论文详情

用AVO方法从定性到半定量检测砂岩含气性

断块油气田

2005年 12卷第01期

阅读：105

Title

Detect the Gas Bearing Propertics of Sandstone
Using AVO Method—from Qualitatively Interpretation
to Ha lf-quantitatively In terpertation

作者

贺保卫¹ 潘仁芳² 莫午零² 刘亚明²

单位

东方地球物理公司研究院敦煌分院长江大学地球科学学院

摘要

　介质的孔隙度、含气饱和度等是影响地震波振幅随炮检距变化的重要因素。在已知含气饱和度和泊松比变化关系的基础上,应用Wyllie公式,对不同孔隙度情况下的砂岩介质做变含气饱和度正演模型研究,并通过P、G交会图分析它们的AVO响应特征,使以往的AVO定性解释变为半定量化,从而更好地为AVO反演服务。

Abstract

The Porosity and fluid saturate are the singificant factors

that effect on amp litude variation with offset of seismic wave

in the medium. Based on the kmown relationship of the

Poisson ratio and gas saturate, we imitate different fluid

saturation AVO models in sandstone which has different

porosity usingWyllie formula and analyze those parameters to

know how they affect AVO attributive parameter using P、G

cross p lot in this paper , which change AVO qualitatively

interp retation to half quantiatively in order to give better

service forAVO interpertation .

关键词：

AVO; 孔隙度; 含气饱和度; 正演模型;

Keywords:

AVO , Porosity, Fluid saturate, Forward

model.

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基金项目

DOI