摘要
HFriGel是一种黄原胶、植物胶混合物的改性产品 常温下,HFriGel加入水中后不增黏.泵入地层中后,在地层温度及凝胶调节利的作用下,HFriGel逐渐增黏并进入地层中,完全凝胶后失去流动性形成类固体的凝胶,对地层起到封堵作用.HFriGel是一种地下凝胶的高摩阻凝胶暂堵剂,具有自适应、高摩阻、凝胶时间可控、易降解等特点.其凝胶速度可通过调节凝胶调节剂的加量来控制,可泵送时间从10～40 min可调.完井、修井作业结束后,HFriGcl凝胶在内置破胶剂的作用下自动降解解堵,其残渣率低于200 mg/L,远低于压裂液550 mg/L的标准要求.
HFriGel is a modified product of xanthan gum and vegetable gum.The plugging mechanism is the gel losing flowability and solidfying in the formation.HFriGel is a high friction gelation and temporary plugging agent with characteristics of high plugging effect,easily control of gelling time and degradation.The gelling time could be regulated by changing additives,while the pumping time is adjustable from 10-40 min.HFriGel can degrade under the action of gel breaker,and there was no more than 200 mg/L residue remained which was far below the standard 550 mg/L.
出处
《钻井液与完井液》
CAS
北大核心
2014年第1期50-53,99,共4页
Drilling Fluid & Completion Fluid
关键词
凝胶暂堵剂
凝胶时间
承压能力
破胶性能
Gelation temporary plugging agent
Gelling time
Bearing resistance
Gel broken
