AVO属性技术在含气砂岩储层预测中的应用  

Application of AVO attribute technology in the prediction of gas-bearing sandstone

作　　者：骆璞[1] 王显[1] 姜传芳[1] 

机构地区：[1]中国石化江苏油田分公司地质科学研究院,江苏扬州225009

出　　处：《复杂油气藏》2014年第4期32-34,56,共4页Complex Hydrocarbon Reservoirs

基　　金：中国石油化工股份有限公司(P12034);江苏油田分公司(JS12048)

摘　　要：为预测盐城凹陷含气砂岩的分布范围,利用AVO正演模拟和流体替换等工作取得本地区含气储层的AVO响应特征,并通过该地区关键产气井实际地震资料的AVO分析结果进行验证,再以Zoeppritz方程的Shuey近似表达式为基础,计算出P(截距)和G(梯度)等AVO属性,并通过PG属性进行含气储层的识别,刻画出该区含气砂岩横向和纵向展布特征,结果与实际情况相符。To predict the distribution range of gas-bearing sandstone in Yancheng Sag,the AVO responding character-istics of gas-bearing reservoir were obtained by AVO forword modeling and fluid replacement.And the AVO analysis re-sults of the actual seismic data from the key gas producing wells were verified.Based on the Shuey approximate expression for the Zoeppritz equation,it was calculated that AVO attributes including P （ intercept） ,G （ gradient） ,and so on.Finally, based on identification of gas reservoirs by PG attribute,the lateral and longitudinal distribution characteristics of the gas-bearing sandstone were described in this area.

关 键 词：地震属性 正演模拟 流体替换 砂岩 储层预测 

分 类 号：P631.4[天文地球—地质矿产勘探]