| 起伏地表条件下的弹性波叠前逆时偏移 |
| |
| 引用本文： | 刘阳,赵虎,尹成,武泗海,代荣获,邸志欣.起伏地表条件下的弹性波叠前逆时偏移[J].煤田地质与勘探,2019,47(1):181-186. |
| |
| 作者姓名： | 刘阳 赵虎 尹成 武泗海 代荣获 邸志欣 |
| |
| 作者单位： | 西南石油大学地球科学与技术学院;中国石油化工集团公司石油工程地球物理有限公司科技研发中心 |
| |
| 基金项目： | 国家科技重大专项课题（2016ZX05024-001）；中国石油化工集团公司科技攻关项目（JP17039，JP17037） |
| |
| 摘 要： | 目前，地震勘探条件复杂、地下地质构造多样的“双复杂”地区的地震勘探面临着诸多挑战，特别是地表起伏条件给地下复杂构造精确成像带来了困难。通过研究起伏地表条件下的弹性波叠前逆时偏移方法，采用简洁有效的处理方法解决起伏地表的自由边界条件；利用有效边界的边界存储策略解决弹性波叠前逆时偏移中存储量大的问题。数值实验结果证明该方法能够准确地重建震源波场，SEG加拿大起伏地表逆掩断层模型进一步验证了提出方法的有效性。
|
| 关 键 词： | 起伏地表 弹性波 逆时偏移 边界存储策略 复杂构造精细成像 |
| 收稿时间： | 2017-10-16 |
Elastic wave prestack reverse time migration on undulating surfac |
| |
| Abstract: | At present, seismic exploration is facing many challenges in the "double complex" area, especially the undulating surface make it difficult to accurately image the underground complex structures. In this paper, we have studied the elastic wave prestack reverse time migration method for undulating surface, and a simple and effective treatment method was adopted to solve the free boundary conditions of undulating surface. In addition, the storage strategy of the effective boundary was used to solve the problem of big storage of elastic wave prestack reverse time migration. The numerical experimental results also show that this method can accurately reconstruct the source wave field. Finally, test of SEG Canadian overthrust fault model for undulating surface has further verified the effectiveness of the method proposed in this paper. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《煤田地质与勘探》浏览原始摘要信息 |
| 点击此处可从《煤田地质与勘探》下载免费的PDF全文 |
