节点仪采集地震数据现场处理监控方法探讨——以CLFCZ三维工区为例

Discussion on field processing and monitoring of seismic data collected by a nodal seismic acquisition system: a case study in CLFCZ3D work area

因节点仪使用方式便捷且高效,使其在野外地震采集中的使用越来越普遍。但在方便了野外生产的同时,也增加了很多室内工作量,如节点数据的下载、切分和组合等。节点仪地震数据既不能像常规的有线接收方式那样,可以随时查看和监控,在数据下载、处理之后,也会在短期内积累大量的地震数据,对数据检查的时效性提出了较高的要求。利用现场处理方法可以对节点仪数据的炮检点位置和观测系统的正确性进行快速、高效检查,确保节点仪数据的切分和组合过程正确无误,为后续地震资料处理提供可靠的原始地震数据。

Nodal seismic acquisition systems have become increasingly common owing to their convenience and efficiency.These systems facilitate field production at the expenses of an increased workload related to node data download,cutting,and combination.Different from the conventional wire-based acquisition methods,nodal seismic data cannot be viewed and monitored at any time.After data download and processing,a large amount of seismic data is stored for a defined period.High-speed access to the data is essential for inspection.The on-site processing method can be used to verify the position of the source and detection points and the observation geometry of the nodal data quickly and efficiently,so as to ensure correct data cutting and combination,and provide reliable original seismic data for subsequent seismic data processing.