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针对四川有水气藏岩块滲透率低、测试压差高、水逐渐进入气藏的特点,我们选择稳定法测气水相对滲透率。经重复试验、对比试验、建立了测定渗透率在1毫达西,孔隙度在5％以上的纯孔隙岩心气水相对渗透率的方法。测试曲线可定量表示出水对气田开发的危害程度。
Aiming at the low permeable rock block permeability in Sichuan, the high test pressure difference and the gradual entrance of water into the gas reservoirs, we choose the stable method to measure the relative permeability of gas and water. Through repeated experiments and comparative tests, a method was established to measure the relative gas-water relative permeability of pure pore core with the permeability of 1 millidarcy and the porosity of more than 5%. The test curve can quantitatively indicate the extent of water damage to the gas field development.