新疆石油地质

新疆石油地质 ›› 2007, Vol. 28 ›› Issue (1): 122-124.

• 讨论与争鸣 • 上一篇    下一篇

高效气藏与低效气藏的AVO 异常响应特征

刘亚明1, 薛良清1, 潘仁芳2   

  1. 1.中国石油 石油勘探开发科学研究院, 北京 100083;
    2.长江大学 地球科学学院, 湖北 荆州, 434023
  • 收稿日期:2005-11-02 修回日期:2006-07-04 出版日期:2007-02-01 发布日期:2020-07-29
  • 作者简介:刘亚明(1980-), 男, 湖北广水人, 在读博士研究生, 石油地质,(Tel)13581916279(Email)liuyaminglove@163.com.
  • 基金资助:
    国家973发展规划项目, 测井、地质、地震综合评价天然气藏(2001CB209100)资助

AVO Abnormal Responses from Gas Pools with High-Low Effectiveness

LIU Ya-ming1, XUE Liang-qing1, PAN Ren-fang2   

  1. 1. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China;
    2. Institute of Earth Sciences, Yangtze University, Jingzhou, Hubei 434023, China
  • Received:2005-11-02 Revised:2006-07-04 Online:2007-02-01 Published:2020-07-29

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摘要： 以天然气藏的岩石物理实验为基础,总结储集层物性、岩性、含气性与振幅-炮检距关系(AVO)异常响应特征的内在关系,分析气层的AVO异常响应的敏感特征。利用AVO技术对高效气藏和低效气藏进行了变孔隙度和变含气饱和度模拟,得出含气性好的气藏AVO异常属于第三类,含气性差的气藏AVO异常属于一、二类的结论。其结果可以提高AVO解释参数的精度和流体性质识别的准确性,为区域评价提供数值上的参考。

关键词: 气藏, 孔隙度, 含气饱和度, 异常, 响应

Abstract: On the basis of petrophysical experiment of natural gas reservoir, the intrinsic relations between reservoir physical property, lithology, gas-bearing nature and AVO abnormal responses from gas reservoirs are summarized, including analysis of the responses sensitivity to the gas reservoirs. For gas reservoirs with high-low effectiveness, the variable porosity and variable gas saturation are simulated by AVO technique, coming to the conclusion that the AVO abnormal responses from gas reservoir with good gas-bearing property belong to Class-III, while those from one with poor gas-bearing property belong to Class-I and Class-II. Therefore, this AVO abnormal response could be used to improve the accuracy of parameters for interpretation and precision of fluid property recognition as references of regional prospecting evaluation.

Key words: gas reservoir, porosity, gas saturation, abnormity, response

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