摘要
流体流动的核磁共振(NMR)在线测量是一种高效、无损的探测方式,可广泛应用于管道流体输送过程、化学反应动态流程、河流流动等具有时移变化特点的过程在线检测.但是流动状态下样品流速会对NMR测量造成诸如磁化时间不充分、采集信号损失等不容忽视的影响.通过量化分析流动状态对NMR测量的影响因素,提出回波串校正方法,实现流动状态下的NMR流体测量.
NMR measurement of flowing fluid is a highly effective and non-destructive online detection method, which can be widely used in pipeline fluid delivery process, chemical reaction process, river flowing process and other time-shift processes. However, flow will induce incomplete polarization and incomplete signal acquisition, such that the effects of flow rate on NMR measurement cannot be ignored. In this work, we analyzed quantitatively how factors related to the flowing state affect NMR measurement. Correction methods were proposed to achieve accurate NMR flowing fluid measurements.
作者
邓峰
肖立志
陶冶
耿东士
王梦颖
DENG Feng;XIAO Li-zhi;TAO Ye;GENG Dong-shi;WANG Meng-ying(The Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation (CNPC), Beijing 100083, China;State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China)
出处
《波谱学杂志》
CAS
CSCD
北大核心
2017年第1期78-86,共9页
Chinese Journal of Magnetic Resonance
基金
国家科技重大专项课题资助项目(2016ZX05031-001)
国家重大科研仪器研制项目(21427812)
国家高技术研究发展计划(“863”计划)资助项目(2013AA064605)
