聚合物驱开发指标预测方法研究

在聚合物驱开发指标预测过程中,目前采用的方法大多是"定液求含水"的方法,但是实际生产中产液量并不是恒定不变的.该文通过将广义翁氏预测模型及反正切函数预测模型应用到聚合物驱开发指标预测中,分别对产油量及含水率进行预测,然后预测产液量、产水量、累计产油量、累计产液量以及累计产水量等开发指标.该方法克服了"定液求含水"的局限性.应用本文提出的方法对大庆油田北一二排西部聚合物驱工业化区块进行了预测,结果表明,预测精度能够满足现场的需要,具有一定的应用价值.

Prediction method for development index of polymer flooding

At present,in the process of predicting development index of polymer flooding,the method of "calculating water cut with fixed rate of fluid"is used widely,however,fluid production is not invariable in practice.In this paper,generalized Weng's prediction model and arc tangent function prediction model are applied in development index prediction to predict oil production and water cut respectively,and then predict development indexes including fluid production,water production,cumulative oil production,cumulative fluid production and cumulative water production.This method overcomes the limitation of the method of "calculating water cut with fixed rate of fluid".The polymer flooding industrialized block in western Bei 1-2 well row of Daqing Oilfield is predicted using this method in the paper.Result shows that,prediction accuracy can satisfy field requirements and have a certain application value.