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中文摘要：
优选完井方式时应权衡多个技术经济指标，运用模糊数学理论建立各指标的隶属函数，确定其隶属度，并应用系统工程理论中的层次分析方法，确定各指标的权重，通过模糊综合决策模型，将多个指标对优选结果的影响归属到优属度值上定量优选完井方式。优选过程均有数学计算支持，相对于以往的模糊数学方法优选结果更为客观、科学、可靠。敏感性分析结果表明，优选结果对油层厚度、水平段长度、泥饼厚度和完井投资4项因素最为敏感，建议在优选前尽量提高敏感因素的准确度，使优选结果与实际更为相符。
英文摘要：
Several technical and economic indexes should be considered in optimizing horizontal well completion. The paper establishes membership function of each factor to confirm its degree of membership and uses systematic engineering＇s level analysis principle to determine its weight. Fuzzy comprehensive evaluation model normalizes the effects of multi-factor to optimal membership degree to quantitatively optimize well completions. Compared with previous fuzzy mathematics method, the optimization result using this method is more objective, scientific and reliable. The resuh of sensitivity analyses shows that the optimized result is sensitive to reservoir thickness, length of horizontal sector, cake thickness and completion investment. Therefore, in order to make optimized result consistent with reality, the accuracy of sensitivity elements should be improved.
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