聚驱后油藏微观剩余油水驱启动方式及优化挖潜——以双河油田为例

Petroleum Geology and Engineering(2020)

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Abstract
对于聚驱后转后续水驱的油藏,搞清聚驱后微观剩余油启动方式和机理是进一步动用剩余油、提高采收率的关键.利用微观光刻仿真模型,开展周期注水、增大驱替压力梯度、液流转向三种水驱方式的微观驱油实验,明确了液流转向和增大驱替压力梯度可动用簇状和盲端状剩余油,能明显改善聚驱后开发效果.应用于聚驱后的双河油田核三段V油组上层系和川油组油藏,取得了较好的效果,为聚驱后提高采收率提供了依据和方向.
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