一种可靠的强噪声三分量微地震数据初至拾取方法

程一鸣, 李怀良, 庹先国, 王耀彬, 王亚娟, 沈统

A reliable first arrival picking method for high-noise three component microseismic data

Yi-Ming CHENG, Huai-Liang LI, Xian-Guo TUO, Yao-Bin WANG, Ya-Juan WANG, Tong SHEN

图2 使用合成微地震数据的小波多尺度分解和重构波形 a—原始数据和分解数据集;b—原始数据和重构数据集;随机噪声占80%,P波主频为100 Hz,采样间隔为0.25 ms,分解级别为3,母小波为db10

Fig.2 Wavelat multilevel decomposition and reconstruction waveforms using synthetic microseismic data a—original data and decomposition datasets;b—original data and reconsruction datasets;random noise account for 80%,principal frequency of P-wave is 100 Hz,sample interval is 0.25 ms,decomposition level is 3,mother wavelet is the db10