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焉耆盆地地表条件复杂,有山地、沙山、戈璧、沼泽、湖区和农田等,地震资料年度跨度大,地震激发类型不一致(地表变化、岩性、井炮、震源等),地表高程变化大,静校正问题严重,原始资料的信噪比和分辩率都很低。针对这种复杂地表、不同年度、不同激发条件的资料进行的拼接处理,采取建立近地表模型、应用交互折射静校正技术、地表一致性处理技术、子波整形技术及叠前去噪技术等技术的综合分析应用,较好地解决了本地区资料的静校正问题及子波不一致的问题,使处理剖面的信噪比和分辩率都有较大的改善。
The surface conditions of Yanqi Basin are complex, with mountain, sand hill, Gebi, marsh, lake and farmland etc. The seismic data have a large annual span, different types of seismic excitation (surface changes, lithology, well guns and seismic sources) , The problem of static correction is serious, and the SNR and resolution of the original data are very low. According to the splicing processing of such complex surface, different year and different excitation conditions, the techniques of establishing near-surface model, applying the technology of interactive refraction static correction, surface consistency processing, wavelet shaping and pre-stack denoising Which can better solve the problem of static correction and wavelet inconsistency in the data of the area and greatly improve the signal-noise ratio and resolution of the processing section.