首波、模式波及井孔全波时域波列的数值模拟与分析  

The numerical simulation and analysis on the head wavesmodes and full waveform in borehole

作　　者：宋立军[1] 马俊[1] 王克协[1] 

机构地区：[1]吉林大学物理学院

出　　处：《东北师大学报（自然科学版）》2005年第2期50-54,共5页Journal of Northeast Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(40374043)

摘　　要：　运用准弹性地层下的点声源裸眼井模型,分别采用SMF支割线积分围道和竖直路径积分围道,用科希定理计算了分波(首波、横波及模式波),并同时用实轴积分法计算了全波.结果表明,不同积分围道的分波之和都与全波相符合.通过对比和分析,揭示了井孔声波中不同成分波的相互转换和作用规律.<Abstrcat>In this paper,the borehole model with point source under the quasi-elastic formation is adopted.According to Kexi rule,the SMF branch-cut integral path and the vertical integral path and calculated the head waves and mode waves are chosen.With comparison and analysis,the regulations of interaction and their conversion are found.

关 键 词：SMF支割线积分 竖直路径积分 首波 模式波 全波 

分 类 号：O422[理学—声学]