三重介质油藏垂直裂缝井椭圆流试井模型研究

摘要

Based on the concept of elliptical flow, a test model was established and solved for finite conductivity vertical fractured well in triple media reservoir with consideration of elliptic seepage. Pressure transient curve was drawn, and the curve was divided into seven different flow regimes according to the characteristics of the curve. Influence of vug interporosity flow coefficient, matrix interporosity flow coefficient, vug storage ratio and natural fracture storage ratio on the pressure curve was analyzed. The results obtained can provide scientific basis for reasonable analysis of well test interpretation in triple media reservoirs.%基于椭圆渗流的概念，建立并求解了三重介质油藏有限导流垂直裂缝井椭圆渗流试井模型。绘制了压力动态曲线，针对试井曲线的形态特征，将其分为7个不同的流动阶段，最后分析了溶洞窜流系数、基质窜流系数、溶洞储容比及天然裂缝储容比等参数对压力动态曲线的影响。研究结果可为三重介质油藏的试井解释提供科学依据。