摘要
当用不同施工时期采集的地震剖面对同一地区进行综合对比解释时,可能会遇到相交剖面产生闭合差情况。通常这些闭合差是由于激发因素、接收条件的不同,导致交叉点上振幅、时间及相位存在差异造成的,这将给地震资料的综合解释带来不便。因此,随着四维地震技术的推广,做好地震剖面的匹配校正是一件很有意义的工作。这里给出了2D地震测线上各个交点的振幅、时间和相位差匹配校正的原理公式,利用迭代最小平方算法,通过模型试算,详细阐述匹配流程并进行了效果分析。
The seismic profile mis-ties at the intersections may be involved with amplitude gaining,time shifting,or phase rotation.And they are also caused by different conditions of data acquisition and data processing.With the development of 4D seismic technique,the mis-tie correction is an important task since the mis-ties make comprehensive interpretation inaccurate.In this paper,we firstly describe the theory and algorithms to compute seismic amplitudes,time and phase differences at each intersection point,then give some mis-tie correction results through synthetic and real seismic data.The results show that the presented mis-tie correction methods are correct and efficient.
出处
《物探化探计算技术》
CAS
CSCD
2008年第1期17-21,共5页
Computing Techniques For Geophysical and Geochemical Exploration
基金
中国石油大学研究生创新项目(S2006-04)
关键词
闭合差
校正
振幅
相位旋转
时移
交点
mis-tie
correction
amplitude
phase rotation
time shifting
intersection
