针对油藏模拟的高精度快速计算需求,本文将特征正交分解方法应用于对油藏模拟控制方程的降维处理,建立了油藏单相流的POD低阶模型.在90个算例中,对渗透率均匀/非均匀分布、各向同性/各向异性等情况,所建立的油藏单相流POD模型的计算结果相对于有限差分法计算结果的偏差在10-6～10-3量级范围内,计算时间约为有限差分法的1/3000～1/9000.“,”For demands of high-precision and fast calculation in reservoir simulation,proper orthogonal decomposition method is applied to reduce the degrees of freedom for governing equations of reservoir simulation.A reduced-order model for single-phase reservoir flow is established.Model results are compared in 90 cases with uniform/non-uniform,isotropic/anisotropic permeability.Relative deviations of POD results from finite difference (FDM) results are in the magnitude of 10-6 ～ 10-3.Computational time of the POD reduced-order model is about 1/3000～1/9000 of that of FDM.