Facies-controlled model for predicting reservoir parameters of between wells

Physical properties of sandstone reservoirs have close relations with sedimentary microfacies under the conditions of no strong epidiageneses. Using sedimentary facies control of reservoir physical properties, the paper puts forward a facies-controlled model to predict physical property parameters of sandstone reservoirs between wells and to research sandstone thickness as well as lateral distribution of reservoir porosity and permeability by building a model of reservoir physical property parameters. The essence of the method is to achieve parameter prediction between wells with geological control, that is, the data of soft information of reservoir parameters (not 100% certainty) extracted from the geological information of sedimentary facies between wells are used as the supplemented controlling condition between wells to predict reservoir parameters between wells together with well-site data. The method is suitable for the reservoir discription without enough well data and is a practical and technical method of reservoir discription.