摘要
在常规酸化施工中,由于酸岩反应速度快,酸的穿透距离短,只能消除近井地带的伤害虽然提高酸的浓度可增加酸穿透距离,但又产生严重的泥砂及乳化液堵塞,给防腐蚀带来困难,尤其是高温深井常规酸化的增产有效期通常较短,砂岩经土酸处理之后,由于粘土及其它微粒的运移易堵塞油流通道,造成酸化初期增产而后期产量迅速递减的普遍性问题。
In acidizing treatment proc ess,quick acid -rock reaction and short penetration distance can only be able to remove near wellbore damage.If acid concentration and enetration distance are increased,silt and emulsion will be block up formation,result in difficult anticorrosion.In view of these defects,the dispensations of acidizing system are optimized, forming different dispensations can be adaptable to different reservoir.So these syetems can broaden acid radius,lift oil permeability and attain the high acidific goal.
出处
《石油化工应用》
CAS
2011年第9期9-11,15,共4页
Petrochemical Industry Application
关键词
砂岩
酸化
增产
sandstone
acid
increase production
