The results indicated that YG340 - 1 could flocculate with the polymer remained in core and had good plugging effect. The suitable YG340 - 1 concentration was 3 % - 5 % in field application.

• 试验结果表明,YG340-1聚合物再利用剂可与岩芯中残留聚合物絮凝,具有较好的调剖封堵效果,且聚驱后注入YG340-1越早越好,现场施工中,YG340-1含量以3%25-5%25为宜。