在聚合物驱油过程中,聚合物溶液并不能进入油层岩心的全部连通的孔隙体积,剩余部分由不含聚合物的水所占据。这部分剩余孔隙体积,称为聚合物不可进入的孔隙体积,简称不可进孔隙体积。试验表明,天然岩心中通常有20％以上的连通孔隙体积是聚 During polymer flooding, the polymer solution does not enter the entire interconnected pore volume of the core of the reservoir and the remainder is occupied by the polymer-free water. This part of the remaining pore volume, known as the polymer can not enter the pore volume, referred to as not into the pore volume. Experiments have shown that typically more than 20% of the interconnected pore volume in a natural core is poly