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莺歌海盆地东方13-2气田地震勘探技术应用研究
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  • 英文篇名:Application of high density seismic exploration technology for Dongfang 13-2 gas field in Yinggehai basin
  • 作者:胡高伟 ; 范彩伟 ; 潘光超 ; 刘爱群 ; 张明伟 ; 徐涛
  • 英文作者:HU Gao-wei;FAN Cai-wei;PAN Guang-chao;LIU Ai-qun;ZHANG Ming-wei;XU Tao;CNOOC Limited Zhanjiang;
  • 关键词:莺歌海盆地 ; 海底扇 ; 非均质性 ; 常规地震 ; 高密度地震采集 ; 多次波衰减 ; 宽频处理 ; 双方位高精度层析成像
  • 英文关键词:Yinggehai basin;;Submarine fan;;Heterogeneity;;Conventional seismic;;High-density seismic acquisition;;Multiple attenuation;;Broadband processing;;High-precision tomographic imaging of two-azimuth
  • 中文刊名:地球物理学进展
  • 英文刊名:Progress in Geophysics
  • 机构:中海石油(中国)有限公司湛江分公司;
  • 出版日期:2019-03-05 17:18
  • 出版单位:地球物理学进展
  • 年:2019
  • 期:05
  • 基金:国家重大专项课题“莺琼盆地高温高压天然气富集规律与勘探开发关键技术(三期)”(2016ZX05024-005)资助
  • 语种:中文;
  • 页:337-345
  • 页数:9
  • CN:11-2982/P
  • ISSN:1004-2903
  • 分类号:P631.4;P618.13
摘要
东方13-2气田的发现揭开了莺歌海盆地中深层高温高压领域勘探的序幕,研究表明东方13-2气田储层为西物源海底扇重力流沉积,该海底扇储层具有多期次发育、由南向北逐渐迁移的特征,各期次海底扇朵叶砂体纵向上互相叠置,横向上连片分布,受常规窄方位地震资料分辨率限制,砂体接触关系及储层连通性研究难度大;其次,多口井的钻探证实东方13-2气田储层横向非均质性强,优质储层和差储层均表现为相同的地震反射特征,振幅类属性无法表征该区储层属性,气田气水分布也非常复杂,存在孤立水体,开发井井深设计钻遇优质储层的同时考虑如何规避孤立水体难度大.分析认为常规采集的三维地震资料已不能满足东方13-2气田砂体精细刻画描述、烃检及气田ODP优化工作的需求.针对以上研究面临的问题,本文采用多方位、高密度地震采集技术,通过联合多次波衰减技术、宽频处理技术、双方位高精度层析成像技术及Kichhoff叠前深度偏移技术等处理手段,为该区岩性储层的精细描述及ODP优化工作的需要提供了高品质地震资料.
        The discovery of Dongfang 13-2 gas field opened the prelude to the exploration in high-temperature and high-pressure areas of middle and deep layer in the Yinggehai basin.The study shows that the Dongfang 13-2 gas field is submarine fan gravity flow deposition from the western source, whose reservoir is characterized by multiple stages vertically stacking and lateral distribution with migrating from the South to the north. Owing to the lack of the resolution of conventional seismic data, it's much more complex and difficult to study sand Body contact relationship and reservoir connectivity. Secondly, Drilling of multiple wells have confirmed that the reservoir in Dongfang 13-2 gas field has strong lateral heterogeneity. The properties of the amplitude properties cannot characterize the reservoir properties in this area because of the same seismic reflection intensity showed in both high-quality reservoirs and poor reservoirs. Isolated water bodies increased difficulty in drilling high quality reservoir while considering how to avoid isolated water bodies. It is analyzed that the conventional 3 D seismic data can no longer meet the requirements for fine description of sand bodies in Dongfang 13-2 gas field, hydrocarbon detection, and optimization of gas field ODP. In view of the above problems, this paper uses multi-azimuth and high-density seismic acquisition technology combined with multiple attenuation methods, broadband processing techniques, and high-resolution tomographic imaging techniques can provide high-quality seismic data for accurate description of lithologic reservoir and ODP optimization.
引文
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