摘要
本文采用时间层分裂法实现三维一步法全倾角波动方程有限差分偏移。该方法对速度和构造走向及倾角都无特殊限制。文中阐述了差分方程理论及实现方法，并对山区三维、煤田三维以及海陆交互区三维地需数据进行了处理。结果表明，本方法的偏移成像剖面比两步法偏移成像剖面分辨率高、界面归位合理、断点清楚，取得了明显的效果。
One-pass all-dip 3D migrati0n using finite difference of wave equation can be achieved through time horizon splitting. No special limitation of velocity,structural trend and dip is needed in the technique. The paper details theory of difference equation and performance of the technique. The technique has been used to process the 3-D seismic data from hilly area,coal field and beach. It is shown that the migrated section produced by this technique has higher resolution,more reasonable interface position and clearer fault points than two-pass migrated section,resulting in satisfactory effect.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
1995年第4期465-472,共8页
Oil Geophysical Prospecting
关键词
地震数据处理
三维地震
偏移成像
地震勘探
seismic data processing, 3-D seismology, wave equation, difference method, one-pass method, migration
