微地震监测中等效速度定位精度分析及应用  

Precision analysis and application of equivalent velocity in micro-seismic monitor

作　　者：刁瑞[1] 胡晓婷[1] 崔庆辉[1] 尚新民[1] 芮拥军[1] 

机构地区：[1]中国石化胜利油田分公司物探研究院,山东东营257022

出　　处：《油气藏评价与开发》2015年第1期49-53,共5页Petroleum Reservoir Evaluation and Development

基　　金：国家高技术研究发展计划(863)项目(2011AA060303);中国石化股份公司科技攻关项目(P13078)联合资助

摘　　要：地面阵列式微地震监测的数据量大幅提升,导致现场处理效率降低。在阵列式微地震监测现场处理中,等效速度可以提高现场处理效率,但由于速度模型的误差会影响有效事件的定位精度。根据测井信息、射孔点坐标和实际观测系统坐标,建立了三维水平层状介质模型,利用射线追踪方法模拟阵列式微地震数据,通过定位精度分析验证了等效速度的可行性和实用性,并将等效速度应用到实际阵列式微地震资料的现场处理中。The micro-seismic data of thousands detectors were increased significantly. In order to realize real-time location of micro-seismic events and optimize hydraulic fracturing plan, equivalent velocity was used in field processing. But the error rate of velocity model affected the positioning accuracy of the model effective event. Based on the logging information, the perforating point coordinates and the actual coordinates of the observation system, 3D flat layer model was built. And array micro seismic data were simulated by ray tracing method. Meanwhile, feasibility and practicality of equivalent velocity were tested and verified by location accuracy for the application in field processing of actual array micro seismic data.

关 键 词：水力压裂 地面阵列式微地震 等效速度 定位精度 现场处理 

分 类 号：P631[天文地球—地质矿产勘探]