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

被引：12
|
作者：
Wang, ZD
Xiao, LH [1 ]
Liu, TY
机构：
[1] Petr Univ, Beijing 102249, Peoples R China
[2] Liaohe Petr Adm, Panjin 124011, Peoples R China
来源：
SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY | 2004年 / 47卷 / 03期
关键词：
NMR; inversion; relaxation; core analysis; well logging;
D O I：
10.1360/03yw0111
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A new method for multi-exponential inversion to NMR T-1 and T-2 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.
引用
收藏
页码：265 / 276
页数：12
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