线性水驱特征方程的实证及应用

实证研究是水驱特征方程现场应用的基础。在室内实验的基础上,对现有线性水驱方程进行了优选,提出采用包络线切线法预测可采储量增长趋势。该方法对所有历史数据呈现良好的线性关系,预测的半对数水驱曲线符合数值模拟结果,即呈现反“S”形特征。油田开发始终是在人们的干扰下进行的,系统特征始终在变化,利用包络线切线法能更好描述油藏的当前状态与特征。现场实际资料分析表明,利用该方法分析评价水驱油田开发措施效果是可靠的。

The Empirical Study and Application of Linear Water-Drive Characteristic Equation

The basis of the application of water-drive characteristic equation is the empirical research.This method shows the better linear relationship to the whole historical data.The forecasted semi-logarithmic water-drive characteristic curve is in accordance with the result of numerical simulation.By means of this method,the status and characteristics of an oil field development could be better described.This paper presents an optimum to the current linear water-drive characteristic equations and puts forward a method for forecasting the incremental trend of recoverable reserves with envelope-tangent approach.The case study shows that this method is reliable for evaluating the effect of stimulation in a waternood oil field.