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Core NMR Is Used In Carbonate Structures
Aug 22, 2017




The experimental examples of core NMR analysis include the measurement of nuclear porosity at different echo intervals, the T2 cutoff distribution of different lithologic cores, Rock Core NMR & MRI the T2 geometric mean calculation model of core constrained fluid saturation, the calculation model of nuclear magnetic permeability, Rock Core NMR & MRI and Measurement of Relaxation Response Characteristics of Different Echo Intervals and Different Recovery Waiting Time under Different Water Saturation Conditions. Some meaningful conclusions are drawn from the experimental analysis of the core nuclear magnetic resonance experiment, which provides guidance for the analysis and analysis of nuclear magnetic logging data.

Core NMR is widely used in carbonate reservoir pore structure, fluid properties and other aspects of discrimination. Due to the heterogeneity of the carbonate reservoir, Rock Core NMR & MRI the multi-solution and complexity of the conventional logging response are combined. The use of nuclear magnetic resonance logging to comprehensively reflect the reservoir pore structure and fluid properties can overcome the shortcomings of conventional logging

Core nuclear magnetic resonance function:

1, oil content water content detection;

2, water phase quantitative analysis;

3, T2 *, T2, T1 relaxation time analysis;

4, proton density, T2 - weighted, T1 - weighted imaging

5, Rock Core NMR & MRI spatial distribution of water analysis;

6, porous media physical evaluation.

Core NMR parameters:

1, magnet type: permanent magnet;

2, the magnetic field strength: 0.5 ± 0.05T, Rock Core NMR & MRI the instrument main frequency: 21.3MHz;

3, the probe coil diameter: 60mm;

4, effective sample detection range: Ø60mm × H60mm.

Size (length, width, height):

1, the overall appearance: about 1400mm × 900mm × 1200mm

2, the total weight: about 0.8T

Rock Core NMR & MRI Core nuclear magnetic resonance applications

Development test and indoor core analysis

Core nuclear magnetic resonance analysis

A, core hole permeability measurement:

1) Permeability

2) total porosity

3) Rock Core NMR & MRI movable fluid saturation

4) to bind fluid saturation

5) Oil saturation

6) Original free fluid saturation

B, Rock Core NMR & MRI pore size distribution analysis

C, fluid flow, distribution determination

D, sample water characteristics of the study