Evaluation of Viscous Oil-Bearing, Water Flooded Reservoirs

摘要

In this North China Basin field, the evaluation of newly drilled in-fill wells oil saturation, capillary-bound water volume and permeability is difficult. Conventional saturation evaluation is hampered by constantly varying water salinities due to the fresh water flooding EOR program. NMR-derived effective porosity, capillary-bound water volume and permeability are adversely affected by the extreme viscosity of the crude oil.