A 3-D curved-surface fitting and stacking method in time-space domain using compound orthogonal polynomial
HE Xu-li1,2, LIU Su-qin1, TONG Zhao-qi1
1 College of Computer Science and Communication Engineering,China University of Petroleum,Qingdao,Shandong,266555,China;
2 College of Earth Resources and Information,China University of Petroleum,Qingdao,Shandong,266555,China
Abstract：Polynomial fitting can increase signal-to-noise ratio without damaging resolution.But the method can only be used in processing 2-D seismic data.In this paper,a 3-D curved-surface fitting and stacking method is introduced.It can separate and compound linearity fitting,hyperbola fitting and flexure fitting using decomposability of 3-D compound orthogonal polynomial.A 3-D seismic dataset is processed in offset domain by this method.High quality section is obtained.Processing results prove that the method can improve signal-to-noise ratio and resolution effectively.
