Acta Phys. -Chim. Sin. ›› 1994, Vol. 10 ›› Issue (06): 484-488.doi: 10.3866/PKU.WHXB19940602

• Communication • Previous Articles     Next Articles

NMR Relaxation Time Weighted Micro-imaging Method for Rock Samples

Xiao Li-Zhi, Du You-Ru, Ye Zhao-Hui   

  1. Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics, Chinese Academy of Sciences, Wuhan 430071
  • Received:1994-03-02 Revised:1994-04-15 Published:1994-06-15
  • Contact: Du You-Ru

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Abstract:

According to the relations of pixel signal intensity with the repetition time T_R and echo time T_E in spin-echo single slice imaging pulse sequence, by combining the multi-exponential relaxation procedure of fluids saturated in porous media, tlle information about pore structure of the tested rock is obtained with T_1- and T_2-weighted microimagings. The macro- and micro-pore regions can be distinguished with the information.

Key words: NMR microscopy, T1-weighted image, T2-weighted image, Biexponential relaxation, Rock sample