Abstract: The sweep efficiency of an oil reservoir plays a decisive role in the course of oil production and the ultimate recovery in a large heterogeneous oil reservoir with complex geological structure. The macro-heterogeneity of the reservoir and production technology affecting the sweep efficiency are very complex. It is very difficult to give a simulation description by equations. The refore, no simple and complex calculation model for the determination of the sweep efficiency of a heterogeneous reservoir has been derived till now. Based on a study of factors affecting the sweep efficiency of a heterogeneous reservoir thig paper presents a calculation model for the determination of such an efficiency by means of the theory of probability and method of dimensional analysis.

摘要： 对于地质构造复杂的大型非均质油田,油层作用波及系数对采出过程和最终采收率起着决定性作用.影响波及系数的油层宏观非均质和开采工艺因素十分复杂,难于进行仿真的公式化描述.因而,迄今尚没有一种完整而简便的非均质油层波及系数计算模型.本文在非均质油层波及系数影响因素研究的基础上,运用概率论和量纲分析方法建立了一种非均质油层波及系数计算模型.

关键词: 波及系数, 非均质油气藏, 概率, 计算方法, 数学模型