天然气地球科学 ›› 2008, Vol. 19 ›› Issue (2): 261–265.doi: 10.11764/j.issn.1672-1926.2008.02.261

• 天然气地球物理勘探 • 上一篇    下一篇

叠前地震反演在苏里格气田储层识别和含气性检测中的应用

李凌高1,2,甘利灯2,杜文辉2,戴晓峰2   

  1. (1.中国地质大学地球物理与信息技术学院,北京 100083; 2.中国石油勘探开发研究院物探技术所,北京 100083)
  • 收稿日期:2007-09-03 修回日期:2008-02-06 出版日期:2008-04-10 发布日期:2008-04-10
  • 通讯作者: 李凌高lilinggao@petrochina.com.cn. E-mail:lilinggao@petrochina.com.cn.
  • 基金资助:

    中油股份公司科技风险创新项目(编号:050511-1-6)资助.

Pre-stack Seismic Inversion Applied to Reservoir Prediction and Natural Gas Detection in SLG Gas Field

LI Ling-gao1, 2; GAN Li-deng2;DU Wen-hui2;DAI Xiao-feng2   

  1. (1.Geophysics and Information Technology School, China University of Geosciences, Beijing 100083, China;2.Geophysical Technology Department, Research Institute of Petroleum Exploration& Development, PetroChina, Beijing 100083,China)

  • Received:2007-09-03 Revised:2008-02-06 Online:2008-04-10 Published:2008-04-10

摘要:

介绍了叠前地震反演技术在苏里格气田有效储层识别和含气性检测中的应用。通过岩石物理分析建立了弹性参数与储层参数之间的联系,指出了工区内岩性、物性和流体的最敏感弹性参数。通过叠前地震反演获取了各种弹性参数反演结果,并根据岩石物理分析的结论将叠前地震反演结果进行综合解释,从密度和速度比交会图获得了岩性剖面,对识别出的砂岩根据反演的纵波阻抗计算了孔隙度剖面,对孔隙度大于5%的砂岩,利用笔者提出的新方法得到了含水饱和度剖面,在此基础获得了孔隙度含气饱和度乘积剖面

关键词: 叠前地震反演, 弹性参数, 岩石物理分析, 含气性检测

Abstract:

This paper presents an application of prestack seismic inversion technology to reservoir prediction and gas detection. By rock physical analysis, the relation between elastic parameters and reservoir properties is constructed. By pres-stack inversion, a number of various elastic parameters are obtained. The joint interpretation of these inverted parameters are then carried out in the guidance of the conclusions drawn from the rock physical analysis: lithology sections are obtained by cross-plotting density and Vp/Vs sections; porosity sections are transformed from Pimpedance sections for the predicted sands, water saturation sections are obtained from several elastic inversions using the new method given in this paper; the product of porosity and water saturation are then derived.

Key words: Pre-stack seismic inversion, Elastic parameters, Rock physical analysis, Gas detection.

中图分类号: 

  • TE132.1+4

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