摘要
简要介绍了波动方程叠前深度偏移技术的发展趋势,讨论了P道集波动方程速度分析技术,给出了共方位角波动方程叠前深度偏移方法的计算公式。利用以上技术和方法,借助国产神威Ⅰ型机,完成了CB30地区130km^2的三维地震资料的叠前深度偏移,实现了共方位角波动方程偏移算子的并行运算,并行效率达到98%以上。偏移结果表明,此方法能有效地改善地震数据的成像精度,适用于构造复杂地区。
This paper briefly introduces the developing trend of wave equation prestack depth migration technolo-
gy, discuses P-gather wave equation velocity analysis technology, and presents the formula of common-azimuth
wave equation prestack depth migration methed.On super computer Shenwei 1, we realized common-azimuth
wave equation prestack depth migration on 130km^2 3-D seismic data. The migrated results verified the correctness
of the method, and showed the usefulness of the method in imaging complex structures.
出处
《勘探地球物理进展》
2004年第3期213-217,231,共6页
Progress in Exploration Geophysics
