石油学报 ›› 2002, Vol. 23 ›› Issue (S1): 29-33.DOI: 10.7623/syxb2002S1007

• 论文 • 上一篇    下一篇

AVO处理技术在天然气勘探中的应用

赵祥春   

  1. 中原油田分公司勘探事业部 河南濮阳457001
  • 收稿日期:2002-04-22 修回日期:2002-07-10 出版日期:2002-12-25 发布日期:2013-07-08
  • 作者简介:赵祥春,男,1963年2月生,1982年毕业于重庆石油学校石油地质专业.现为中原油田分公司勘探事业部工程师,主要从事石油天然气勘探项目研究与管理工作.

THE APPLICATION OF AVO TECHNOL-OGY IN GAS EXPLORATION

ZHAO Xiang-chun   

  1. Department of Exploration, Zhongyuan Oil Field Company, Puyang 457001, China
  • Received:2002-04-22 Revised:2002-07-10 Online:2002-12-25 Published:2013-07-08

摘要: 给出了AVO处理技术在天然气勘探应用中的一个实例.研究表明,AVO处理中叠前振幅处理是AVO属性处理的前提.以M天然气田中的1条二维地震测线为例,在叠前振幅处理中考虑消除地震波的球面扩散、大地吸收、检波器的组合效应,以及激发接收的非均一性等对叠前记录振幅的影响,从而尽量只保留了入射角变化对叠前振幅的影响;在AVO属性处理中,利用Shuey公式,获得了P波、G波、拟泊松比和碳氢检测等 AVO属性剖面.叠前振幅分析结果以及AVO属性异常显示和井数据吻合很好.

关键词: 叠前振幅, Shuey近似, AVO属性, 天然气藏, 应用

Abstract: The paper presents a history case in gas exploration with AVO technology.The study indicates that prestack amplitude preserving should be the foundation of AVO attribute processing..4s the example of a 2-D seismic line reflected data processing in M gas field,it's suggested removing the influence of spherical divergence,absorption,array and reword condition on reflected amplitude except incidence angle. In AVO attribute processing, it has obtained attribute-processing sections of pseudo-P wave,G wave,pseudo-Poisson ratio and hydrocarbon profiles using Shury approximation formula. The analysis of prestaek amplitude and AVO attribute anomalies coincided perfectly with drilling data.

Key words: prestack amplitude, shuey approximation, AVO attribute, gas reservoir

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