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基于Arps的递减方程,本文研制了一个用于产量递减分析的无因次累积产量和无因次时间的新型典型曲线。由实际资料拟合典型曲线,可以确定递减指数(n)、初始递减率(D_i)和初始产量(Q_i)。此典型曲线的可靠性,已被油井的生产资料所验证。
Based on Arps’s descending equation, this paper developed a new typical curve of dimensionless cumulative yield and dimensionless time for yield decline analysis. From the actual data fit the typical curve, you can determine the decline index (n), the initial decline rate (D_i) and the initial output (Q_i). The reliability of this typical curve has been verified by the well’s production data.