摘要
埕岛油田东营组属于海上低渗透区块,在多年以来的作业过程中,储层伤害严重。通过一系列的室内试验,找出该储层潜在伤害因素主要为水锁和贾敏效应引起的水伤害,其次为粘土矿物膨胀引起的水敏伤害。针对不同的伤害因素,确定了作业入井液中的添加剂种类,并对添加剂进行优选,得到一种低伤害入井液。此作业入井液可将综合伤害率控制在10%左右,油层保护效果非常明显。
Dongying formation of Chengdao oil field lies in the onshore, low permeability blocks. Reservoir damage is serious in the process of development over the years. A series of laboratory tests show that the potential reservoir damage factors are the water damage caused by wa- ter locks and Jamin action and the water sensitivity damage caused by clay mineral swelling. According to the different damages, we have determined the additive type of the well liquid and optimized the additives to get a kind of low damage well liquid. This well liquid could control the integrated damage rate at about 10% and its oil reservoir protection effect is obvious
出处
《广东石油化工学院学报》
2013年第6期12-15,共4页
Journal of Guangdong University of Petrochemical Technology
关键词
埕岛油田
敏感性
低伤害入井液
Chengdao oil field
sensibilities
low damage well liquid
