A new prediction method of reservoir porosity based on improved Kriging interpolation

Abstract

In the process of oil and gas field development, the pore characteristics of reservoir are the main factors that affect the reservoir capacity and production efficiency. The physical property parameters and pressure distribution of layers have changed greatly, and the pressure system of multi-pressure layer is formed underground of multi-layer reservoir and heterogeneous sandstone oil reservoir after water injection and chemical injection. Accurate prediction of reservoir physical properties and formation pressure distribution after changes is significance for efficient production and safe operation of reservoirs. In this paper, based on geostatistics theory and percolation mechanics theory, combined with reservoir geology, drilling, development and testing data of Bohai Oilfield, the prediction method of reservoir porosity based on improved Kriging interpolation and effective thickness has been established. This prediction method can provide certain guidance for the formulation of oilfield injection and production distribution plans at the oilfield and the shut-in and adjustment plans for injection-production wells during drilling and completion operations.