摘要
研究了预交联硬颗粒和软颗粒堵剂在多孔介质中运移规律。结果表明,颗粒型堵剂运移规律主要表现为"顺利通过"、"破碎通过"以及"形成堵塞不能通过"等模式。小于孔喉的颗粒,由于粘弹性较好,吸水膨胀后,颗粒可发生形变,表现出"变形虫"特征,在注入水的驱动下,可以顺利通过孔喉;颗粒直径和孔喉相差较大的条件下,在驱动力较大,颗粒被破坏成更小的、与孔喉相匹配的颗粒。
The movement law of the rigid and soft precrosslinked particulate in porous medium was studied.The results indicate that the migration of particulate plugging agent has three modes which are successful pass,pass after crashed and formatting jam.When the particulate is less than pore throat,it can be distorted after absorbing water and successfully pass the pore throat under the driving of injecting water.When the particulate diameter is more than the pore throat,it will be crashed by the driving fore and then successfully pass the pore throat.
出处
《钻采工艺》
CAS
北大核心
2008年第1期121-122,142,共3页
Drilling & Production Technology
关键词
预交联颗粒
多孔介质
运移
机理
precrosslinked particulate,porous medium,migration,mechanism
