王西采油管理区控递减保效技术对策研究

On Decline Control Technology in Wangxi Oil Production Management Area

王西采油管理区所辖的中区潜4~3、北区、周8、中区上段和北断块等区块,均已进入开发中后期,井况损坏严重,井筒环境日趋复杂,自然递减逐年加大。在新井和措施投入力度大幅缩减的情况下,基于老区剩余油精细研究,利用精细注水结构调整,强化注水井动态调配,提高了油藏水驱动用程度,有效降低老区自然递减率;深化地质认识,精细油藏管理,提高油田采收率。

The blocks including Qian 43 of central section,North District,Zhou 8,upper central section and northfault block in Wangxi Oil Production Management Area have entered the middle and later periods of development,where well conditions are severely damaged,wellbore environment is more complicated and natural decline increase yearly.Aiming at sharply reduction of new wells and measures input and on the basis of fine research on remaining oil in maturing area,it is necessary to make use of fine waterflooding structural adjustment and enhance injection well performance regulation to improve producing degree of reservoir waterflood and effectively control natural decline rate.It is also necessary to deepen the geological knowledge and implement fine reservoir management to enhance oil recovery.