特高含水后期矢量开发调整技术研究及应用

针对胜利油区整装油田特高含水后期油藏开发面临层间干扰严重、井网不完善、驱替不均衡的问题,基于油藏工程理论和数理优化方法,攻关研究整装油田矢量开发调整提高采收率技术,建立了一级层间矢量层系重组、二级平面矢量井网重整到三级注采优化调整的矢量开发调整技术。该技术具备井网形式灵活、老井利用率高、投资成本低的特点。应用实例表明,该技术控水稳油、降本增效作用明显,有利于实现特高含水后期油田进一步提高采收率。

Research and Application of Vector Adjustment Development Technology in Ultra-high Water Cut Stage Reservoirs

Considering the actual conditions of ultra-high water cut stage integrity reservoirs in Shengli oilfield, which are facing the development problems of serious interlayer interference, imperfect injection and production pattern and imbalance displacement. Based on the reservoir engineering theory and Mathematical optimization method, a technology to enhance oil recovery of ultra-high water cut stage integrity reservoirs has been proposed herein. The technology includes three techniques, which are first adjustment of vector Layer recombination, second adjustment of vector well pattern reorganization and third adjustment of vector injection-production optimization. The new technology has a lot of advantages including flexible well pattern, high utilization of old wells, low investment cost. The application shows that the technology has obvious effect in stable oil production, water cut control, lowering cost and improving efficiency, which is of significant value for field application in the ultra-high water cut stage integrity reservoirs.