四川盆地苏码头构造储层保护技术

Reservoir protection technique for Sumatou structure in Sichuan Basin

针对四川盆地苏码头构造偏强水敏储层易产生水敏、液锁等储层损害现象,利用油气井储层损害实验及矿场评价方法,分析了油气井储层损害主要因素及机理,进行了油气井开发前期钻井、固井、射孔、试油、储层改造以及采气过程中的储层损害类型研究,提出了相应的储层保护技术,并探索出适合四川盆地苏码头构造储层保护的配套技术。现场应用取得了较好的效果,对四川盆地油气田开发起到了指导作用。

Sumatou structure in Sichuan Basin is a strongly water-sensitive reservoir and prone to fluid locking.The main factors and mechanism of reservoir damage are analyzed through experiments and field evaluation.The types of reservoir damage are studied for processes of drilling,cementing,perforating,oil testing,stimulation treatment and gas production,and corresponding reservoir protection techniques are presented.Field application of the reservoir protection techniques has been successful.This may guide future oil and gas field exploitation in Sichuan Basin.