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针对孤岛油田聚合物驱单元转后续水驱后,含水上升快,剩余油分布零散的特点,应用动态分析、油藏工程以及油藏数值模拟等方法对聚合物驱后剩余油分布规律及影响因素进行研究,指出厚油层顶部和压力平衡滞留区是剩余油的主要富集区,在此基础上系统开展聚合物驱后变形井网方式开采研究、水平井与直井组合井网方式开采研究,以期得到聚合物驱后进一步改善后续水驱开发效果的技术思路,为今后三采产量的稳定发展提供了理论依据。
Aiming at the characteristics of polymer flooding units in Gudao Oilfield after subsequent waterflooding, the water cut increases quickly and the residual oil is scattered. The dynamic distribution of oil after polymer flooding and its influencing factors are analyzed by dynamic analysis, reservoir engineering and reservoir numerical simulation It is pointed out that the top of the thick oil reservoirs and the pressure balance dwell area are the main enrichment areas of the remaining oil. Based on this, the research on the deformation well pattern mining after polymer flooding and the horizontal well and vertical well combination well pattern mining are carried out. The technical idea of further improving the development effect of water flooding after polymer flooding provides the theoretical basis for the stable development of the three-output in the future.