井下核磁共振技术的进展

Some Progresses on Downhole NMR Technology

井下核磁共振技术涉及到了电、磁及测量方法等多方面技术。主要探讨并分析了非谐振技术、多频脉冲技术、T1测井以及脉冲序列优化的技术进展,对比了这些技术的优缺点。其有助于提高井下核磁共振仪器性能及油气精细勘探的准确性,实现找油找气以及高效开发的目标。基于新技术、新方法,对未来核磁共振测井发展方向进行了展望。

Nuclear magnetic resonance(NMR) logging involves electronic, magnetic,measurement methods,etc.This paper mainly discusses,analyzes and compares the nonresonant technique,multi-frequency pulse,T1 logging and the optimization of pulse sequences.They are helpful to improve the performances of downhole NMR instrument,and thus the accuracy of oil and gas exploration can be improved.The goal of looking for oil gas and efficient development could be achieved.Based on the new technology and new method,the future development for NMR logging are prospected.