从监测CO2封存安全性的时移VSP（垂直地震剖面）数据出发，本课题提出基于地震干涉理论的多分量VSP数据的时移监测技术流程以及主动源与被动源联合时移监测的有效实施方案，并为CO2安全封存的监测建立完整的综合评价体系。为监测地下CO2的运移，利用VSP→SSP变换构建时移SSP（地表地震剖面）数据，有效扩大时移监测范围。为探测可能导致CO2泄漏的断层及岩石裂隙，利用VSP→SWP变换构建时移多波SWP（单井地震剖面）数据，不但能实现面向目标的高精度时移监测，还可以利用横波分裂现象预测裂缝发育的变化情况，而PS波的高分辨率特性及其提供的额外信息，能进一步提高成像精度并获得岩性属性信息。基于被动源地震干涉法，能为被动源VSP数据建立成像处理及时移监测的技术流程，并为时移VSP的主动源及被动源联合勘探提供一种新的技术思路。课题还将开展波场重构的改进方法、主动源与被动源重构数据的优化匹配等方法研究。

In this study, we propos the method used for time-lapse of multi-component VSP data set and the effective method used for time-lapse of active combined with passive seismic data. We also establish a complete and comprehensive evaluation system for monitoring of CO2 storage. In order to monitor the distribution and migration of CO2, VSP→SSP transform is used for constructing time-lapse SSP data set, it can be used for effectively expanding the range of time-lapse seismic. In order to detect CO2 leaks due to rock fractures and faults, VSP→SWP transform is used for construction of time-lapse SWP multi-wave. We can obtain target-oriented high-precision time-lapse monitoring under complex near-surfce conditions. and predict changes in fracture by shear-wave splitting. The high-resolution of PS converted wave can be used for improving the quality of imaging and obtaining lithologic attribution. We establish the flow of technology for imaging and time-lapse monitoring of passive VSP data. We also provide an effective implementation plan for joint of active data set and passive data set. In this project, we also carry out the study of wavefield reconstruction and optimal matching of reconstructed data from active and passive data set.