物探化探计算技术2025，Vol.47Issue(2)：159-168,10.DOI:10.12474/wthtjs.20240110-0001
L1范数约束的快速多道叠前反演
Fast multichannel pre-stack inversion constrained by L1 norm
秦思萍 1贺锡雷 2谌洪平 2张陈强 1张雨强 2雷扬 3陈明春3
作者信息
- 1. 成都理工大学地球物理学院,成都 610059||中石化石油工程地球物理有限公司南方分公司,成都 610041
- 2. 成都理工大学地球物理学院,成都 610059
- 3. 中石化石油工程地球物理有限公司南方分公司,成都 610041
- 折叠
摘要
Abstract
Pre-stack inversion plays an important role in obtaining reservoir elastic parameters and predicting oil and gas reservoirs.The traditional pre-stack inversion neglects the correlation between adjacent channels,In contrast,the multi-channel pre-stack inversion method fully considers the correlation between channels and enhances the horizontal continuity of inversion results.The existing multi-channel inversion algorithms tend to rearrange all seismic data into a column for inversion,which occupies a large amount of computer memory and requires a large amount of computation.Based on the strong sparsity of the seismic reflection coefficient,this paper introduces multi-channel pre-stack elastic inversion using the total variational regularization technique,which has higher accuracy and better noise resistance than the ordinary sparse regularization method.It uses the total variational regularization objective function based on L1 norm constraint to constrain the inversion parameters horizontally and horizontally,which avoids the rearrangement of seismic tracks and improves computational efficiency and inversion accuracy.It also reduces the memory requirements.The correctness and reliability of the proposed method are verified by the analysis of inversion accuracy,transverse continuity and anti-noise ability through theoretical model tests and practical application.关键词
叠前反演/稀疏正则化/L1范数/全变分正则化/多道反演Key words
prestack inversion/sparse regularization/L1 norm/total variational regularization/multichannel inversion分类
地质学引用本文复制引用
秦思萍,贺锡雷,谌洪平,张陈强,张雨强,雷扬,陈明春..L1范数约束的快速多道叠前反演[J].物探化探计算技术,2025,47(2):159-168,10.
