| 宋亮,陶建,郭天智.VTI介质地震成像技术在地质勘查中的应用[J].矿产勘查,2019,(3):620-623 |
| VTI介质地震成像技术在地质勘查中的应用 |
| Application of VTI medium seismic imaging technology in geological exploration |
| 投稿时间：2019-02-28 |
| DOI： |
| 中文关键词: 波动方程 单程波 波场延拓 叠前深度偏移 VTI介质 |
| 英文关键词: wave equation, one-way wave, wave field continuation,prestack depth migration,VTI media |
| 基金项目: |
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| 中文摘要: |
| 随着地震勘探目标复杂程度的提高,基于各向同性介质假设的基本成像方法越来越难以满足生产实际需要。因此研究在各向异性介质情况下的成像方法,对于各种地下构造勘探以及矿产开发,都有着极为重要的意义。论文推导适用VTI各向异性介质的SSF延拓算子并实现VTI介质炮域单程波叠前深度偏移,对VTI-HESS模型进行了计算验证。相比各项同性介质情况下的偏移成像方法,VTI介质炮域偏移方法加入了各向异性参数的影响因素,其结果与实际勘探资料更加符合,具有更好的成像效果。 |
| 英文摘要: |
| With the increasing complexity of seismic exploration targets, the basic imaging theory based on the basic assumption of simple isotropic media can not meet the actual needs of oil and gas exploration at this stage. Therefore, the study of imaging methods in anisotropic media is of great significance to the exploration of various underground structures and mineral exploitation.In this paper, the SSF continuation operator for VTI anisotropic medium is derived and the one-way prestack depth migration with VTI media in common shot domain is realized. The VTI-HESS model is verified by calculation.Compared with prestack depth migration of various isotropic media, it can be seen that prestack depth migration of VTI media has better imaging effect because of considering anisotropic parameters, which is closer to the actual imaging effect of exploration data. |
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