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Experimental investigation of permeability characteristics under different hydrate saturation
Authors
吕鑫
吴丹梅
李刚
李小森
Publication date
1 August 2017
Publisher
Doi
Cite
Abstract
含固体水合物的多孔介质的渗透率是影响天然气水合物藏开采潜力的一个重要参数,多孔介质的渗透率受到水合物占据孔隙的百分比的影响,定量研究水合物的饱和度对渗透率的影响对于天然气水合物试开采工程具有重要意义。本文利用储气罐精确控制注入反应釜的甲烷气量,采用平均粒径为333.21μm的石英砂模拟多孔介质进行实验,开展了一系列不同甲烷水合物饱和度(0~35%)下液相水的渗透率的测量实验。结果表明,水合物饱和度的增加会引起渗透率逐渐下降,这与前人的研究结果一致。并且当水合物饱和度较低时(SH10%),渗透率下降速率逐渐降低。将本实验测量结果与Kozeny颗粒模型、平行毛细管模型和Masuda下降模型[0HK.K(1.S)N,N为整数]进行对比,发现测量结果与Masuda渗透率下降模型N=13的值吻合较好
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Last time updated on 07/01/2019