A quantitative relationship between the recovery percent of recoverable reserves and the cumulative injected times of pore volume was derived for water-drive oilfields based on Lifecycle Theory and Logistic Growth Law. According to the distribution of remaining recoverable oil in various layers, a method to allocate injection volume for separate layers in water-injection wells was developed, which is suitable for the heterogeneous oilfields that are stabilized in water drive and in the preliminary stage of middle or high water cut. Its pilot application in Bohai oilfields has shown that its injection allocation is better in decreasing water and in-rncreasing oil. Compared with the conventional injection allocation on layer thickness, this injection allocation can intentionally increase injection volume for layers with more remaining oil, and improve the sweep efficiency of water flooding. Therefore, this method is very valuable for the offshore oilfields containing long sand-control sections and in the preliminary stage of middle-high water cut.%从生命旋回理论和Logistic增长规律出发,推导了水驱油田可采储量采出程度与累计注入孔隙体积倍数之间的定量关系；按照小层剩余可采储量分布规律,提出了基于剩余油分布的分层调配注水井小层配注量计算方法,该方法适用于中、高含水初期的稳定水驱油田.渤海油田先导试验表明,该方法具有较好的降水增油效果；与以往按照厚度进行配注相比,该方法可以有针对性地增加剩余油富集小层的注水量,扩大注水波及系数,对于海上大段防砂、处于中高含水初期的油田具有很好的推广应用价值.
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