| 地震波旅行时计算方法及其模型试验分析 |
| |
| 引用本文： | 陈可洋.地震波旅行时计算方法及其模型试验分析[J].石油物探,2010,49(2). |
| |
| 作者姓名： | 陈可洋 |
| |
| 作者单位： | 中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆,163712 |
| |
| 摘 要： | 地震波旅行时的计算是地震波偏移成像技术和地震层析成像技术的核心内容,同时也是实现保幅叠前偏移成像的重要因素。推导了地震波波动方程高阶有限差分法计算格式,提出了最大绝对振幅能量节点初至旅行时拾取的方法。均匀介质模型试验表明,该方法与用解析解、程函方程法计算的旅行时等值线基本重合。基于层状介质模型、凹陷模型和Marmousi模型对方法的适用性进行了试验,将由该方法计算得到的初至旅行时作为叠前逆时成像条件,对凹陷模型和Marmousi模型的数值模拟记录进行了叠前逆时偏移成像,偏移叠加剖面很好地反映了模型的地质特征。
|
| 关 键 词： | 正演模拟 |
| 收稿时间： | 2009-6-11 |
| 修稿时间： | 2009-9-27 |
Computation method for seismic wave travel-time and its model experiment analysis |
| |
| Chen Keyang.Computation method for seismic wave travel-time and its model experiment analysis[J].Geophysical Prospecting For Petroleum,2010,49(2). |
| |
| Authors: | Chen Keyang |
| |
| Affiliation: | Exploration and Development Research Institute,Daqing Oilfield Company Limited,Daqing 163712,China |
| |
| Abstract: | The computation of seismic wave travel-time is the core for seismic wave migration and seismic tomography,which is also an important factor for realizing amplitude-preservation pre-stack migration. We derived the high-order finite-difference computational format for seismic wave equation,and put forward to a method for picking up first arrival corresponding to maximal absolute amplitude energy while forward modeling.The experiment on the isotropic model shows that the contour maps of travel-time obtained by... |
| |
| Keywords: | forward modeling travel-time calculation maximal absolute amplitude energy high-order finite-difference scheme absorbing boundary condition pre-stack reverse-time depth migration |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《石油物探》浏览原始摘要信息 |
|
点击此处可从《石油物探》下载全文 |
