Forward Modeling of Borehole Seismic VSP Observation System
详细信息
- 责任者：Niu Huan (Institute of Resource & Geoscience ; China University of Mining and Technology ; Xuzhou 221000 ; China) ; Pan Dongming
- 刊名：Geophysical and Geochemical Exploration
- 出版年：2013
- 卷期：37(2)
- 关键词：垂直地震剖面 ; vertical seismic profiles ; 地震勘探 ; seismic exploration
- 页码：p.280-286
- 图表：illus., 6 tables, 11 refs.
- 分类号：1600
- issnNo：ISSN1000-8918
- isbnNo：CN11-1906/P
摘要
Based on analyzing the characteristics of borehole VSP observation system,the authors investigated the types and features of the observed seismic waves,analyzed ray-tracing and composite records of several VSP models(horizontal interface model,oblique interface model,meta-deviation distance model and detection point model),conducted forward modeling by using the ray-tracing method so as to obtain the forward result,and studied kinematic characteristics of the seismic wave.Some regularities have been detected: the number of the strata penetrated by the drill hole is equal to the number of intersecting points between the ascending waves and the descending waves in the composite record;there exist differences between the composite ray-tracing record obtained by utilizing P wave and that obtained by utilizing the transform wave,which shows that the transform wave has some influence on VSP composite record;strata of different dip angles have influence on travel-time features of ascending wave and descending wave as well as the energy characteristics of VSP;there exist reverse polarity phenomenon on the horizontal component of VSP composite record,which is consistent with the theoretical phase.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |