弯线倾斜迭加方法研究

A STUDY OF SIALOM LINE STACKING TECHNIQUE FOR DIPPING HORIZONS

成都地质学院

Chengdu Geological College

为解决界面倾斜和其它原因对弯线迭加质量的影响,提出弯线倾斜迭加方法。讨论了消除界面倾斜影响的弯线正常时差公式,提出综合利用波的振幅、相位和周期特征的波形迭加方法,从而改进了弯线共面无道集迭加和横向道集扫描迭加质量。横向波形扫描迭加试算结果证明,弯线倾斜迭加方法抗干扰能力强,有利于突出有效波,特别是弱波,是一个有希望的方法。

To eliminate the effect caused by dip and other factors on quality of slalom line stacking results, a slalom line stacking technique for dipping horizons is suggested in this paper. A slalom line normal moveout formula which considers the effect of dip is presented. A comprehensive stacking technique utilizing the amplitude, phase and period of seismic waves is discussed. The techniques of common surface element gather stack and the lateral scanned stack have been improved. By computation the results of the lateral scanned wave form stack have shown that the slalom line stacking technique for dipping horizons has high immunity of noise and is favourable for distinguishing weak events and it could be a hopeful approach.