High-resolution imaging: An approach by incorporating stationary-phase implementation into deabsorption prestack time migration
文献类型：期刊论文
| 作者 | Zhang, Jianfeng; Li, Zhengwei; Liu, Linong; Wang, Jin; Xu, Jincheng |
| 刊名 | GEOPHYSICS
 |
| 出版日期 | 2016-09-01 |
| 卷号 | 81期号:5页码:S317-S331 |
| ISSN号 | 0016-8033 |
| DOI | 10.1190/GEO2015-0543.1 |
| 文献子类 | Article |
| 英文摘要 | We have improved the so-called deabsorption prestack time migration (PSTM) by introducing a dip-angle domain stationary-phase implementation. Deabsorption PSTM compensates absorption and dispersion via an actual wave propagation path using effective Q parameters that are obtained during migration. However, noises induced by the compensation degrade the resolution gained and deabsorption PSTM requires more computational effort than conventional PSTM. Our stationary-phase implementation improves deabsorption PSTM through the determination of an optimal migration aperture based on an estimate of the Fresnel zone. This significantly attenuates the noises and reduces the computational cost of 3D deabsorption PSTM. We have estimated the 2D Fresnel zone in terms of two dip angles through building a pair of 1D migrated dip-angle gathers using PSTM. Our stationary-phase QPSTM (deabsorption PSTM) was implemented as a two-stage process. First, we used conventional PSTM to obtain the Fresnel zones. Then, we performed deabsorption PSTM with the Fresnel-zone-based optimized migration aperture. We applied stationary-phase QPSTM to a 3D field data. Comparison with synthetic seismogram generated from well log data validates the resolution enhancements. |
| WOS关键词 | DEPTH MIGRATION ; ANGLE GATHERS ; COMPENSATION ; ABSORPTION ; DISPERSION ; AZIMUTH ; MEDIA ; DIP |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000392752200059 |
| 出版者 | SOC EXPLORATION GEOPHYSICISTS |
| 资助机构 | National Natural Science Fund of China(41330316) ; National Natural Science Fund of China(41330316) ; National Natural Science Fund of China(41330316) ; National Natural Science Fund of China(41330316) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53132]  |
| 专题 | 地质与地球物理研究所_油气资源研究室 |
| 通讯作者 | Zhang, Jianfeng |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Jianfeng,Li, Zhengwei,Liu, Linong,et al. High-resolution imaging: An approach by incorporating stationary-phase implementation into deabsorption prestack time migration[J]. GEOPHYSICS,2016,81(5):S317-S331. |
| APA | Zhang, Jianfeng,Li, Zhengwei,Liu, Linong,Wang, Jin,&Xu, Jincheng.(2016).High-resolution imaging: An approach by incorporating stationary-phase implementation into deabsorption prestack time migration.GEOPHYSICS,81(5),S317-S331. |
| MLA | Zhang, Jianfeng,et al."High-resolution imaging: An approach by incorporating stationary-phase implementation into deabsorption prestack time migration".GEOPHYSICS 81.5(2016):S317-S331. |
入库方式： OAI收割
来源：地质与地球物理研究所
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