...单井平均日注水量 N—全油田注水井数，口 Q y —产油量，t/d C—注水系数，取C=1.01.2 B—注采比(injection-production ratio) f w —含水率，%（重量百分比） B 0 —原油体积系数 0 —地面原油密度，t/m 3 w —注入水密度，t/m 3 Q w —全油田所需的...
The production pressure differential can be increased and the injection-productionratio can be reduced by transferring from flowing to pumping.
利用自喷转抽提液方法，放大生产压差，降低注采比。
2
The method is presented to determine formation average pressure and boundary pressure with threshold pressure gradient and injection-productionratio.
给出了考虑注采比和启动压力梯度的平均地层压力和边界压力的确定方法。
3
To ensure prolonged stable high production, it is necessary to use a high injection-productionratio so as to ensure that enough water is injected into the main pay…