Dynamic model and remaining oil distribution of fluvial reservoir in Gudao Oilfield

After long-term water-flooding development, the macro and micro parameters of reservoir in the fluvial reservoir of Guantao Formation in Gudao Oilfield changed regularly with gradual development of reservoir. Different parameters have variable characters and regularity. While the porosity change is small, the permeability of reservoir varies greatly with water-flooding development. After the reservoir development turns into high water-cut stage, the change of reservoir parameters is getting fast. The dynamic models of macro and micro parameters were built up by using a great deal of log and core data from Gudao Oilfield. The control factors for remaining oil in fluvial reservoir were investigated. The distribution modes of remaining oil in fluvial reservoir of Gudao Oilfield at different water-cut stage were built up. The models can offer geological foundation for developing remaining oil of Guantao Formation in Gudao Oilfield.