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本文以孔隙结构参数为基础,考虑多因素综合影响水驱油效率中不确定性的一个侧面——模糊性。并以模糊数学为工具建立一个静态预测水驱油效率的数学模型。对喇、萨、杏油田8口井的压汞资料,应用本模型进行预测,其样本符合率达73％左右,对小井距实验区 S_(Ⅱ7+8)小层进行现场仿真实验,其结果与现场实际资料基本吻合。本模型可用于储层分类和评价,也可用于动态分析和储量计算,为水驱油效率的研究提出了一条新途径,并具有一定的实际应用价值。
Based on the pore structure parameters, this paper considers a side-fuzziness of the uncertainties in the efficiency of water flooding based on multi-factors. A mathematical model of static prediction of water flooding efficiency is established by using fuzzy mathematics. The mercury injection data of 8 wells in La, Sa and Xing oil fields are predicted by this model. The coincidence rate of samples is about 73%. The field simulation experiment of S_ (Ⅱ 7 + 8) And the actual field data is basically consistent. The model can be used for reservoir classification and evaluation as well as dynamic analysis and reserves calculation. It provides a new approach for the study of water flooding efficiency and has certain practical value.