三谱地震子波估计中三维窗函数的应用  

The application of 3D window to seismic wavelet estimation based on trispectrum

作　　者：袁子龙[1] 李海山[1] 刘洪林[1] 周洪昌[1] 

机构地区：[1]大庆石油学院地球科学学院,黑龙江大庆163318

出　　处：《大庆石油学院学报》2010年第1期18-23,28,共7页Journal of Daqing Petroleum Institute

基　　金：黑龙江省自然科学基金项目(E0317);黑龙江省科技攻关项目(GZ05A102)

摘　　要：无需对子波作任何假设,直接从地震记录的三谱中恢复地震子波的相位谱,进而重构地震子波.针对利用地震记录的四阶累积量估计地震子波的四阶累积量时受多种因素影响的问题,构造了三维窗函数来消除干扰,提高了估计子波的可靠性和精度.理论模型和实际资料处理验证了方法的正确性和有效性.The seismic wavelet phase spectrum has been recovered from the trispectrum of seismic data directly without any assumptions,and then the seismic wavelet has been reconstructed.In order to eliminate the influence of various factors on estimating the four-order cumulants of the seismic wavelet from the four-order cumulants of the seismic data,a three-dimensional window is constructed to remove the interference,and improve the reliability and accuracy in estimating wavelet.The correctness and validity of this approach are verified by processing the theoretical model and the actual data.

关 键 词：四阶累计量 双谱 三谱 地震子波提取 三维窗函数 

分 类 号：P631.4[天文地球—地质矿产勘探]