萨北开发区水驱开发指标预测的一种新方法

A new method of predicting indexes of water drive development at Sabei development area

将丙型水驱特征曲线与指数递减预测模型相结合,提出了一种预测水驱油田进入递减阶段开发指标的联解法,该方法克服了丙型水驱特征曲线和指数递减预测模型在动态预测中各自存在的缺点,即丙型水驱特征曲线不能预测开发指标与开发时间的关系;指数递减预测模型法不能预测油田的含水率、产液量、产水量及累积产水量和累积产液量。同时应用该联解法对萨北开发区北三东区块基础井网开发层系水驱开发指标进行预测,结果表明此方法是实用有效的。

By integrating Type C water-drive characteristic curve with the exponential decline forecast model,one method of resultant is presented,which predicts the development inde- xes during the decline period of water-drive oil field.The method overcomes respective faults of Type C water-drive characteristic curve and the exponential decline forecast mod- el in dynamic prediction.The faults include that Type C wa- ter-drive characteristic curve cannot predict the relations between development indexes and development time.and the exponential decline forecast model cannot predict the water cut,produced liquid capacity,water yield,cumulative water yield and cumulative liquid production.Meanwhile.the method of resultant is adopted to predict the water drive de- velopment indexes of the layer series of development among the basic well pattern at Sabei development area.Results suggest that the new method is practical and effective.