High temperature and high pressure displacement nuclear magnetic resonance imaging analysis system for rock sample displacementIt is a core nuclear magnetic resonance imaging analysis system based on rare earth neodymium iron boron material permanent magnet low field nuclear magnetic resonance technology, which can simulate high-pressure conditions in geological formations. This instrument has many powerful functions, which can simulate high-pressure conditions and perform related measurements such as FID, Hahn echo, IR sequence, CPMG sequence, IR-CPMG based on nuclear magnetic resonance technology. It can meet the needs of pore, permeability, and saturation testing in the field of petroleum rock cores. This system fully utilizes the technical advantages of NMdigI spectrometer and can be widely applied in the field of magnetic resonance imaging research for medium-sized samples. While improving the resolution of sample images, it can also save users a lot of investment and operating costs, allowing NMR application research to expand on a larger scale.

High temperature and high pressure displacement nuclear magnetic resonance imaging analysis system for rock sample displacementAdopting modular design, different configurations can be provided according to the needs of different users to fully utilize different functions. By using a self-developed high-pressure core gripper, it is possible to simulate the imaging of sample cross-sections during fluid displacement under high-pressure conditions in the formation, and also achieve standard measurement and analysis of rock porosity, permeability, and saturation. The magnet can measure 60mm samples and complete magnetic resonance imaging and analysis of medium-sized samples. The operating software and analysis application software have good stability, easy operation, and high reliability, ensuring the accuracy of experimental results.
Solution
Exploration and development of low-permeability oil fields

• Evaluation of movable fluid content in low-permeability oil fields
• Evaluation of pore radius distribution in low-permeability oil fields
• Oil displacement mechanism in low-permeability oil fields (evaluation of dynamic oil-bearing pore radius distribution)
• Evaluation of fracture and microfracture content in low-permeability oil fields
• Evaluation of Fracture Mechanism in Low Permeability Oilfield (Changes in Cracks and Microcracks Before, During, and After Fracturing)
• Evaluation of oil displacement effect in low-permeability oil fields

Exploration and development of gas fields

• Evaluation of the Impact of Overburden Pressure Changes on Porosity, Permeability, etc
• Evaluation of Pore Radius Distribution in Gas Field Rocks
• Evaluation of Gas Field Water Drive Mechanism
• Evaluation of the Content of Gas Field Karst Caves, Cracks, and Microcracks
• Research on the Mechanism of Gas Field Transformation (Changes in Cracks and Microcracks Before and During Fracturing)

NMR Analysis
a、 Measurement of permeability saturation in core holes:
1) Penetration rate
2) Total porosity
3) Movable fluid saturation
4) Bound fluid saturation
5) Oil saturation
6) Original saturation of free fluid
b、 Aperture distribution analysis;
c、 Measurement of fluid fluidity and distribution;
d、 Study on the characteristics of water in the sample;
e、 Experimental seepage mechanism analysis (dynamic, timely or changes in oil and water saturation and oil containing pores during the experimental process)
magnetic resonance imaging
a、 Two dimensional imaging at any level;
b、 Multi level two-dimensional imaging;
c、 Pore imaging observation;
d、 Rheological imaging observation of water and oil distribution;
e、 Two dimensional imaging of fluid distribution changes in high-pressure displacement environment
On site drilling cuttings and wellbore coring analysis
Nuclear magnetic cuttings logging analysis
Rock debris logging for reservoir evaluation, reducing coring volume and increasing reservoir geological information. Real time acquisition of reservoir geological information to guide production
Nuclear magnetic resonance wellbore coring analysis
Provide movable water content to quickly determine flooding situation
Basic parameters:
1. Magnet type: permanent magnet;
2. Magnetic field strength: about 0.5T;;
3. Probe coil diameter: 60mm;

High temperature and high pressure core holder:
1. Sample diameter: 25.4mm (1 inch);
2. Sample length: 20-60mm;
3. Capable of withstanding axial pressure: 20MPa;
4. Can withstand confining pressure: 22MPa;
5. Temperature tolerance: 80 ℃;
6. Interface: Universal Fast Interface;

(Optional) High temperature and high pressure displacement device:
1. Pressure: 20Mpa;
2. Temperature: 80 ℃;