低渗透油田油层伤害机理及保护措施研究

The Study of Oil Reservoir Injury Mechanism and Safeguard of the Low Permeable Oilfield

低渗透性油田储量广泛 ,在油田开发中起着举足轻重的作用。运用矿物分析及流动试验对低渗、特低渗储集层损害机理进行分析 ,认识到水敏是这类油藏开发中的主要伤害因素 ,并针对不同的伤害情况 ,给出了屏蔽暂堵、防膨技术、水锁解除技术、其它解堵技术、入井液精细管理等不同的预防和治理措施 ,并对国内此类油田的开发起到一定的借鉴作用。

The low permeable oil field is a very important problem in the oil field development.This paper analysis injury mechanism of low permeable and ultra low permeable formation by mineral analysis and flow experiment.The water sensitivity is the essential factor for this kind of reservoir.According to different injury,this paper gave out screening diverting,anti-expansion,formation entering liquid manage and some other methods for the treatment.