华庆油田白239区油井见水类型及治理对策
Water Breakthrough Types of Oil Wells in Bai239 Area of Huaqing Oilfield and Its Control Countermeasures

华庆油田白239区于2009投入开发，主力开发层系为延长组长6₃层。开发井网采用斜直井 + 水平井组合部井方式，其斜直井开发区采用反九点注采井网，水平井开发区采用七点与五点法注采井网。随着开发时间的延长，累计采出体积及注水量的增加，油藏地下油水分布日趋复杂，油井含水上升较快，尤其是斜直井 + 水平井综合部井开发区，水平井含水上升乃至水淹对区块影响更大。水平井水淹后则周围若干注水井需要关停，储量率就会下降，油田稳产基础就会变差，因此对生产形势带来严重的影响。本文对白239区开发中的突出问题即油井含水上升快、高含水井增加迅猛，进行了认真的分析总结，并结合油井生产实际提出了控水稳油的针对措施。
Bai239 area of Huaqing Oilfield was developed in 2009. The main development layer is Chang 6₃ of Yanchang formation. The development well pattern is the combination of slant vertical well and horizontal well. The development area of slant vertical well is the reverse nine-point injection-production well pattern, and the development area of horizontal well is the seven-point and five-point injection-production well pattern. With the extension of development time and the increase of cumulative production volume and water injection amount, the distribution of under-ground oil and water is becoming more and more complex, and the water cut of oil wells rises rapidly. Especially in the development area of inclined vertical wells + horizontal wells, the influence of water cut rising and even water flooding in horizontal wells on the block is greater. When the horizontal well is flooded, the reserve rate will drop and the stable production base will become worse, so it has a serious impact on the production situation. According to the prominent problems in the development of Bai239 area, that is, the water cut of oil well rises quickly, and the high water cut well increases rapidly, this paper makes a serious analysis and summary, and puts forward the corresponding measures for controlling water and stabilizing oil well according to the actual production of oil well.