Quantitative Evaluation of Reservoir Separation with MR-ML Technology

Abstract

Abstract:

Reservoir separation factor is an important index relfecting petrophysics, heterogeneity and depositional environment of the reservoir. Separation factor is usually calculated through grading analysis (grain size sorting) and mercury intrusion method (pore throat sorting) in laboratory. Pore throat sorting calculated by NMR method was usually based on calibration curve relating T_2g to separation factor measured by conventional methods. Based on the theory underlying conventional separation factor calculation, and combined with sorting characteristics associated with cumulative T₂ distribution, two new methods were proposed to evaluate reservoir sorting on a single sample. The calculation results of these two methods were found to be consistent with those obtained by other methods.

Key words: MR-ML, separation factor, capillary pressure curve, cumulative T₂ distribution, quantitative evaluation

CLC Number:

WANG Zhi-Zhan, XU Xiao-Qiong. Quantitative Evaluation of Reservoir Separation with MR-ML Technology[J]. Chinese Journal of Magnetic Resonance, 2010, 27(2): 214-220.

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