Case Studies of Nuclear Magnetic Resonance Applications in Energy Exploration

Background Overview

 

Numai focuses on the development and promotion of low-field nuclear magnetic resonance (LF-NMR) technology. The company boasts strong R&D capabilities, comprehensive manufacturing services, and a mature operational management system, earning its status as a national high-tech enterprise. Numai has developed multiple NMR analytical instruments, receiving numerous national awards and certifications. Its products are widely applied in core analysis, shale oil and gas, oil and gas exploration and development, coalbed methane, and natural gas hydrates, earning broad industry recognition. Through continuous technological and application development alongside years of market operation, Numai has rapidly grown into a dynamic and promising company in the emerging field of low-field NMR analytical instruments.

Case 1: Conventional Core Porosity and Fluid Saturation Analysis

The T2 spectrum reveals pore size distribution. Larger pores contain water with longer relaxation times, while smaller pores impose greater confinement on water molecules, resulting in shorter relaxation times. The position of each peak corresponds to pore size, and the peak area reflects the relative abundance of pores of that size.

Case 2: NMR Imaging of Core Interiors

Cores exhibit pronounced anisotropy, and local sampling often lacks representativeness. Direct analysis of full-diameter 1–2 inch cores provides the most accurate reflection of formation characteristics.

Case 3: NMR Imaging of Tight Cores

Instrument used: MacroMR12-150H-I Large-Aperture NMR Imaging Analyzer

Keywords: saturation, movable fluid properties, NMR imaging