裂缝性火山岩油藏注水开发特征——以克拉玛依油田一区石炭系油藏为例

Features of Fractured Igneous Reservoir Water Flooding Development

克拉玛依油田一区石炭系油藏属低孔、特低渗透且裂缝发育的非典型双孔介质火山岩油藏。衰竭式开采产量递减大 ,采收率低。注水开发具有见效反应弱 ,含水上升快 ,水驱控制程度低的特征 ,注水后油藏能量得到补充 ,递减减缓 ,采收率提高 2倍多 ,注水开发取得了成功 ,其开采经验可为此类油藏的开发提供借鉴。

The anthracolithic reservoir in the 1st area in Karamay oilfield is a fractured and non-typical dual pore igneous reservoir with low porosity and permeability. depleting development mode has high decline rate and low oil recovery. Weak water flooding response ,high water rise speed and low water flooding reserves are the features of water flooding. Injected water supply the earth energy and release decreasing output, It is estimated that injected water recovery mounts to 15 percent,has increased by more than 200%. So production of injected water is successful.