One Modified Ray-Path Elastic Impedance and Elastic Parameter Inversion
详细信息
- 责任者：Wang Xuben (Chengdu University of Technology ; Chengdu 610059 ; China) ; Liu Lihui
- 刊名：Geophysical Prospecting for Petroleum
- 出版年：2011
- 卷期：50(4)
- 关键词：反演问题 ; inverse problem
- 页码：p.331-335
- 图表：6 illus., 19 refs.
- 分类号：1600
- issnNo：ISSN1000-1441
- isbnNo：CN32-1284/TE
摘要
During the direct computation of v_P/v_S by ray-path elastic impedance, the analytic expression is high-power function consisted of the ratio of two elastic impedance, which has poor stability and antinoise ability, so it is limited for application. Therefore, one modified ray-path elastic impedance need to be developed to make the computation of elastic parameters more stable. Through using binomial theorem quadratic to the ray-path elastic impedance formula, the ray-path elastic impedance was expressed into a function of P-wave impedance and S-wave impedance. By experimental analysis and error derivation, the analytical formula of P-wave impendence, S-wave impendence and other elastic parameters were given.