【摘要】 为了研究多孔介质中天然气水合物注热水分解规律,设计了多孔介质中天然气水合物分解实验装置,并通过热电偶和电阻测试来分析水合物分解前缘的规律性,大量的实验研究表明天然气水合物注热水分解过程呈现明显储层升温、平稳分解和前缘突破三阶段特征。为揭示天然气水合物分解实质,建立了水合物分解前缘移动界面数学模型,并与测温、电阻测试前缘实验值对比分析,结果表明拟合值比实验值拟合较好,但要更长的时间方能突破水合物的分解前缘。更多还原

【Abstract】 In order to inquire the laws of hot water flooding dissociation of natural gas hydrates in porous medium,experimental equipments on dissociation of natural gas hydrates have been design and laws on dissociation frontal brim of hydrates are inspected through thermal elect-dipole and resistance in these experiments.Results from massive experiments show that three steps characteristics(reservoir bed temperature rise,equal dissociation and frontal brim breach) are exhibited distinctly.In order to reveal substance of dissociation of natural gas hydrates,model on dissociation moving frontal brim of hydrates is built.Fit values and experimental values of temperature and electric resistance are analyzed contrast.It shows from fit values and experimental values that correlation express preferable,but more times of dissociation was needed for fit value than experimental value to break the dissociation frontal brim of natural gas hydrate.更多还原