【摘要】 水束缚堵塞是导致气藏储层损害的一个主要因素。结合逾渗理论和有效介质理论,采用威布尔分布作为孔喉分布函数,建立了计算气藏水束缚堵塞严重程度的模型,并编制了相应的计算软件。计算结果表明,气藏含水饱和度的增加导致气相有效渗透率的急剧降低,当网络的含水饱和度由6.9%增至26.64%时,气相的有效渗透率下降了37 52%。这对于揭示现场实际气藏水束缚堵塞损害机理以及高效开发和保护气藏具有一定的指导意义。更多还原

【Abstract】 Waterblocking is the major factor of the damage of gas reservoir. Based on percolation theory and effective medium theory, a model for calculating the damage severity of waterblocking in gas reservoir was established by truncated Weibull distribution. And the corresponding software was written. The calculated results show that the increase in water saturation causes the rapid decrement in gas effective permeability. When the water saturation of lattice increases to 2664% from 6.9%, the gas effective permeability decreases by 37.52%. This has important instructive value to gas reservoir production.更多还原