A new method for multi-exponential inversion of NMR relaxation measurements

被引：0
|
作者：
Zhongdong Wang
Lizhi Xiao
Tangyan Liu
机构：
[1] Petroleum University,
[2] Liaohe Petroleum Administration,undefined
来源：
Science in China Series G: Physics Mechanics and Astronomy | 2004年 / 47卷
关键词：
NMR; inversion; relaxation; core analysis; well logging;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A new method for multi-exponential inversion to NMRT1 andT2 relaxation time distributions is suggested and tested. Inversion results are compared with MAP-II which is based on SVD algorithm and widely accepted in the industry. Inversed NMR relaxation spectra that have different pre-assigned relaxation times from echo trains with different SNR confirm that the new method with 16 to 64 equally spaced time constants in logarithm scale will ensure the relaxation distribution. Testing results show that the new inversion algorithm is a valuable tool for rock core NMR experimental analysis and NMR logging data process and interpretation.
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页码：265 / 276
页数：11
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