摘要
本文介绍了一种新开发的油井选择性堵水用的活性稠油，报导了室内研究、现场试验及应用结果。该活性稠油具有堵水效果好，选择性强，堵水有效期长等特点，适用于砂岩油藏油井堵水。
The effectiveness of water controlling in producing wells by viscous crude is dependent. in particular, upon the crude and emulsificator selected. This paper presents a compounded emulsificator, namely C-911, consisting of a Span type surfactant, polymer PAM and other ingredients for activating crudes of viscosity 300-1500mPa.s.The C-911-treated crude readily forms stable emulsions in wide oil to water ratios and is significantly enhanced in viscosity (up to 5-6 times) as to prevent or reduce the flowing out of formation water The viscosity properties. standing stability, core plugging capacity and selectivity in water contorl are meseared. In pilot and field uses in 55 wells following results are obtained: successfulness 95%; effective time of water control 67-275 days(136 days in average for 51 wells); total cost per a operation 5 times as less as if a gelling water-plugging fluid is used.
出处
《油田化学》
CAS
CSCD
北大核心
1995年第1期41-43,46,共4页
Oilfield Chemistry
关键词
采油井
堵水
稠油
Viscous Crude,Activated Visocus Crude, Emulsions of Viscous Crude, Water Plugging in Producing Wells,Research and Development, Field Uses,Liaohe Oil Fields
