Reflectivity Coefficient in Laterally Variable Velocity and Small-Scale Area
详细信息
- 责任者：Li Shengjun (Northwest Subsidiary of Research Institute of Exploration and Development ; CNPC ; Lanzhou 730020 ; China) ; Gao Jianhu
- 刊名：Natural Gas Geoscience
- 出版年：2011
- 卷期：22(5)
- 关键词：地震勘探 ; seismic exploration ; AVO技术 ; AVO techniques
- 页码：p.878-883
- 图表：20 illus., 12 refs.
- 分类号：1600
- issnNo：ISSN1672-1926
- isbnNo：CN62-1177/TE
摘要
In past 30 years, the development of amplitude versus offset (AVO) research went up and down. In recent years, the AVO application has been extensively accepted and used rapidly. In the exploration of the heterogeneous reservoir, the AVO is an irreplaceable method, in comparison with others. In this paper, the authors discuss the influence of lateral small-scale size and velocity variation on the reflectivity coefficient by means of transverse small-scale design, forward simulation calculation, and comparison of theoretical values of Zoeppritz equation. The reflectivity variation depends on the lateral scale size and velocity. The authors find a rule of reflectivity coefficient with offset distance in the lateral velocity.