Dynamics of water and oil at the solid-liquid interface in macroporous media and reservoir rocks

摘要

Nuclear magnetic relaxation dispersion experiments at different temperatures,using the magnetic field-cycling method.are reported.These experiments allow the obtaining of original information about water or oil molecular dynamics at soild-luqid interface in porous media,such as grain packing or reservoire rocks.These results on molecular dynamics atthe pore surface are of real interest for oil-recovery.The water surface diffusion conefficients are compared to the volume self-diffusioncoefficients of water inpores,measured by PGSE method.the latter values being more than an order of magnitude higher thn the surface ones.