Elastic Wave Equation Forward Modeling for Complex Surface and Complex Structure Model
详细信息
- 责任者：Pei Zhenglin (Key Lab. of Geophysics ; CNPC ; China University of Petroleum ; Beijing 100249 ; China) ; He Guangming
- 刊名：Oil Geophysical Prospecting
- 出版年：2010
- 卷期：45(6)
- 关键词：地震勘探 ; seismic exploration ; 四川 ; Sichuan Province
- 页码：p.807-818
- 图表：8 illus., 12 refs.
- 分类号：1600
- issnNo：ISSN1000-7210
- isbnNo：CN13-1095/TE
摘要
Base on the method of geological-geophysical modeling and by integrating typical relief surface and near surface structure with the complex structure model, the flat surface complex structure model, complex surface and complex structure model and complex surface and complex structure model arbitrary relief surface was utilized to conduct elastic wave forward modeling for above geological-geophysical model. The results show that: 1) the obvious difference caused by relief surface in the wave field characteristics and shot record appearance for different shot points were represented by the effect of the scattered wave, the obvious difference caused by surface weathering zone in the wave field characteristics and shot record appearance for different shot points were represented by low pass filtering effect; and 2) after the model forward data was migrated in depth domain, the horizons, layers and fault points were imaged clearly, the stratigraphic occurrence and the space location match the field model, but failed to represent the fine velocity structure.