摘要
胜利油田垦71地区多分量地震数据采用微型机电系统(MEMS)数字检波器采集。受转换波非对称路径和各向异性的影响,剖面中非双曲同相轴广泛存在。传统的速度分析基于各向同性理论,动校正时无法把同相轴拉平。本文基于四参数理论,利用不同偏移距的动校正信息估算不同的参数,确保了同相轴的同相叠加。该方法在垦71地区三维多波资料处理中取得了较好的效果。
The multi-component seismic data were acquired by micro-electro mechanical systems （MEMS） in Ken71 area in Shengli Oilfield. The non-hyperbolic events can be seen in sections as the influences of converted-wave asymmetry paths and anisotropy. The events can not be flattened in NMO correction as the traditional velocity analysis is based on isotropy theory. The paper introduces the four parameters velocity analysis. It calculates different parameters by using dynamic correction of different offsets to ensure in-phased stack of the events. A good result was obtained in 3D converted-wave data processing acquired from Ken71 area.
出处
《油气地球物理》
2006年第3期27-31,共5页
Petroleum Geophysics
关键词
转换波
处理
四参数
速度分析
应用
converted-waves, processing, four parameters,velocity analysis and application
