利用SVD分解法对任意道距道内插  

Any-interval trace interpolation using SVD method

作　　者：陆文凯[1] 李衍达[1] 

机构地区：[1]清华大学自动化系

出　　处：《石油地球物理勘探》1997年第4期582-588,共7页Oil Geophysical Prospecting

摘　　要：传统的道内括技术是采用扫描同相轴的倾角，再沿着若干倾角方向加权求和来实现的。本文提出一种新方法——SVD分解法插值，即失利用图集处理技术检测地震图象上的同相轴的走向，然后沿该方向进行SVD分解，再对分解后的特征向量矩阵按要求进行插值重建，从而得到内插结果的地震剖面。从理论记录和实际资料的处理结果来看，本方法具有速度快、精度高、内括效果好等特点，且可对任意道距剖面进行内插。Usual trace interpolation is achieved by using the dip angles of scanned reflec-tion legs and making weighted summation along some dip angle directions. Any-in-terval trace interpolation using SVD method,a new technique,is put forward,whichincludes the following steps:. Detect the main trend of reflection legs in seismic image by using image pro-cessing technique.. Make SVD analysis along this direction-. Finish the interpolation and reconstruction of the post-SVD characteristicvector matrix according to the requirements to produce a final interpolation section.Viewed from the theoretical and real results,the method has some advantages:fast computation,high accuracy,good interpolation effect and the desirable interpo-lation for sections of any group intervals.

关 键 词：SVD分解 道内插 地震数据处理 

分 类 号：P631.443[天文地球—地质矿产勘探]