Special Core Analysis (SCAL)

Petrophysics 3,677 Views

Nuclear Magnetic Resonance (NMR) Logging




The nuclear magnetic resonance (NMR) logging tool is used to measure in-situ rock properties such as porosity, permeability and residual oil saturation. NMR technology is also applied as a tool for special core analysis. NMR imaging enables the analyst to visualize fluids in a porous medium in three dimensions on a sub-millimeter scale, and thus to study porosity and fluid saturation distributions, along with fractures and drilling mud invasion. NMR images only the mobile fluids within the pore structure. Figure 1 shows an NMR image of the petrophysical simulation of pore-scale Darcy flow in sandstone. Figure 2 shows a comparison of NMR porosity with the core porosity.

Petrophysical simulation for NMR: pore scale Darcy flow in sandstone, core sample, Special Core Analysis, Capillary Pressure, Relative Permeability, Steady-state and Unsteady state, Wettability Determination, Reservoir Condition Corefloods, Improved Oil Recovery (IOR, EOR) Studies, Petrophysical Correlation Measurements, Archie Exponents a m and n, NMR Core Analysis, Core Geomechanics, Core Mechanical Properties, Pore Volume Compressibility, Formation Damage Remediation, Rock Fluid Sensitivity, Mobile Fines (Fines Particle Migration), Fluid Compatibility, Mud Completion Fluid Damage, Perforation Optimization, Relative Permeability Effects, Asphaltene Precipitation, Computed Tomography CT Scan Evaluation, Petroleum Core Analysis
Figure 1: Petrophysical simulation for NMR: pore scale Darcy flow in sandstone




Comparison of core and NMR porosity, core sample, Special Core Analysis, Capillary Pressure, Relative Permeability, Steady-state and Unsteady state, Wettability Determination, Reservoir Condition Corefloods, Improved Oil Recovery (IOR, EOR) Studies, Petrophysical Correlation Measurements, Archie Exponents a m and n, NMR Core Analysis, Core Geomechanics, Core Mechanical Properties, Pore Volume Compressibility, Formation Damage Remediation, Rock Fluid Sensitivity, Mobile Fines (Fines Particle Migration), Fluid Compatibility, Mud Completion Fluid Damage, Perforation Optimization, Relative Permeability Effects, Asphaltene Precipitation, Computed Tomography CT Scan Evaluation, Petroleum Core Analysis
Figure 2: Comparison of core and NMR porosity



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