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水驱特征曲线在油藏工程研究中具有重要的作用，而相对渗透率曲线是油藏工程研究中的一项重要基础资料。作者详细推导了用水驱特征曲线计算相对渗透率曲线的公式，给出了具体的计算实例，并进行了讨论，认为该方法得到的相对渗透率是具有代表性的，能满足一定的精度要求，具有一定的实用性。
Water flooding characteristic curve plays an important role in reservoir engineering research, and relative permeability curve is an important basic data in reservoir engineering research. The author deduces the formula of calculating relative permeability curve with water drive characteristic curve in detail, gives concrete calculation examples and discusses that the relative permeability obtained by this method is representative, which can meet certain accuracy requirements, Has some practicality.