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中文摘要：
致密砂岩气藏储层物性差，需要采用水平井配合多级水力压裂技术进行开发。为此，对低渗透气藏多级压裂水平井稳态产能模型进行了研究。首先，由渗流力学基本原理，建立单条裂缝水平井等效井径模型；然后，运用叠加原理．建立了耦合水平井段管流动态的多级压裂水平井稳态产能模型，在Visual Studio2008C#编程环境下，对模型进行了求解，获得了多级压裂水平井产量及压力分布。在此基础上，对多级压裂水平井稳态产能的相关影响因素进行了分析，认为缝长是影响低渗透气藏产能的主要因素，而裂缝导流能力对其影响不大。通过矿场实例，计算得到西部某气藏压裂水平井单井产能为11．357×10^4m3／d，与实测产能误差为15．7％，验证了计算结果的准确性。该井在压裂施工中应尽可能提高缝长，以获得更好的增产效果。
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