基于高速非达西渗流新模型的试井分析

基于高速非达西渗流新模型，建立了考虑井筒储存和表皮系数的均匀介质和双重介质试井模型，并采用有限差分求解。结果表明，无论是均匀介质还是双重介质，考虑高速非达西渗流后，压力曲线上移，压力导数曲线驼峰高度增加并后移，水平段出现的时间延迟。与Forchheimer 模型相比，新模型的上升幅度要小。Kmr 和τD 是决定曲线形态的重要参数，随着τD 增大和Kmr 减小，压力导数曲线驼峰高度增加幅度增大，压力曲线上移幅度增大。阐述了高速非达西渗流压力降落试井和压力恢复试井的不同，给出了高速非达西渗流压力恢复试井的一种简单解释方法。

Well Test Analysis Based on a New Model of High-velocity Non-Darcy Fluid Flow

Based on a new model which describes the high-velocity non-Darcy fluid flow，well testing models about homogeneousand double medium were established considering the wellbore storage and skin effect. Then，all the models were solvedby finite difference method. Results show that when considering the high-velocity non-Darcy flow，the pressure curves willmove up and the pressure derivative curves will have a transportation hump and move back，time delay appear in the horizontalsection. Compared with the Forchheimer model，the curves of the new model have smaller upward movement. Kmr and τDare two significant factors to determine both pressure and pressure derivative curves morphology. The transportation humpof the pressure curves increases with the decrease of Kmr and increase of τD and the pressure derivative curves have a biggerupward movement. At last，the difference between the drawdown test and build-up test based on high-velocity Non-Darcy flowis clarified and a simple interpretation method is given for buildup test.