三瞬属性在南黄海第四纪地震地层分析中的应用&nbsp;

赵维娜; 张训华; 吴志强; 密蓓蓓; 陈珊珊

doi:10.3969/j.issn.0253-4193.2016.07.011

三瞬属性在南黄海第四纪地震地层分析中的应用

doi: 10.3969/j.issn.0253-4193.2016.07.011

1.
中国海洋大学海洋地球科学学院, 山东青岛 266100;青岛海洋地质研究所, 山东青岛 266071;海洋国家实验室海洋矿产资源评价与探测技术功能实验室, 山东青岛 266071
2.
青岛海洋地质研究所, 山东青岛 266071;海洋国家实验室海洋矿产资源评价与探测技术功能实验室, 山东青岛 266071;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

基金项目: 大陆架科学钻探项目(GZH201100202);国家重点基础研究发展规划项目(2013CB429701)。

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出版历程
- 收稿日期: 2015-07-29

Application of three instantaneous attributes in the analysis of Quaternary seismic strata in the southern Yellow Sea

1.
College of Marine Geosciences, Ocean University of China, Qingdao 266100, China;Qingdao Institute of Marine Geology, Qingdao 266071, China;Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
2.
Qingdao Institute of Marine Geology, Qingdao 266071, China;Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;Key Laboratory of Marine Hydrocarbon Resource and Environmental Geology, Ministry of Land and Resources, Qingdao 266071, China

摘要

摘要:
浅剖和单道地震是大范围研究新近纪以来沉积特征的主要技术方法,由于地震资料分辨率的限制,往往只能划分大的沉积单元,不能识别亚相、微相等,而地震资料的瞬时属性可以更加精细地刻画地层信息。基于2013年在南黄海陆架获得的单道地震资料,对南黄海中西部海域第四系进行了分析,并利用单道资料的三瞬属性对地层进行地震地层单元划分、沉积环境分析,总结出该区域不同沉积相的三瞬波阻特征。研究结果表明,在测线的Qc2钻孔位置处,根据三瞬属性在海底以下74.64 m深度内划分了7个地震地层沉积单元,并划分出多个亚相。它所反映的沉积相与该区已知Qc2钻孔的地层对应度较高。瞬时相位较为清楚的显示地下地层的接触情况,更好地展示了地震层序在空间上的关系,解决了该测线在常规地震剖面上无法清晰、精细识别沉积相的问题。三瞬属性的应用可以在缺少钻井资料时提高在地震资料剖面划分地层、识别接触面的能力,为大陆架科学钻探项目中未知井位选址提供参考。
- 瞬时相位 /
- 瞬时振幅 /
- 瞬时频率 /
- 第四系划分
Abstract:
Single channel seismic and shallow profiles are the main methods to research sedimentary features with a wide range since Cenozoic. Because of the limited resolution of seismic data, only larger sedimentary units can be recognized. It is difficult to divide the sub-facies and micro-facies. However, three instantaneous attributes can be more refined to describe the formation information. Based on the data obtained in 2013, which is belong to the Southern Yellow Sea, is used to analyze the Quaternary, recognize the seismic stratigraphic units, talk about the sedimentary environment and summarize the wave characteristics with instantaneous attributes. The research results show that the layer which is in 74.64 m depth below the seafloor are divided into 7 seismic stratigraphic sedimentary units and more sub-units at the Core Qc2 in the WE2 line according to the three instantaneous attributes. The instantaneous phase displays the contract of stratum clearly and the relationship of sequence in space better, solving a worse recognition in the seismic profile. The Quaternary sedimentary based on instantaneous attributes' partition matches well with Core Qc2, which is in the same location. The study found that the application of three instantaneous attributes could enhance the ability to identify the contact surface in the profiles with the absence of drilling data and provide reference to well location of the plan in the Chinese continental scientific drilling.
- instantaneous phase /
- instantaneous amplitude /
- instantaneous frequency /
- the Quaternary division

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