阻尼LSQR算法在多波地震反演中的应用  

The Application of Damped LSQR Algorithm in the Multi-wave Seismic Inversion

作　　者：孟祥宁[1] 钟峙[2] 王玉凤[1] 

机构地区：[1]成都理工大学信息工程学院地球探测与信息技术教育部重点实验室,四川成都610059 [2]广州海洋地质调查局,广东广州510075

出　　处：《中国西部科技》2012年第1期33-34,共2页Science and Technology of West China

摘　　要：多波VTI介质AVA储层参数联合反演的关键是解Jacobi矩阵。本文从Lanczos迭代出发,结合双对角化和QR分解,推导出了阻尼Lanczos算法流程。通过比较SVD算法和LSQR算法,显示了阻尼Lanczos算法在效率和精度方面的优越性。该算法应用于多波地震勘探资料反演中,获得的目标层储层参数:纵波速度、横波速度和密度,证明了该算法的有效性。The key of the joint inversion of reservoir parameters for the Multi-wave VTI media AVA is the solution of the Jacobi matrix.This paper based on the Lanczos iteration,deduced Lanczos algorithm flow damping by combining double diagonalization and QR decomposition.Compared with SVD algorithm and LSQR algorithm,it was showed that the damped Lanczos algorithm was superior in its efficiency and accuracy.Then,we applied this algorithm to the Multi-wave seismic data inversion to prove the effectiveness of the algorithm.

关 键 词：AVA 阻尼 地震勘探 反演 

分 类 号：P631.429[天文地球—地质矿产勘探]