地震资料连片静校正方法的实现方法

为了落实地质格架构造的特征,建立井震统一的等时层序结构。很多探区陆续开展了多区块的连片地震资料处理,而且连片块数越来越多,面积越来越大。由于连片处理涉及的各区块,所以往往信噪比、分辨率、波形特征等因素差异较大,增加了处理难度,特别是连片静校正技术制约着连片处理的效果。通过对影响连片静校正因素的分析,这里提出了进行连片静校正计算的四种方法,在实际应用中均取得了良好效果。同时也指出了连片静校正所产生的弊端和引起的误差。正确认识连片静校正所带来的利弊,能够更好地避免构造解释或寻找圈闭带来的失误。

THE IMPLEMENTATION OF THE METHOD OF SEISMIC DATA STATICS CORRECTION FOR MERGING SURVEYS

For the purpose of finding out geologic features of structure framework and establishing uniform well-seismic sequences of same ages,multi-surveys merging seismic data processing has been carried out in many exploration areas.With more and more surveys being merged and the area of processing becoming larger and larger,because the difference between different surveys in signal-noise ratio,resolution and waveform characteristic is large,so it is difficult to carry out data processing.Especially the techniques of contiguous statics correction are key factor to affect the processing results.In this paper,through the analysis of the factors to affect contiguous statics results,four methods to calculate contiguous statics are proposed.The methods have achieved good results in real data processing.The abuse and errors caused by contiguous statics also are pointed out.Correct understanding of the advantages and disadvantages about contiguous statics,Mistakes in structural interpretation and search for traps can be avoided.