Large-Bore NMR Imaging and Analysis System MacroMR Series MacroMR Series – Large-Bore NMR Imaging & Analysis Systems

Macroscale Samples

Microscale Features

Statistical Representation

Multi-Field Coupling

In-Situ & Online

Fast & Non-Destructive

Measure samples from millimeter to decimeter scale

Characterize molecular-scale dynamics

Capture all ^1H signals within the ROI

Enable coupling of temperature, pressure, and chemical fields

Real-time monitoring via temperature/pressure control modules

Rapid, seconds-to-minutes measurements without destroying samples

Key Specifications

Model: MacroMR12-150H-I

MacroMR12-150H-HTHP (40 MPa-PMMR)

MacroMR12-110H-I

Magnetic Field Strength: 0.3 T ± 0.03 T

Field Homogeneity: ≤ 50 ppm

Magnet Geometry: C-shaped open design

Sample Orientation: Transverse / Longitudinal

Key Features

1. C-shaped gap for easy, stress-free loading

Designed for large samples; fits 1–4 inch diameter cores

2. High-precision thermostated probe with advanced gradients

Stable, reliable acquisition for richer functions and better imaging

3. Comprehensive accessory ecosystem

Multiple core holders and chambers simulate real conditions (temperature, pressure, fluids, gases)

Capabilities

T₁/T₂ relaxation spectra; T₁/T₂/proton-density weighted imaging
Application of temperature, pressure, and fluid fields (accessories required)

Applications

1. Reservoir Petrophysics

Porosity / pore-size distribution
Oil / water saturation
Mobile / bound fluid saturation
Permeability
Wettability evaluation / layered water cut

2. Reservoir Development Evaluation

Quantify fracture development during hydraulic fracturing
Online analysis of porosity evolution during acidizing;
polymer / chemical EOR monitoring
High-temperature, high-pressure two-phase displacement visualization & evaluation
Microscopic pore-flow parameters under confining / hydrostatic load
Triaxial compression damage analysis
Imbibition processes and characteristics

3. Unconventional Energy

Isothermal adsorption / desorption of shale gas / CBM
CO₂ competitive adsorption experiments
Gas hydrate formation / decomposition
Gas–water two-phase displacement analysis
Supercritical CO₂ fracturing / gas displacement

Online Characterization of CO₂ Miscible Flooding Mechanism Using Low-Field NMR

Pore Size Distribution Study of Full-Size Sandstone Reservoir Cores Based on NMR

A Low-Field NMR Investigation of the Effect of Fractures on Recovery Efficiency in Low-Permeability Rocks

Low-Field NMR-Based Case Studies on Liquid Nitrogen Freeze–Thaw Modification of Physical Properties in Coals of Varying Ranks

Investigation of Micropore Structure in Coal Reservoirs Using Low-Field NMR

Application of Low-Field NMR Technology in Dynamic Monitoring of Polymer Flooding in Core Samples

Investigation of Competitive Adsorption of CH₄, CO₂, and N₂ Using Low-Field NMR

NMR Reveals the Dynamic Spontaneous Imbibition Process

Online Characterization of CO₂ Miscible Flooding Mechanism Using Low-Field NMR

Natural Gas Hydrates — Tiny Crystals, Tremendous Energy

Large-Bore Low-Field NMR Imaging and Analysis System

Published Papers:

Lu Y , Wang L , Ge Z , et al. Fracture and pore structure dynamic evolution of coals during hydraulic fracturing[J]. Fuel,2020, 259:116272.1

Gan Q , et al. Effects of heating temperature on pore structure evolution of briquette coals[J]. Fuel, 2021, 296(2):120651.

Bing W A , et al. Adsorptive behaviors of supercritical CO2 in tight porous media and triggered chemical reactions with rock minerals during CO2-EOR and -sequestration[J]. Chemical Engineering Journal, 381(C):122577-122577.

Feng Wang; Yanbin Yao; Zhiang Wen,et,al. Effect of water occurrences on methane adsorption capacity of coal: A comparisonbetween bituminous coal and anthracite coal. Fuel, 2019, 266-285

Chaohui L , Zhengfu N , Mingqiang C , et al. Experimental study of boundary condition effects on spontaneous imbibitionin tight sandstones[J]. Fuel, 2019, 235:374-383.

Pseudo-Triaxial Module

T₁/T₂ Relaxation Spectrum Measurement、T₁ / T₂ / Proton Density-Weighted Imaging

Layered T₂ Spectra Analysis、Application of Layer-Specific Signal Quantification under Variable Temperature, Pressure, Fluid Field, and Stress Field (Auxiliary Components Required)

Variation of Internal Water Distribution in Rocks under Different Confining and Axial Pressures

Low-Temperature High-Pressure Module

A Stable Low-Temperature Environment Down to –30 °C

High Data Accuracy — Better Suited for Detecting Subtle Signal Changes in Hydrate Studies

High-Temperature High-Pressure Module

Various Modular Accessories

High-Precision Thermostatic Probe

More Stable Data Acquisition

High-Temperature and High-Pressure Gas Module

A Component Specifically Designed for Gas Adsorption Experiments, Providing Stable Pressure and Temperature Simulation
Compatible with Various Gases (N₂, CO₂, CH₄) and Sample Types (Coal, Core Samples, etc.) for Adsorption Experiments