摘要
含水上升规律是水驱油田的主要规律，含水上升率是评价水驱油田开发效果的重要指标，是制订开发技术政策的重要依据，因此只有正确地认识油田含水上升规律，才能为油田的开发调整决策提供科学合理的依据。目前研究含水上升规律主要分童氏图版和相渗曲线2种方法，在实际运用中发现2种方法均存在一定的局限性．在充分结合油田矿场统计及实验资料的基础上，利用改进童氏图版及相对渗透率曲线2种方法，探讨低渗透油藏的含水上升规律，并通过典型油藏实践论证，2种方法均具有良好的适用性，对矿场应用和理论研究以具有一定的借鉴意义和指导价值。
Water cut increasing law is the main law for water-drive oilfields. The increasing rate of water cut is an important index to evaluate the development effect of water-drive oilfields, and it is also an important basis for making technical policies of oilfield development. Therefore, only if we correctly understand the law of water cut increasing in oilfields can we provide scientific and reasonable foundation for adjusting policies of oilfield development. Currently, there are two major methods for studying water cut increasing laws： the Tong＇ s chart and the relative permeability curves. In actual applications, it has been found that both the two methods have some limitations. On the basis of fully combining oilfield statistics and the laboratory data, the modified Tong＇ s chart and the relative permeability curves were utilized to analyze the law of water cut increasing in low-permeability reservoirs. Both the two methods have good applicability, which has been demonstrated by typical oil reservoirs. They have certain reference and guidance values for field application and theoretical research.
关键词
低渗透
含水率
含水上升率
采出程度
童氏图版
相渗曲线
采收率
low permeability reservoir
water cut
water cut increasing rate
recovery percent of reserves
Tong＇ s chart
relative permeability curve
recovery efficiency
