【摘要】 叠前地震反演克服了叠后地震反演储层信息量的不足,具有良好的保真性和多信息性,可提高储层的描述精度。本文针对涠西南凹陷古近系地层多物源湖相沉积,储层纵、横向变化大,开展叠前弹性反演研究,采取叠前保幅处理技术、岩石地球物理分析技术、高分辨率储层预测技术以及AVO属性分析技术,预测了砂层组的横向发育特征,比较可靠地揭示出地下储层的展布情况和油气状况。更多还原

【Abstract】 The pre-stack seismic inversion can get more information of the reservoir and improve precise of reservoir characterization than the post- stack seismic inversion.Considering the geology and deposition traits of WeiXinan sag,with some techniques,such as pre-stack holding-amplitude process,rock -geophysics analysis,high resolution reservoir prediction and AVO attribute analysis,the method of pre-stack elastic inversion is adopted.The sand body and reservoir distribution characters are pre-cleared更多还原