Flow Mechanism and Waterflooding Characteristic of Conglomerate Lithofacies

The remaining oil in the conglomerate reservoir can be prospected and recovered based on the diversity of alluvial fan rock types of the reservoir and oiliness and fluidity and oil-water movement of different lithofacies.The field observation,core analysis and FMI logging of the conglomerate reservoir show that this reservoir consists of 7 types of lithofacies.The study result shows that the cross bedding-fine conglomerate and parallel-bedding sandstone is the best in porosity,oil saturation and fluidity,grain-supported middle-coarse conglomerate and massive pebbled sandstone are the next,while argillaceous conglomerate and wavy-bedding siltstone are the worst.It is then concluded that middle-coarse conglomerate and massive pebbled sandstone should be the main object of later development or adjustment.