疏松砂岩油藏油井出砂量预测模型及应用

A Mathematic Model for Predicting Sand Production in Unconsolidated Sandstone Reservoirs and Its Application

在研究油井出砂机理的基础上,根据液固多相渗流条件,应用库仑摩尔破坏准则和达西公式,导出了关于疏松砂岩油藏不同产液量下油井出砂量预测的数学模型。以盘二油田为例,进行了出砂预测,与实测含砂比相比,平均误差小于0.0052%。实例应用表明所给的数学模型是可行的。

On the basis of studying the mechanism of sand production,a mathematic model is derived for predicting the well sand production under different liquid producing capacities in unconsolidated sandstone reservoirs,by using Coulomb-Mohr failure criterion and Darcy's law according to the theory of multiphase liquid-solid filtration.The sand production is predicted by taking Pan 2 Oilfield for example.The result is correlated with measured sand production ratio with average error less than 0.0052%.The application of example shows that the mathematic model is feasible.