Super-resolution least-squares prestack Kirchhoff depth migration using the L-0-norm
文献类型：期刊论文
| 作者 | Wu Shao-Jiang1,2; Wang Yi-Bo1; Ma Yue3; Chang Xu2 |
| 刊名 | APPLIED GEOPHYSICS
 |
| 出版日期 | 2018-03-01 |
| 卷号 | 15期号:1页码:69-77 |
| ISSN号 | 1672-7975 |
| 关键词 | super-resolution least-squares Kirchhoff depth migration L-0-norm regularization |
| DOI | 10.1007/s11770-018-0654-0 |
| 文献子类 | Article |
| 英文摘要 | Least-squares migration (LSM) is applied to image subsurface structures and lithology by minimizing the objective function of the observed seismic and reverse-time migration residual data of various underground reflectivity models. LSM reduces the migration artifacts, enhances the spatial resolution of the migrated images, and yields a more accurate subsurface reflectivity distribution than that of standard migration. The introduction of regularization constraints effectively improves the stability of the least-squares offset. The commonly used regularization terms are based on the L-2-norm, which smooths the migration results, e.g., by smearing the reflectivities, while providing stability. However, in exploration geophysics, reflection structures based on velocity and density are generally observed to be discontinuous in depth, illustrating sparse reflectance. To obtain a sparse migration profile, we propose the super-resolution least-squares Kirchhoff prestack depth migration by solving the L-0-norm-constrained optimization problem. Additionally, we introduce a two-stage iterative soft and hard thresholding algorithm to retrieve the super-resolution reflectivity distribution. Further, the proposed algorithm is applied to complex synthetic data. Furthermore, the sensitivity of the proposed algorithm to noise and the dominant frequency of the source wavelet was evaluated. Finally, we conclude that the proposed method improves the spatial resolution and achieves impulse-like reflectivity distribution and can be applied to structural interpretations and complex subsurface imaging. |
| WOS关键词 | REVERSE-TIME MIGRATION ; REFLECTION DATA ; INVERSION ; CONSTRAINT |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000431917800007 |
| 资助机构 | Saudi Aramco ; Saudi Aramco ; Saudi Aramco ; Saudi Aramco ; Saudi Aramco ; Saudi Aramco ; Saudi Aramco ; Saudi Aramco |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/88304]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 通讯作者 | Wang Yi-Bo |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Aramco China, Beijing Res Ctr, Beijing 100102, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu Shao-Jiang,Wang Yi-Bo,Ma Yue,et al. Super-resolution least-squares prestack Kirchhoff depth migration using the L-0-norm[J]. APPLIED GEOPHYSICS,2018,15(1):69-77. |
| APA | Wu Shao-Jiang,Wang Yi-Bo,Ma Yue,&Chang Xu.(2018).Super-resolution least-squares prestack Kirchhoff depth migration using the L-0-norm.APPLIED GEOPHYSICS,15(1),69-77. |
| MLA | Wu Shao-Jiang,et al."Super-resolution least-squares prestack Kirchhoff depth migration using the L-0-norm".APPLIED GEOPHYSICS 15.1(2018):69-77. |
入库方式： OAI收割
来源：地质与地球物理研究所
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