【摘要】 通过求解基于点震源的完全弹性和粘弹性波动方程获取地震波场完全解(包括了一次反射波、多次反射波和转换波信息),有效消除了高阻抗条件和临界角条件下基于射线追踪计算反射系数的误差。利用该方法研究了薄层厚度、层间多次波和衰减等因素对薄互层油气藏地震AVO变化规律的影响,其结论与认识可为利用地震AVO进行薄互层油气藏识别提供理论依据。更多还原

【Abstract】 The whole solutions of seismic wave field(including primary wave,multiple reflected wave and converted wave) can be obtained through solving the equations of full elastic and viscoelastic waves based on a point source,which effectively eliminates the reflection coefficient error from ray-traceing calculation under a high impedance and the critical angle.This method has been used to probe into the impacts of several factors such as thin bed thickness,interbed multiples and attenuation on AVO patterns in thin-interbedded reservoirs,the results and conceptions from which can provide a theoretical evidence for recognizing thin-interbedded reservoirs by seismic AVO.更多还原