摘要
基质酸化中 ,泡沫因其污染小且有助排的作用而成为一种很好的酸液分流剂。通过对泡沫分流机理的分析 ,结合泡沫在多孔介质中的流动以及泡沫控制流度的机理分析 ,考虑分流前后气相饱和度的差异 ,引入圈闭因子的概念 ,提出了考虑圈闭效应的一种新的泡沫分流数学模型 ,可以通过此模型来预测泡沫的分流效果。并通过计算实例给出了计算方法 ,得出两条结论 :泡沫注入量有一最佳值 ;
By analysis of foam diverting mechanism and foam flow in porous media, trapping factor considering different gas saturation before and after diverting has been established, on the basis of which, a new foam diversion model has been developed. Algorithm is obtained in example calculation. Results have show that injection amount of foam exits an optimum value and trappingfactor is the most important parameter in foam diverting.
出处
《西南石油学院学报》
CSCD
2003年第3期69-72,共4页
Journal of Southwest Petroleum Institute
关键词
分流
泡沫
临界毛管压力
临界饱和度
圈闭因子
fractional flow
foam
capillary pressure
critical saturation
trapping factor
