Box-Behnken法研究底水油藏直井底水锥进影响因素

 底水锥进是影响底水油藏开发效果的重要因素。用某实际油藏资料建立了底水油藏的数值模型，在综合考虑各种影响底水锥进的单因素基础上，设计底水锥进影响因素的无因次参数群，应用数值模拟计算的累积产油、产水和产液量回归俞启泰水驱特征曲线，以求得反映直井见水特征的参数b（水驱特征曲线斜率）。以参数b 为研究对象，运用Box-Behnken 试验设计，通过曲面反应法研究不同因素对b 值的影响，并得出各影响因素对底水锥进的影响显著性、影响顺序和影响趋势。

Research of Influence Factors for Vertical Wells Bottom Water Coning Using Box-Behnken Method

Bottom water coning is a critical issue in the development of oil reservoirs containing bottom water. A numerical model is built in this study for a bottom-water reservoir using realistic reservoir parameters. In consideration of the individual factors that impact bottom-water coning, clusters of the dimensionless indices are designed. The Yu Qitai water flooding type curves are generated by regression analysis using the cumulative oil, water and liquid productions from numerical simulation; The index b (slope of the water flooding type curve) that reflects the water breakthrough characteristics in the vertical well is calculated. Factors that influence b are then investigated in details using the Box-Behnken experimental design and the responsive surface method. The severity, order, and trend of the influence by each factor are finally examined.