石油学报 ›› 2002, Vol. 23 ›› Issue (4): 42-45.DOI: 10.7623/syxb200204009

• 地质勘探 • 上一篇    下一篇

裂缝介质中地震波方位AVO特征分析

范国章, 牟永光, 金之钧   

  1. 石油大学盆地与油藏研究中心, 北京, 102249
  • 收稿日期:2001-04-16 修回日期:2002-01-18 出版日期:2002-07-25 发布日期:2010-05-21
  • 作者简介:范国章,男,1973年生,2001年毕业于石油大学,现为中国石油天然气集团公司杭州石油地质研究所工程师,主要研究方向为石油地质和地球物理勘探.
  • 基金资助:
    国家重点基础研究规划项目(G19990344)资助.

Amplitude virsus offset characteristics of azimuth of seismic wave in fractured reservoir

FAN Guo-zhang   

  1. University of Petroleum, China, Beijing 102200, China
  • Received:2001-04-16 Revised:2002-01-18 Online:2002-07-25 Published:2010-05-21

摘要: 预测储集层中的有利裂缝发育带及裂缝发育的主方位在油气勘探开发中具有重要的意义,裂缝的存在将导致介质属性的变化,不同的裂缝发育模式具有不同的表现特征,地震反射波振幅的方位变化就是一个重要的特征。对不同裂缝各向异性地质模型的地震波方位AVO特性进行了分析,建立地震波方位AVO的变化特征与裂缝走向和倾向的关系,尤其是具有一定倾斜角度的裂缝对地震波方位AVO的响应特征,为利用振幅变化信息预测裂缝提供了依据。将其应用于千米桥古潜山有利裂缝发育带的分析,取得了一些效果,促进了该方法在油气勘探中的应用。

关键词: 裂缝, 各向异性, 地震波, 方位, 振幅炮检距关系

Abstract: It is important to predict favorable fractured reservoir and its main azimuth of fracture during the exploration and exploitation of petroleum.The distribution of fractures will change the property of reservoir.The azimuthal change of seismic reflection amplitude is an important character.The amplitude versus offset (AVO) features of azimuth of seismic wave in anisotropic geological models with different distribution of fractures were analyzed.The relation between the AVO characteristics of seismic wave and the fracture strike and dip was built,especially for the tilt fracture,which provided the foundation to predict favorable fractured reservoir.The theory was also applied to analyze the favorable fractured zone of paleo buried hill in Qianmiqiao.The application result is of benefit to improve this method being used in petroleum exploration.

Key words: fracture, anisotropy, seismic wave, azimuth, amplitude versus offset

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