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对凝析气藏开发动态和经济效益的正确预测需要正确模拟这类气藏的流态和相态。模拟流态最重要的是获取有代表性的凝析油气相对渗透率曲线 ,它是数模和试井分析中最常用的基础曲线 ,目前通常采用模拟油和模拟气相渗曲线来替代凝析油气相渗曲线。但低界面张力的传统油气在多孔介质中的流动规律并不同于凝析油气的流动规律 ,凝析油气物性非常接近 ,凝析油在水与凝析气之间形成一个水动力连续的夹膜 ,它随着凝析气一起流动。同时多孔介质特性、原生水、润湿性、重力、界面张力、粘滞力、流速等因素对凝析油气流动规律的影响作用也不同于对传统油气流动的影响作用。由于微观渗流规律不同 ,凝析油气相对渗透率的变化规律不同于传统油气相渗 ,不能用低界面张力油气体系相渗来代替凝析油气相渗 ,进而确定了实验实测相渗曲线的重要性和今后的研究方向。
Correct prediction of the development and economic benefits of condensate gas reservoirs needs to correctly simulate the fluid and phase behavior of such gas reservoirs. The most important thing to simulate the fluid state is to get the relative curve of relative permeability of condensate gas, which is the most commonly used basic curve in numerical model and well test analysis. At present, the simulated oil and simulated gas permeation curve are usually used instead of condensate gas Phase infiltration curve. However, the flow law of traditional oil and gas with low interfacial tension in porous media is different from that of condensate hydrocarbons. The properties of condensate hydrocarbons are very close. Condensate forms a hydrodynamic continuous membrane between water and condensate gas , It flows with the condensate. At the same time, the influence of porous media characteristics, primary water, wettability, gravity, interfacial tension, viscous force, flow rate and other factors on the law of flow of condensate oil and gas is also different from that of traditional oil and gas flow. Due to the different microscopic seepage laws, the change law of relative permeability of condensate gas is different from that of traditional oil-gas permeation, and can not be replaced by the low interfacial tension oil-gas system infiltration, so as to confirm the importance of experimentally measured phase permeation curve And future research direction.