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用毛管流动孔隙结构仪分析了酸液对岩石微观孔隙结构特征的改变。酸化前后岩样的毛管流动孔隙结构分析试验结果表明,酸化作用能够使岩石内部的有效孔喉半径增大,有效孔喉个数增加,孔道发育程度大幅度提高,从而大幅度改善储层的微观孔隙结构特性。微观孔隙结构分析从微观角度分析了酸化增产机理。
The capillary flow pore structure analyzer was used to analyze the change of microscopic pore structure characteristics of acid rock. The results of capillary flow pore structure analysis of rock samples before and after acidification indicate that the acidification can increase the effective pore throat radius, the number of effective pore throats and the pore growth rate greatly, so as to greatly improve the microscopic Pore structure properties. Analysis of microscopic pore structure The mechanism of acidification and increase of production was analyzed from the microscopic point of view.