聚合物驱相渗曲线特征

采用非稳态法,测量了聚合物相渗曲线,引进对"J.B.N"实验中处理数据的改进,与水驱曲线进行对比。结果表明,聚合物驱时油相相对渗透率曲线较水驱时有所升高,油相相渗端点值右移;聚合物驱时水相相对渗透率曲线比水驱时低,水相相渗端点值略有降低;相渗交点值右移且降低;聚驱时,无水采收率较水驱时高,前缘水相突破后,含水上升快。结果反映了聚合物驱过程中多相渗流规律,为聚合物驱的数值模拟、动态预测和效果评价提供了重要参数和基础依据。

Experimental study on relative permeability curve of polymer flooding

Unsteady method has been applied to measure the polymer flooding relative permeable curve.The so called "J.B.N" experimental data has been improved and compared with water flooding.The result shows that the oil curve ascends while the water curve descents compared with water flooding,end point of oil curve moves rightwards while the water curve lower than water flooding,the end point of water curve is lower,the cross point of relative permeable curve moves left ward and descends.The breakthrough recovery of polymer flooding is much higher than water flooding,when the polymer solution breakthrough,the water cut increases rapidly than water flooding.The result reflects the flow regular pattern of polymer and oil flooding,this paper provides important parameters and reference for the numerical simula-tion,performance prediction and effect evaluation of polymer flooding.