Nuclear Magnetic Resonance can be used to study the properties of a fluid saturated rock sample. Using a magnetic field the tool aligns the spin of all protons in the pore fluid, the time to return to a random orientation (T2) is an indication of the both the fluid and its interaction with the rock sample.
Laboratory NRM can be used for the following
- Determining sample porosity and poresize distribution
- Determining Irreducable water saturation on fresh state samples
- Determining residual Oil saturation
- Providing a calibration method for down hole NMR solutions
- Developing models to predict changes in pore size (facies)