卫城油田卫10块低渗富集小断块中高含水期层间挖潜研究

InterLayer Potential Tapping Research to Small Enriching Fault Block with Low Permeability in High Water Cut Stage of Wei 10 Block in Weicheng Oilfield

针对卫10块已进入中高含水开发期,区块综合含水上升快,自然递减居高不下等问题,在地层精细对比、构造精细解释、沉积微相、储层综合评价、剩余油分布规律研究的基础上;通过以中部封堵、拉大注采井距,边部加强平面及层间动用为主要治理方向的实施,提高了注入水利用率,提高区块分层动用程度,控制了区块含水上升速度,改善注水开发效果,探索出了一套适合中高含水期低渗透复杂断块油田剩余油挖潜治理的方法。

According to the problems such as rapid increasing of total water cut of block and high natural depletion,based on fine correlation of strata and fine structure elucidation deposition microfacies and comprehensive evaluation to reservoir and research to remaining oil distribution method,the method of formation sealing in middle part and enlarging injector producer distance and strengthening horizontal and interlayer development in margin are used as main treatment which improve injected water utilization ra...