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推导和筛选了两种逐年计算水驱油田可采储量的公式。一种是适用于水驱层状油田的方法五水驱特征曲线及相应的逐年计算可采储量公式;另一种是适用于底水灰岩油田的方法九水驱特征曲线及相应的逐年计算可采储量公式。这两个公式大大简化了已有的逐年计算水驱油田可采储量的方法,因而有很大的实用价值。算例表明计算结果是可信的。
Two formulas for calculating recoverable reserves of water-driven oil fields are deduced and screened year by year. One is the method applied to waterflooding layered oilfield waterflooding characteristic curve and the corresponding recalculated recoverable reserves formula; the other is suitable for the bottom water limestone method nine waterflooding characteristic curve and the corresponding year by year calculation Recoverable reserves formula. These two formulas greatly simplify the existing method of calculating the recoverable reserves of water-driven oil fields year by year, and thus have great practical value. The example shows that the calculation result is credible.