油泥调剖技术在中高渗砂岩油藏的应用

Application of Oily Sludge Profile-control Technology in Sandstone Reservoir With Medium-High Permeability

油田采出液中油泥成分复杂,有害物质超标,直接危害人类健康和生活环境。大部分老油田处在高含水期,注水效果逐年恶化,注水的利用率低,注入水沿高渗透通道突进,低渗透层未受到注入水波及。通过在中高渗砂岩油藏开展油泥调剖技术试验,实现了油泥的资源化再利用,改善了油藏注水开发效果,提高了采收率。

There are a large number of oily sludge in oilfield produced fluid,its composition is complex,and the harmful substances in it exceed standard,which directly endangers human health and living environment.Most of old oilfields are in high water-cut stage,the water injection effect is deteriorating year by year,and the water injection utilization rate is low.The injected water inrush along the high permeability channel,and does not spread to the low permeability layer.In view of the above problems,the oily sludge profile-con⁃trol technology experiments for sandstone reservoir with medium-high permeability were carried out.The oily sludge profile-control technology realizes the reuse of oily sludge,improves the water injection development effect of this type of reservoirs,and enhances the recovery efficiency.