论文部分内容阅读
自行改建了一套用于天然气扩散系数测试的实验装置 ;分析了干、湿样条件下天然气扩散机理的差异 ,建立了计算天然气在饱和水岩样中扩散系数的新方法 ;选取了 14块不同物性 (孔隙度、渗透率 )的岩样 ,在饱和水条件下测试并计算了天然气在湿岩样中的扩散系数 ;结果表明 :与传统方法相比 ,计算得到的扩散系数更为合理、可信
A set of experimental devices for natural gas diffusion coefficient test was modified by ourselves. The difference of natural gas diffusion mechanism under dry and wet sample conditions was analyzed. A new method to calculate the diffusion coefficient of natural gas in saturated water and rock sample was established. Fourteen different physical properties (Porosity and permeability) were measured and the diffusion coefficients of natural gas in wet rock samples were tested and calculated under saturated water conditions. The results show that the calculated diffusion coefficient is more reasonable and credible than the traditional method