【摘要】 在采集的地震资料中,存在各种噪声,现有的去噪软件对某些噪声消除的同时,对有效信号也有一定的压制。本文采用射线理论的非递推Kirchhoff积分法,研究了针对低信噪比的单炮地震记录的反偏移技术。它可以增强有效信号,消弱随机噪声,提高地震资料的信噪比。实际地震资料处理结果表明,单炮记录信噪比明显提高,速度谱质量得到改善,叠加剖面效果明显。更多还原

【Abstract】 There are various noise in the seismic data.Many methods available nowadays suppress the effective signal while eliminating some noise.The paper puts forword a demigration technique which aims at the low S/N ratio shot seismic recorders.It adopts non-recursion KIRCHHOFF integral method based on ray theory,which can enhance the effective signal,attenuate the random noise improve the S/N ratio of seismic data. The results show that the S/N ratio of shot recorders is increased,the quality of velocity spectrum is improved and the effect of stacked section is obvious better.更多还原