确定油井生产时间新方法

A new method of defining production time of oil well

王建君 熊钰 伍桂花 殷先平

西南石油大学研究生院，四川 成都 610500 江汉油田分公司江汉采油厂，湖北 潜江 433123

根据油藏物质平衡方程式，利用微积分思想，将油井变产量生产时间，转化为容易计算的、稳产方式下的油井生产时间，从而建立油井生产时间模型，并对模型求解，得到生产时间与压力的函数关系。应用该油井生产时间模型，计算江汉油田某一油藏的生产时间，其结果表明与实际生产时间误差很小，预测精度较高。

Based on the equation of material balance of reservoir, this article transforms the question of variable production rate into the
question of production time of oil well, which is easy to calculate at stable production. A model of production time of oil well has
been established through using calculous idea in terms of the study result. Through finding the solution of the model, the functional
relation of production time and pressure has been obtained. This model is applied in Jianghan Oilfield to calculate the production
time of the reservoir. The results show that the error is small compared with the real production time and the precision of prediction
is high.