焉耆盆地低信噪比地震资料处理方法

Processing method study for low S/N seismic data from Yanqi Basin

中国石化河南石油勘探开发研究院,河南南阳 473132

Geologic Research Institute, Nanyang Oilfield, Henan 473132, China

焉耆盆地地震地质条件复杂,地震资料信噪比低,不能很好的用于地质解释。针对这一问题,探讨了交互迭代静校正、干扰波压制、地表一致性振幅处理、子波归一化、优化迭代叠加及叠后f-x域预测去噪技术等处理方法,建立了一套适合于该地区地震资料特点的处理流程。将此流程应用于实际资料处理,剖面品质得到了较大的改善,信噪比明显提高。

Because of the complicated seismic and geologic conditions, seismic data acquired from Yanqi Basin are low in S/N, impeding the geologic interpretation to carry out. A data processing flow is established by trial and error, which includes interactive iterated statics, noise suppression, surface consistent amplitude processing, wavelet normalization, iterated optimal stacking, and prediction filtering in poststack f-x domain. Practices demonstrate the feasibility of the flow. The S/N of resulted data is improved greatly.