CO_2地质封存时移垂直地震监测技术  

CO_2 monitoring with time-lapse vertical seismic profile

作　　者：赵海英 陈沅忠 李彦鹏 刘国军 李陶 夏淑君 范含周 ZHAO Hai-ying;CHEN Yuan-zhong;LI Yan-peng;LIU Guo-jun;LI Tao;XIA Shu-jun;FAN Han-zhou(New Technique Prospecting Department,Bureau of Geophysical Prospecting,Zhuozhou,Hebei 072751,China)

机构地区：[1]东方地球物理公司新兴物探开发处,河北涿州072751

出　　处：《岩土力学》2018年第8期3095-3102,共8页Rock and Soil Mechanics

基　　金：国家科技支撑计划项目(No.2011BAC08B00);中国地质调查局地质调查项目(No.1212011087128);国家能源应用技术研究及工程示范项目(No.NY20111102-1)~~

摘　　要：神华CO_2捕获和封存(carbon capture and storage,CCS)示范项目是我国首个全流程煤基CO_2捕获和在低孔低渗深部咸水层进行多层注入的CO_2封存示范项目,意在通过时移垂直地震(VSP)监测CO_2地质封存状况。介绍了CO_2地质封存时移VSP技术和监测效果。通过注气前后3次VSP观测,得到了高品质时移VSP资料,研究了一致性处理技术、矢量波场分离和多波成像技术,获得了高分辨率的多波时移VSP剖面,通过深度域标定和多种属性解释对比,分析了注气前后VSP地震响应特征,预测了CO_2地下运移范围,达到CCS项目预期监测目标。结果证明,时移VSP技术是监测CO_2地质封存与运移的有效技术手段。Shenhua carbon capture and storage（CCS） project is China＇s first complete process coal-based CO2 capture and multi-layer injection CO2 storage demonstration project in deep saline aquifer with low porosity and low permeability. With Shenhua CCS project as an example, the time-lapse vertical seismic profile（VSP） technology is presented and monitoring results of CO2 storage is obtained. By means of 3 VSP observations before and after gas injection, high quality time-lapse VSP data are obtained. High-quality time-lapse VSP images are achieved by developing consistency processing, vector wave-field separation and multi-component imaging. The seismic response characteristics of VSP before and after gas injection are analyzed by depth domain calibration and multiple attribute interpretation. The range of CO2 underground migration is predicted to reach the expected monitoring target of the CCS project. This case study shows that the VSP monitoring technology is an effective method to monitor carbon dioxide geological storage and migration.

关 键 词：CO2捕获和封存(CCS) CO2时移垂直地震(VSP) 地质封存 多波成像 

分 类 号：TU42[建筑科学—岩土工程]