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天然气地球科学

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渤海湾盆地歧口18-1沙河街组浊积扇高分辨地震储层预测

尹楠鑫，徐怀民，谭吕，谭建财，李明映，龙坤   

  1. 1.中国石油大学地球科学学院，北京 102249；2.中海油天津分公司开发部,天津 300452；
    3.中海油有限公司湛江分公司,广东 湛江 524000；4.中国石化普光气田分公司,四川 达州 635000；
    5.南充合能压缩天然气有限公司 四川 南充，637000
  • 收稿日期:2013-03-23 修回日期:2013-06-06 出版日期:2014-02-10 发布日期:2014-02-10
  • 通讯作者: 尹楠鑫yinnanxin236237@163.com E-mail:yinnanxin236237@163.com
  • 作者简介:尹楠鑫(1982-),男,四川武胜人,博士研究生,主要从事油气田开发地质研究. E-mail:yinnanxin236237@163.com
  • 基金资助:


    国家重大科技专项 “岩性地层油气藏成藏规律、关键技术及目标评价”(编号:2011ZX05001)资助.
    〖HTH〗作者简介〖HTSS〗:
    .

High Resolution Turbidite Fan Reservoir Prediction of Shahejie Formation in Qikou18-1 Oilfield,Bohai Bay Basin

YIN Nan-xin，XU Huai-min，TAN Lv，TAN Jian-cai，LI Ming-ying，LONG Kun   

  1. 1.College of Geosciences,China University of Petroleum,Beijing 102249,China;
    2.Department of Development,Tianjin Company,CNOOC,Tianjin 300452,China;
    3.Zhanjiang Branch of CNOOC Ltd.,Zhanjiang 524000,China;
    4.Puguang Gas Field Branch,Dazhou 635000,China;
    5.Nanchong Heneng Compressed Natural Gas Company Limited,Nanchong 637000,China
  • Received:2013-03-23 Revised:2013-06-06 Online:2014-02-10 Published:2014-02-10

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496

摘要：

渤海湾盆地歧口18-1沙河街组浊积扇油藏储层非均质性强，砂体横向变化快。采用地震属性分析、测井约束反演和地质统计反演等方法，对稀井网条件下歧口18-1沙河街组浊积扇优质储层的分布规律进行预测，为该油田开发方案编制井位的部署提供了地质依据。通过优选的地震属性均方根振幅的空间分布确定有利的储集相带浊积扇的分布及其几何形态；应用基于模型的测井约束反演获取的三维波阻抗数据体预测浊积扇内部复合储层砂体的分布范围；引入地质统计反演，通过波阻抗与泥质含量的协同模拟，精细刻画储集砂体的内部结构，提高优质储层的预测精度。这种应用三维地震资料从有利的沉积相带经复合储集砂体到内部储层结构、预测精度逐级提高的储层地震预测方法尤其适合稀井网条件下横向变化快的浊积扇储层砂体的研究。

关键词: 浊积扇, 地震属性分析, 测井约束反演, 地质统计反演, 储层预测

Abstract:

Shahejie Formation reservoir in QK18-1 Block belongs to turbidite fan deposition,with high heterogeneity and rapidly lateral changed sand bodies.High resolution superior quality reservoir prediction of Shahejie Formation turbidite fan reservoir in Qikou 18-1 Oilfield was carried out through seismic attributes analysis,log constrained inversion and geostatistical inversion,which provides a geological basis for the oilfield development plan.The scope of turbidite fan and its geometry were determined with the distribution of root-mean-square amplitude,one of the preferred seismic attributes,and as a result,the favorable sedimentary facies zone is targeted within the study area．Then,the compound sandstones within the turbidite fan were predicted with three dimensional wave impedance data volume derived from log constrained inversion based geological model;Finally,geostatistical inversion,which collaboratively simulated the wave impedance and shale content,was applied to improve the resolution and credibility of the seismic reservoir prediction.Therefore the internal architecture of the compound turbidite fan sandstones was able to be characterized clearly.Thus the distribution of superior quality reservoir was predicted reliably.The methodology of seismic reservoir prediction,with steadily increasing accuracy from favorable deposition facies,to compound sandstones,finally till internal sandstone architecture,is particularly suitable for turbidite fan reservoir study in the condition of wide spaced wells.

Key words: Turbidite fan, Seismic attribute analysis, Log constrained inversion, Geostatistical inversion, Reservoir prediction

中图分类号: 

  • TE132.1
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