensive dextral strike-slip in the Neogene.The strike-slip belt not only controls the formation of traps,but also affects the distribution of sedimentary system in medium-to-deep layers as well as the horizons of hydrocarbon accumulation.According to the characteristics of hydrocarbon enrichment at different structural locations,four types of hydrocarbon accumulation patterns within the strike-slip belt were established,namely the transfer-station,meshwork-carpet,composite and ladder types,which have contributed to the successive discovery of large-or medium-sized oil and gas fields in recent years and will serve as a practical guidance for future hydrocarbon exploration.

Key words: accumulation pattern, strike-slip structural zone, Tanlu fault, Bohai Bay Basin

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