摘要
常规的地表一致性处理方法是在得到各个地震道的炮点分量和检波点分量之后,计算两个分量褶积的预测反褶积算子,将该算子作用在各自的地震道上,由此消除激发和接收因素对地震子波的影响。当激发和接收因素变化较大时,由于没有明确的目标函数,其应用效果不甚理想。为此,在利用常规方法实现地震道分解之后,赋予每个地震道相同的目标函数。然后,以炮点分量和检波点分量的褶积为输入函数,利用维纳滤波算子对每个地震道进行地表一致性反褶积处理。实验结果表明,该方法较好地消除了不同地震道之间激发和接收因素的差异,地震子波的一致性得到改善。
The conventional surface-consistent method calculated the prediction deconvolution operators of two component convolutions after seismic traces were decomposed into the components of shot and receiver and,applied to corresponding seismic traces to remove the effects of shooting and receiving factors on wavelets.When the traces were much different in the shooting and receiving factors,the application result was less satisfied due to the lack of definite objective function.Therefore,after the seismic traces were decomposed by conventional method,the same objective function was defined for each trace.Then,the Wiener filtering operator was estimated with the convolutions of shot component and receiver component as input function,and applied to each trace for surface-consistent deconvolution processing.The experimental results indicated that the method could remove much difference of shooting and receiving factors among seismic traces,and the consistency of seismic wavelets was improved.
出处
《山东科技大学学报（自然科学版）》
CAS
2011年第3期27-32,共6页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家重点基础研究发展计划(“973”计划)项目(2007CB209608)
中国石油科技创新基金项目(2010D-5006-0301)
关键词
地表一致性
反褶积
目标函数
地震子波
分解
surface-consistent
deconvolution
objective function
seismic wavelet
decomposition
