3-D rapid ray-tracing and Gaussian ray-beam forward simulation
Deng Fei, Liu Chao-ying
1. Post-Doctor Work Station of BGP,Zhuozhou City,Hebei Province,072751,China;
2. College of Information and Engineering,Chengdu University of Technology,Chengdu City,Sichuan Province,610059,China;
3.BGP,Zhuozhou City,Hebei Province,072751,China
Abstract：The ray forward simulation pays important role on seismic exploration in complex area,but along with the complexity of field prospecting condition,the 3-D geologic model becomes more complexity and conventional ray forward simulation is not able to meet the need of practical production in both precision and speed.In order to solve the issue of seismic numeric simulation for 3-D complex medium,the paper studied rapid ray tracing and Gaussian ray-beam forward simulation for 3-D clumpy geologic model.Different from common ray forward simulation,the method closely combines the wave equation with ray theory,gets ray trajectory by kinematical ray-tracing and distribution of high-frequency energy around central ray by dynamic ray-tracing,which reflects the feature of waves in both dynamics and kinematics and is characteristics of both rapid operational speed and high precision,which is able to effectively solve the issue of forward simulation for 3D complex medium.
