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。
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.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2007年第1期122-124,共3页
Xinjiang Petroleum Geology
基金
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
关键词
气藏
孔隙度
含气饱和度
异常
响应
gas reservoir
porosity
gas saturation
abnormity
response
