复杂山区地震勘探实践

Seismic Prospecting Practice in Topographic Relief Mountainous Regions

山区地形复杂,浅层地震地质条件较差,采集工作难度大,地震记录信噪比低,静校正问题突出。通过对复杂山区的表层、浅层、深层条件进行分析,采取了封孔、改良激发岩性、优化传播路径等特殊采集手段,并利用射线追踪方法及时调整观测系统,在此基础上对地震记录进行一些有针对性资料处理技术。分析勘探成果,证明所采用的野外采集措施和资料处理方法是行之有效的。

In the topographic relief mountainous regions, there are poor shallow seismic-geologic conditions, difficult data acquisition, low signal to noise ratio of seismic record and protruding static correction problems. Through analyses of surface layer, shallow and deep seismic-geologic conditions in topographic relief mountainous regions, to take specific collection means of sealing of hole, improving shot location lithology, optimizing propagation path, and use ray tracing to adjust field setup in due course of time, on this basis carry out some pertinent seismic recording data processing techniques. After analyzed prospecting results, demonstrated our field data collecting and processing methods are tried and true.