节点文献

孟加拉扇某区块地层层序划分及典型地震相识别

Sequence stratigraphy and typical seismic facies in one exploration block of Bengal Fan

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具,请取消加速工具后下载。

【作者】 吴嘉鹏王英民马贵明龚承林张雷刘曾勤

【Author】 WU Jia-peng1,2,WANG Ying-min1,2,MA Gui-ming3,GONG Cheng-lin1,2,ZHANG Lei1,2,LIU Zeng-qin1,2 (1.Faculty of Natural Resources and Information Technology,China University of Petroleum,Beijing 102249,China;2.State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beijing 102249,China;3.China National Oil and Gas Exploration and Development Corporation,Beijing 10083,China)

【机构】 中国石油大学(北京)资源与信息学院中国石油大学(北京)油气资源与探测国家重点实验室中国石油天然气勘探开发公司

【摘要】 研究区位于孟加拉扇某区块水深大于2000m的陆坡深水区,区内缺乏典型的层序地层界面。该文以层序地层学理论为指导,通过地震属性、分频、地震相等分析,开展了层序地层划分及沉积体的识别。依据深水沉积旋回在地震剖面上振幅特征的变化,进行了层序界面的识别,进而在等时层序地层格架内研究地震相及沉积相的分布特征,参考深水沉积相发育模式,并结合"U"形相、丘状相、强振幅平行相、中弱振幅平行相以及透明杂乱反射相等5种典型地震相的外部形态、发育位置等,认为各地震相分别对应水道、水道堤岸、浊积朵体、深海泥岩以及块状搬运复合体等沉积单元,并指出典型地震相的分布特征,可辅助地层层序的划分。

【Abstract】 The study area is located in the deep-water area,with water depth beneath 2 000 m,so it is difficult to recognize the sequence boundary with the seismic termination.Based on sequence stratigraphy theory,seismic facies combining with seismic attribute and frequency division are applied to carry out the sequence stratigraphy division and deposition identification.According to the amplitude characteristics of deep water sedimentary cycles on seismic profiles,the sequence boundaries are identified.LST and T-HST developed in each third-order sequence.Characteristics of the seismic facies and the sedimentary facies are analyzed in the equitime sequence framework.Referred to the sedimentary facies model in the deep water,and integrated with the external configuration and the localization of the five typical seismic facies,it is regarded that the U-shaped facies,dome-shaped facies,parallel seismic facies with high amplitude,parallel seismic facies with mid-low amplitude and transparent and chaotic reflecting facies are respectively on behalf of incised channel,channel-levee complex,turbidite lobes,deep-water mudstone and mass-transport deposits.The distribution characteristics of the typical seismic facies are helpful to the recognition ofthe sequence boundaries.

【关键词】 层序地层地震相孟加拉扇
【Key words】 sequence stratigraphyseismic faciesBengal fan
【基金】 国家自然科学基金项目(编号:40972077)“深水重力流与底流交互作用的过程和响应——以台湾浅滩陆坡为例”资助
  • 【文献出处】 岩性油气藏 ,Lithologic Reservoirs , 编辑部邮箱 ,2010年02期
  • 【分类号】P539.2
  • 【被引频次】12
  • 【下载频次】565
节点文献中: 

本文链接的文献网络图示:

本文的引文网络