Time Matching between P-SV Wave and P-P Wave

• 责任者：Chen Shuangquan (State Key Lab. of Oil & Gas Resources and Prospecting ; China University of Petroleum ; Beijing 102249 ; China) ; Wang Shangxu
• 刊名：Oil Geophysical Prospecting
• 出版年：2010
• 卷期：45(4)
• 关键词：转换波 ; converted waves ; 多波地震勘探 ; multiwave seismic exploration
• 页码：p.497-501
• 图表：5 illus., 12 refs.
• 分类号：1600
• issnNo：ISSN1000-7210
• isbnNo：CN13-1095/TE

In this paper, the time matching between P-SV wave and P-P wave in pre-stack joint inversion was studied, it is believed that the matching effect is not great if the V_P/V_S ratio which is picked up from pre-stack time migration is used as V_P/V_S ratio in time matching between P-SV wave and P-P wave. By utilizing the datasets in mathematical model forward simulation in this paper, the V_P/V_S ratio scanning method could be used to correct the deviation in the matching between P-SV wave and P-P wave, based on the major makers in structural imaging the general time and velocity ranges in the scanning process can be determined, by selecting calculation window to conduct V_P/V_S ratio scanning the optimal V_P/V_S ratio factor was obtained, then the matching is completed.