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科技导报  2015 

页岩气水平井体积压裂试井压力特征

DOI: 10.3981/j.issn.1000-7857.2015.22.010, PP. 65-68

Keywords: 页岩气藏,压裂水平井,渗流模型,不稳定压力

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Abstract:

页岩气藏普遍采用体积压裂方式开发。通过考虑吸附解吸影响的渗流方程,建立了考虑压裂体体积及展布的水平井渗流模型,分析了不同压裂体体积及展布情况下的压力特征。研究表明压裂体体积及展布主要影响早期线性流曲线形态特征;压裂体的压裂程度影响着早期线性流持续时间的长短;早期线性流曲线特征受多重因素影响,在对体积压裂进行试井评价时需要综合考虑。

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