针对目标的方位保真局部角度域成像方法

Azimuth-preserved local angle domain imaging for objects

本文基于对地震波局部方向特征的分析,讨论了适用于各向同性与各向异性介质的方位保真局部角度域叠前偏移成像原理及其应用方法。理论模型合成数据与实际资料试验展示了该方法的特点与优势,以及在复杂地质体多视角描述、AVA分析/反演、方位各向异性分析等方面的应用潜力。随着多方位或宽方位地震采集技术的广泛应用以及高性能计算技术与平台的飞速发展,方位保真局部角度域成像技术预计将在储层成像与油气预测领域发挥重要作用。

Based on the analysis of the local directional characteristics of seismic waves,we discuss the methodology and applications of azimuth-preserved local angle domain prestack migration for isotropic and anisotropic media.Synthetic and real data examples show the properties and advantages of this seismic imaging approach,and also demonstrate its potential for several applications,such as delineation of the complex geological bodies with multiple angle of view,amplitude variations with incident-angle(AVA) analysis and inversion,azimuthal anisotropy analysis,etc.As multiple azimuth or wide azimuth acquisition are more widely used and the high-performance computer technology is quickly developed,we predict that azimuth-preserved local angle domain imaging approach will play an important role for imaging reservoirs and oil and gas prediction.