A non-linear regularized constrained impedance inversion
文献类型：期刊论文
| 作者 | Zhang, Hongbing; Shang, Zuoping; Yang, Changchun |
| 刊名 | GEOPHYSICAL PROSPECTING
 |
| 出版日期 | 2007-11-01 |
| 卷号 | 55期号:6页码:819-833 |
| ISSN号 | 0016-8025 |
| DOI | 10.1111/j.1365-2478.2007.00637.x |
| 文献子类 | Article |
| 英文摘要 | Inversion for seismic impedance is an inherently complicated problem. It is ill-posed and band-limited. Thus the inversion results are non-unique and the process is unstable. Combining regularization with constraints using sonic and density log data can help to reduce these problems. To achieve this, we developed an inversion method by constructing a new objective function, including edge-preserving regularization and a soft constraint based on a Markov random field. The method includes the selection of proper initial values of the regularization parameters by a statistical method, and it adaptively adjusts the regularization parameters by the maximum likelihood method in a fast simulated-annealing procedure to improve the inversion result and the convergence speed. Moreover, the method uses two kinds of regularization parameter: a 'weighting factor' lambda and a 'scaling parameter' delta. We tested the method on both synthetic and field data examples. Tests on 2D synthetic data indicate that the inversion results, especially the aspects of the discontinuity, are significantly different for different regularization functions. The initial values of the regularization parameters are either too large or too small to avoid either an unstable or an over-smoothed result, and they affect the convergence speed. When selecting the initial values of lambda, the type of the regularization function should be considered. The results obtained by constant regularization parameters are smoother than those obtained by adaptively adjusting the regularization parameters. The inversion results of the field data provide more detailed information about the layers, and they match the impedance curves calculated from the well logs at the three wells, over most portions of the curves. |
| WOS关键词 | SEISMIC DATA ; VELOCITY ESTIMATION ; TOMOGRAPHY ; OPTIMIZATION ; SEISMOGRAMS ; RECOVERY ; OFFSET ; MODEL |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000249824800005 |
| 出版者 | BLACKWELL PUBLISHING |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/67636]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhang, Hongbing |
| 作者单位 | 1.Hohai Univ, Geol & Engn Dept, Nanjing 210098, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Hongbing,Shang, Zuoping,Yang, Changchun. A non-linear regularized constrained impedance inversion[J]. GEOPHYSICAL PROSPECTING,2007,55(6):819-833. |
| APA | Zhang, Hongbing,Shang, Zuoping,&Yang, Changchun.(2007).A non-linear regularized constrained impedance inversion.GEOPHYSICAL PROSPECTING,55(6),819-833. |
| MLA | Zhang, Hongbing,et al."A non-linear regularized constrained impedance inversion".GEOPHYSICAL PROSPECTING 55.6(2007):819-833. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。