摘要
残留聚合物性能变化主要是指分子量和水解度的变化。聚驱后地层大量残留的聚合物是以低分子量高水解度的形态存在的。利用聚合物与絮凝剂作用后的沉降体积评价聚合物性能变化对再利用的影响。研究表明,聚合物分子量降低,水解度升高或者两者同时变化,沉降体积均减小,但是仍有很高的保留率。这说明分子量降低和水解度升高的聚合物仍可以再利用,即残留聚合物与絮凝剂作用产生絮凝体封堵大孔道,达到深部调剖作用。
The function variations of polymer remained mainly include the variations of molecular weight and degree of hydrolysis. A great quantity of polymer remained in the formation exists in the forms of low molecular weight and high degree of hydrolysis. Using subsidence volume from common action of polymer and flocculating agent, evaluated the effects of function variations of polymer remained on reutilization. The study results show that the subsidence volume has been a decrease along with the molecular weight dropping, the degree of hydrolysis rising or both varying, but it still has high reservation rate. This testified that the polymer remained in the formation still can be reutilized, namely flocs unit produced by interaction of polymer remained and flocculating agent block off high-capacity channel to achieve the goal of deep profile control.
出处
《钻采工艺》
CAS
北大核心
2006年第5期94-96,共3页
Drilling & Production Technology
基金
中国石油化工有限公司重点攻关项目"聚合物驱接替技术优化与组合"的部分内容
编号P03048。
关键词
聚合物驱
提高采收率
聚合物再利用
调剖
絮凝剂
polymer flooding,enhanced oil recovery, polymer reutilization, profile control,flocculating agent
