地震数据分频处理技术及其在煤田勘探中的应用

Frequency-divisional seismic data processing and its application in coalfield prospecting

针对煤田地震勘探中当地震数据采集质量不高,信噪比及分辨率不高,常用的处理方法又不能达到有效的改善,影响地震资料解释精度的问题,以河南荥阳某煤矿三维地震资料为依托,开展了地震资料的分频处理研究。对勘探区的地震数据采用能量扫描以及频谱分析的方法,确定了地震资料的频带范围,并划分频带。分别在不同频带内进行精细化处理,再将各频带的地震反射波能量做叠加,达到了提高资料分辨率的目的。提高了煤田地震勘探小构造解释分辨的精度,对地震资料解释有很大的帮助。

For signal-to-noise ratio of the seismic data and resolution of the seismic data was low and the conventional processing effect was not good,affect the interpretation of seismic data accuracy,Based on the three-dimensional seismic data of a coal mine in Xingyang,the frequency division processing of seismic data was carried out.The seismic data of the exploration area were processed by energy scanning and spectrum analysis.The frequency range of the seismic data was determined and the frequency band was divided.In different bands within the fine processing,and then the band of seismic reflection wave energy to do superposition,to improve the resolution of the purpose of the data.Which can improve the accuracy of small structure interpretation and interpretation of coal mine seismic exploration.It is helpful to explain the interpretation of seismic data.