核磁共振信号分析揭示流体环境和孔径分布

The amplitude of nuclear magnetic signals is proportional to the fluid content, and signal attenuation reflects the fluid environment. When the body relaxation time is slow and the surface relaxation is strong, the relaxation time T1 or T2 is proportional to S/V (contact area of the fluid with the pore wall/fluid volume), and the relaxation time spectrum reflects the actual pore size distribution.