波谱学杂志2011，Vol.28Issue(1)：76-83,8.
一种评价核磁共振测井仪探测特性的方法
A Method for Evaluating the Performance of NMR Logging Device
摘要
Abstract
The main parameters for evaluating the performance of NMR well logging Device include sensitive volume shape, depth of investigation and signal strength. These parameters are determined by the field distribution of the sensor. In order to estimate the performance of NMR well logging device during its prophase design, the field distribution of MRIL-P was simulated by the finite element method, and the field distribution was optimized. Based on the results of simulated optimization, the sensitive volume shape of MRIL-P was obtained, and the relationship between signal strength and working frequency were validated. These results indicated that, in an inhomogeneous field,the signal strength was controlled by field strength, and increased with increasing working frequency. Our results showed that this method can be used to evaluate the perform ance of NMR well logging device during its prophase design,and direct the overall design.关键词
核磁共振测井仪/敏感区/探测特性/磁场分布/数值模拟/信号强度Key words
NMR logging device/ sensitive volume detect performance/ field distribution/ numerical simulation/ signal strength分类
数理科学引用本文复制引用
胡海涛,肖立志,吴锡令..一种评价核磁共振测井仪探测特性的方法[J].波谱学杂志,2011,28(1):76-83,8.基金项目
国家自然科学基金资助项目(41074102),科技部国际合作资助项目(2009DFA61030). （41074102）
