LPS体系深部调剖油藏适应性的数值模拟

Numerical simulation of reservoir adaptability for LPS deep profile control

建立了LPS交联聚合物溶液体系深部调剖封堵模拟模型 ,用数值模拟方法研究了LPS体系对油藏渗透率和储层非均质性的适应性 .结果表明 ,随着油层平均渗透率的增大 ,采用LPS体系调剂时 ,油层的采出程度逐渐降低 ,在同一平均渗透率下 ,不同渗透率变异因数油藏的LPS体系驱替的采收率差别很小 ;对于平面非均质层 ,LPS体系驱替的采出程度随着渗透率变异因数的变化是非单调的 ,中间出现一个峰值 ,该数值在渗透率变异因数为 0 .6 0到 0 .80之间 ,为采用LPS体系提高采收率的最佳点 .

The sealing model for linked polymer solution (LPS) deep profile control is constructed. The numerical simulation method is used to study the adaptability of LPS to reservoir permeability and non-homogenous. The results show that the LPS recovery efficiency decreased with the increase of mean permeability. Under the same permeability, the oil recovery efficiency with LPS is almost the same for different permeability factors. The oil recovery efficiency with LPS nonlinely changed with permeability factors for area none-homogenous layer. A peak which is an optical point of oil recovery efficiency with LPS appeared between 0.6 and 0.8.