红河油田分段压裂水平井化学堵水模型评价及参数设计

Evaluation and design for the model and parameters of chemical water plugging of segmented fracturing horizontal well in Honghe oilfield

红河油田长8、长9油藏采用水平井分段压裂开发方式,相比直井单井产量大幅提高,但由于水平井含水上升导致了产油快速下降,寻求一种适合红河油田水平井油藏及井况特点的化学堵水模型对提高高含水井治理效果至关重要。通过分析红河油田水平井出水原因及类型,明确了水平井出水特点,并建立了水平井化学堵水模型;通过室内实验评价及实验结果,设计出化学堵水最佳参数,为红河油田水平井治理提供了技术思路和方法。

Chang 8 and Chang 9 reservoir of Honghe oilfield with development mode of horizontal well staged fracturing, the single well output is greatly declines compare to plumb shaft, but the well output is rapid declines due to rise of horizontal well water.To find a suitable model of chemical water plugging is very important to improve the governance effect of high water wells for the reservoir and condition characteristic of Honghe oilfield horizontal well.Through the analysis of Honghe oilfield horizontal well water types and causes,the water-producing features of horizontal well is explicit and its model of chemical water plugging is established.Through the experimental evaluation and experimental results, the best parameters are designed to chemical water plugging and the ideas and methods are provided for the treatment of Honghe oilfield horizontal well.