国内某海上的油田典型块状底水油藏大部分井已经出现底水锥进现象,改善该油田的高含水井开发效果,控制直井底水锥进和水平井底水脊进成为油田稳产的关键。为了有效实施氮气泡沫稳油控水提高采收率技术,以该油田一口井为例,开展氮气泡沫稳油控水注采数值模拟研究,在历史数据拟合的基础上,对氮气泡沫稳油控水注采参数进行了优化设计,为工艺方案实施提供技术支持。氮气泡沫稳油控水最佳注采参数为,注入方式为连续注入、注气量为45×10⁴m³、气液比为1：1、焖井时间3d、焖井后最佳产液量900m³/d。

The oilfield studied in this paper is a typical block bottom water reservoir. The whole oilfield is in a high water cut stage. Most wells are water-coning production wells, so the key to maintain a stable oil output in the high water cut period is how to control the water-coning . We take one well of the oilfield as an example, to study the nitrogen foam stabilizing oil production and controlling water cut technologies with the numerical simulation method to provide technical support for the process scheme implementation. On the basis of historical data matching, the injection and production parameters of the nitrogen foam stabilizing oil production and controlling water cut technology are optimized. The results show that the optimum injection and production parameters are as follows: continuous infiltration with injection volume of 45×10⁴ m³, gas-liquid ratio of 1:1, shutdown days of 3 days, and daily fluid production rate of 900m³/d.