One of the best methods for the characterization of pore networks and their interaction with fluids is performing NMR flow studies.
These studies involve using a pressurized vessel within the NMR or MRI instrument to flow fluid at pressure through the core sample while scanning the core with the instrument. The scans provide images of the fluid flowing through the core and can provide a lot of information about wettability, pore throat size, pore volumes, relative permeability, and saturation.
These studies provide a key measurement technique for those researching and performing enhanced oil recovery (EOR). EOR is the process of increasing the amount of oil that can be recovered from an oil reservoir, usually by injecting a substance into an existing oil well to increase pressure and reduce the viscosity of the oil.
In order to truly replicate down hole conditions, core plug samples should be placed under confining pressure while performing NMR flow studies. Our P5 cell for Overburden studies allows up to 5,000psi of confining pressure. This allows fluid to flow through the core sample at up to 5,000psi. These pressures are sufficient to replicate conditions found in most of today’s reservoirs.
For more information on our equipment capabilities for these studies, click here.