Abstract:

Based on a previous study on the absorption mechanisms of liquids in oil reservoir core, a method for determining the effective permeability of sandst
one was developed in this study, and the results obtained appeared relatively satisfactory. The effective permeability of sandstone determined by this method was closer to the real value than that obtained by the conventional method. The value of effective permeability derived can be used for evaluating the performance/cost ratio of using the water flooding method in an oil field, and for studying the distribution of surplus oil in an oil field. It is believed that this method will find many practical applications.

Key words: NMR, oil storage core, effective permeability, effective porosity, spin-lattice relaxation time