AVO地震反演在油气预测中的应用  

Application of AVO seismic inversion in hydrocarbon prediction

作　　者：方赟[1] 柯善珍[2] 陈家敏[1] 刘敬[1] 

机构地区：[1]中油辽河油田分公司勘探开发研究院,辽宁盘锦124010 [2]中石化中原油田分公司信息中心,河南濮阳473000

出　　处：《特种油气藏》2002年第4期22-24,共3页Special Oil & Gas Reservoirs

摘　　要：利用AVO分析和地震反演相结合的三维多道全局优化地震反演技术和方法进行叠前反演。结果得到纵横波波阻抗、纵横波速度比、泊松比等相关数据 ;结合岩性贡献概率量板 ,最终得到岩性数据体。将其用于岩性预测和地下含油气信息检测后效果良好。由此认为 :本方法能处理各种道集数据 。Prestack inversion is performed by combining AVO analysis and seismic inversion which are three dimensional, multi traces, and full scale optimized. Relevant data such as P wave and S wave impedance, velocity ratio of compressional to shear wave, and Poisson's ratio can be obtained. Combining with lithologic contribution probability chart, lithologic data can be obtained. It has shown good result after being used for lithology prediction and in situ hydrocarbon detection. Hence it is thought that this method can process various trace gather, is a new fluid and lithology prediction method.

关 键 词：AVO地震反演 油气预测 应用 全局优化 角度叠加 截距梯度 低频模型 门槛值 

分 类 号：P618.13[天文地球—矿床学] P631.443[天文地球—地质学]