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天然气地球科学

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地震沉积学在河流—三角洲沉积相及有利砂体预测方面的应用

黎祺,胡明毅   

  1. 1.长江大学油气资源与勘察技术教育部重点实验室，湖北 武汉 430100;2.长江大学地球科学学院，湖北 武汉 430100
  • 收稿日期:2014-01-14 修回日期:2014-04-03 出版日期:2014-09-10 发布日期:2014-09-10
  • 通讯作者: 胡明毅(1965-)，男，湖北荆门人，教授，博士生导师，主要从事沉积学与层序地层研究. E-mail:humingyi65@163.com
  • 作者简介:黎祺(1991-)，男，湖北荆州人，硕士研究生，主要从事沉积学研究. E-mail：yourslqi@163.com.
  • 基金资助:

    国家科技重大专项（编号:2011ZX05023-001）资助.

Application of Seismic Sedimentology in River-Delta Facies and Sandstone Body Prediction

LI Qi，HU Ming-yi   

  1. 

    (1.Key Laboratory of Exploration Technologies for Oil and Gas Resources,Ministry of Education,Yangtze University,
    Wuhan 430100,China;2.School of Geoscience,Yangtze University,Wuhan 430100,China)
  • Received:2014-01-14 Revised:2014-04-03 Online:2014-09-10 Published:2014-09-10

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503

摘要：

以精细岩心观察描述为基础，根据岩石类型、沉积构造及沉积序列等相标志，对研究区内HG组重点层段沉积相类型及特征进行了分析，在此基础上结合地震属性提取和砂体反演等地震沉积学研究手段，对研究区重点含气层段沉积相平面展布特征进行了刻画，预测了研究区有利砂体分布。研究表明研究区主要发育曲流河相和三角洲相沉积，主要砂体类型为曲流河边滩和三角洲平原分流河道砂体；纵向上自下而上水体由浅逐渐变深；在H6y时期，河道砂体沉积厚度最大，为储集砂体发育的最好时期；研究区有利储层砂体最有利区主要集中在中部和西南部，可作为下一步勘探开发的目标区。

关键词: 地震沉积学, 地震属性, 波阻抗反演, 沉积相, 砂体分布预测

Abstract:

Based on meticulous core observation and description,according to lithofacies,sedimentary structures and sequence,the depositional facies of key sections of Huagang Formation in the study area were analyzed.On this basis,combining with seismic data such as seismic attribution and inversion,the distribution of favorable sandbody in this area is also studied in detail.The results show that the main types of sedimentary facies are composed of meandering river and delta facies,and sandstone is mainly developed in point bar and distributary channel of delta plain.From the bottom to the top of this formation,the sedimentary water changed from shallow to deep.Channel sandbody with max thickness is mainly developed in the stage of H6y.The central and southwest part with widely developed sandstone can be targets for further exploration and development.
 
 

Key words: Seismic sedimentology, Seismic attribute, Impedance inversion, Sedimentary facies, Sandstone body prediction

中图分类号: 

  • TE121.3
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