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通过对国内、外水驱油藏开发有关资料的广泛、深入调研，总结了水驱油藏的开发特点、剩余油的分布规律和原油性质变化的特征；阐述了“水驱＋蒸汽驱”的采油机理。根据典型数模结果，水驱油藏应尽早转入蒸汽驱，并提出了适于蒸汽驱的油藏条件及选择的注汽方式。转蒸汽驱的水驱油藏，油井含水率最好低于９０％，油层厚度应大于６．１ｍ，孔隙度大于３０％，渗透率在０．２μｍ２以上，剩余油饱和度大于４０％。在注入热量和注汽时间相同情况下，先注高干度蒸汽可提高开发速度和经济效益。所得结论对我国油田开发有一定的现实指导意义。
Through extensive and in-depth investigation and research on the development of domestic and foreign waterflooding reservoirs, the characteristics of the development of waterflooding reservoirs, the distribution of remaining oil and the nature of crude oil properties are summarized. The characteristics of “waterflooding + steam flooding” Oil production mechanism. According to the typical numerical results, the water-flooding reservoirs should be transferred to steam flooding as soon as possible, and the conditions of the reservoirs suitable for steam flooding and the steam injection mode selected should be proposed. Steam-driven waterflooding reservoirs, oil well moisture content is preferably less than 90%, the reservoir thickness should be greater than 6.1m, porosity greater than 30%, permeability 0.2μm2 above, the remaining oil saturation greater than 40%. In the injection of heat and the same steam injection time, the first injection of high-dry steam can improve development speed and economic benefits. The conclusion has certain practical guiding significance for the development of China’s oilfield.