关键词: 非均质油藏, 渗透率, 油藏工程, 渗透率合成方法, 渗流模型

Abstract: The permeability synthesis method is often used in reservoir-engineering researches such as calculating oil reserve, making oilfield development plan and numerically simulating reservoir, and includes permeability syntheses of different vertical formations and different permeable zone along with the fluids conducting directions. On the basis of the Darcy's law and the established seepage flow model, two composite formulas of permeability were derived with mathematic calculation. The composite formula of permeability in vertically different strata was obtained according to the flow superposition theory. Adding up all pressure drops derived the composite formula for different permeable zone. According to the petroleum geology and exploitation, the examination of actual data obtained in laboratory experiment was made. The calculated error of the new formula is in the range of 0.28% to 5.35%, which is basically within the permissible error range.

Key words: heterogeneous reservoir, permeability, reservoir engineering, permeability synthesis, seepage flow model