摘要
共反射面元(Common Reflection Surface,CRS)叠加算子包含多个属性参数,具体实现时常采用多级优化策略,然而传统的参数搜索算法并未考虑叠加剖面中同一目标成像点处存在多个有贡献同相轴的情况。针对传统算法的局限性改进参数搜索策略,通过引入相干阈值方法求得目标点处的全局和局部最大值,有效解决了零偏移距剖面中同相轴相交的问题。模型试算和实际资料处理结果表明,与传统的共反射面元叠加方法相比,改进的共反射面元叠加方法考虑了同相轴相交的情况,模拟的零偏移距剖面更加真实可靠,成像效果更好。
The common reflection surface stacking operator consists of multi attribute parameters and the multilevel optimization strategy is often applied during the practical stacking.However,the classical parameter searching algorithm does not consider the situation of several events contributing to the same ZO location in the stacking section.We improve the strategy of searching parameters to overcome the limitations of classic algorithms.The coherence threshold is introduced to obtain the global and local maximum for the target imaging point,which effectively resolves the situation of several events intersecting in the same ZO location.Model test and practical data processing indicates that the improved CRS stacking sections has better imaging results than the conventional CRS stacking sections.
出处
《石油物探》
EI
CSCD
北大核心
2014年第3期287-293,323,共8页
Geophysical Prospecting For Petroleum
关键词
共反射面元(CRS)叠加
参数搜索
相干阈值
相交同相轴
多级优化
common reflection surface （CRS） stack
parameter searching
coherence threshold
intersecting events
multi-level optimization
作者简介
邓金华（1966-）,女,工程师,主要从事地震资料处理及研究工作.
通讯作者：李栋（1984-）,男,博士,主要从事偏移成像和多参数叠加方面的研究工作.
