核磁共振测井系统中主要电磁场问题的探讨

Discussion on the Electromagnetic Problemsin the Nuclear Megnetic Resonance Well Logging System

与常规核磁共振波谱分析相比， 核磁共振测井将面临一系列特殊的问题， 这些问题的解决依赖于核磁共振测井系统的电磁场设计。本文首先阐述了这一系列的特殊问题， 然后对已有的设计方案进行了详细的分析和计算，

Compared with the NMRSpectrometer, NMR Well Logging is faced with more special diffi culties. These problems can be solved by the electromagnetic design ofthe NMRlogging system . This paper begins withtheexplanation ofthe specialdifficulties,then analyzesthe main known borehole NMRlogging ap paratusthrough strict calculation and gives some usefultechniques to solve the problems existed in those de signs