摘要
三维地震资料叠后提高信噪比和横测线方向道内插问题，目前在生产中还没有得到很好的解决。现在有些数据中心是用二维多项式拟合提高信噪比模块对纵测线和横测线分两步进行处理的。本文应用多项式拟合理论直接在三维叠后地震资料上完成提高信噪比和横测线方向的道内插（通常横测线方向的道间距要比纵测线方向的道间距大一倍，需要进行道内插），用一步处理即可得到能应用于三维偏移的共深度点数据集。此法充分利用了三维地震资料的信息，提高了处理效率。
Both the signal/noise ratto improvement of stacked 3-D seismic data and the trace interpolation of cross line have not been nicely achieved yet in present practice. Some data processing centers process in-line and cross-line seismic data respectively in different steps by 2-D polynomial fitting module for signal/noise ratio improvement. With polynomial fitting theory, we simultaneously finish both signal/noise ratio improvement and cross-line trace interpolation of stacked 3-D seismic data(here trace interpolation is necessary because its group interval is two times that of in-line. ). Single-step processing can bring CDP seismic data for 3-D migration.This method makes full use of 3-D seismic informations,thus improving data processing efficiency.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
1994年第2期208-212,共5页
Oil Geophysical Prospecting
关键词
地震数据处理
信噪比
道内插
叠加
3-D seismic data processing,full three dimensions,signal/noise ratio,trace interpolation,polynomial fitting
