Abstract:

The paper presents a study conducted by the Vietnam Petroleum Institute (VPI) to investigate the effects of reservoir characteristics on the relative permeability and capillary pressure of the Lower Mioxene formation of CuuLong Basin. The results of core analysis show that rock properties have significant effect to relative permeability curve and capillary pressure. With a water wettability tendency of Lower Mioxene formation, high initial water saturation for poor rock type and decrease as the rock quality increases. Water-phase relative permeability at residual oil saturation less than 0.4 and oil-water phase points which have equal flow rate at water saturation greater than 0.5. While, oil effective permeability is from 0.2 to 0.7 times for absolute permeability value. The results of core analysis in each field of Cuulong Basin were classified by Global Hydaulic Element, characteristics analysis based on oil reservoir classification into Hydraulic Unit (HU) with various porosity-permeability relation. In addition, the authors present the results of building representative relative permeability and capillary pressure curves for the Lower Mioxene formation of CuuLong Basin