长岭断陷地震资料处理方法

On Seismic Data Processing Method in Changling Fault Depression

针对长岭断陷地震资料存在的静校正、噪声压制、分辨率低三大问题,对资料特点进行分析,首先用折射静校正技术解决了野外静校正问题,然后根据资料影响程度及处理进程逐步完善各类噪声的压制和地震道间的一致性处理,通过精细速度分析和迭代剩余静校正进行反射波的同相叠加,最后在此基础上提高了资料的分辨率和信噪比,使得目的层的成像效果得到了较为明显的改善。

Aiming at statics correction, noise suppression and low resolution existing in seismic data of Changling depression, refraction statics correction technology is used to treat field statics correction on the basis of analysis of data features. All kinds of noise suppression and interseismic consensus processing are improved gradually according to data effect degree and its processing course. In--phase stack of reflected wave is done through fine velocity analysis and residual static correction iteration. On the basis of above means, the data resolution and SNR are increased, im- proving target layers imaging effects.