关键词: 正演模拟, 储层预测, 连通性, 地质模型, 馆陶组

Abstract: Some quantifying parameters are so far unclear about water cut rising rule of reservoirs. The corresponding relationship between water cut rising features and geological features of reservoirs has not been established. Reservoir geological model and case analyses were used to define the quantifying parameters of water cut rising rate. The quantifying parameters of water flooding rate and the corresponding relationship between water breakthrough time in wells and bottom-water types were obtained. Two types of reservoir heterogeneity were defined: discrete heterogeneity and continuous heterogeneity.Discreteheterogeneousreservoirshavethestep-typecurveof water cut rising, while continuous heterogeneous reservoirs have the continuous curve of water cut rising. The relative permeability curves of porous media are not straight lines because of high capillary pressure, which results in the non-straight line type of water cut rising curves in such reservoirs. However, the relative permeability curves of fractured-vuggy media are straight lines because of low capillary pressure, which results in the straight line type of water cut rising curves in fractured-vuggy reservoirs.

Key words: forward modeling , reservoir prediction , connectivity , geological model , Guantao Formation