堵水调剖技术应用及效果评价

Application and Effect Evaluation of Water Shutoff Profile Control Technology

姬塬油田为超低渗透油田,油层物性差,非均质性强,微裂缝发育,注入水很容易沿裂缝窜进,该方向上的采油井易水淹,导致油藏含水上升快,短时间内进入高含水阶段。近年来,采油八厂根据油田开发的需要,引进了注水井调剖的工艺技术,在原有的研究基础上,结合自身储层特点与裂缝水窜特性,制定该区块特征的堵水调剖体系,在定边采油作业区实施注水井阳56-58的堵水调剖作业,达到了良好的控水增油效果。

Jiyu Oilfield is an ultra-low permeability oilfield.The oil layer is poor in physical properties,strong heterogeneity,micro-crack development,and water injection is easy to penetrate along the crack.The oil well in this direction is easy to flood,resulting in rapid increase of water content in the reservoir.,into a high water-containing stage in a short time.In recent years,according to the needs of oilfield development,the No.8 Oil Production Plant introduced the technology of profile control of water injection wells.Based on the original research,combined with the characteristics of its reservoir and the characteristics of fracture water,the water shutoff profile of the block was developed.The system implements the water shutoff and profile control operation of the water injection well 56-58 in the fixed-edge oil production operation area,achieving a good water control and oil-increasing effect.