AVO属性技术在含气砂岩储层预测中的应用

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英文篇名：Application of AVO attribute technology in the prediction of gas-bearing sandstone 中文刊名：复杂油气藏 英文刊名：Complex Hydrocarbon Reservoirs 作者：骆璞 ; 王显 ; 姜传芳 英文作者：Luo Pu ; Wang Xian ; Jiang Chuanfang ; Geological Scientific Reserch Institute of Jiangsu Oilfield Company ; SINOPEC 中文关键词：AVO ; 地震属性 ; 正演模拟 ; 流体替换 ; 砂岩 ; 储层预测 英文关键词：AVO ; seismic attribute ; PG attribute ; forward modeling ; fluid replacement ; sandstone ; reservoir prediction 出版日期：2014-12-25 机构：中国石化江苏油田分公司地质科学研究院; 年：2014 期：04 出版单位：复杂油气藏

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 characteristics of gas- bearing reservoir were obtained by AVO forword modeling and fluid replacement. And the AVO analysis results 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.

引文

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