气润湿性的评价方法及研究进展

Research progress and evaluation method of "gas-wetting"

概述了气润湿性可提高凝析气藏产能的应用和研究方法,其作用机理是将井筒附近区域的润湿性改变为气润湿性来提高采收率。同时研究了常见润湿性的测定方法,如接触角法、Amott法和USBM法等,分析了这些方法的优缺点,提出了几种适合定量测定气润湿性的方法,并对气湿性研究存在的问题及今后的发展趋势做了总结。

Wettability is a tendency for one fluid to spread on or adhere to a solid surface in the presence of other immiscible fluids. The ＂gas-wetting＂ can improve gas recovery of condensate reservoir,its mecha- nism is by altering the wettability of wellbore region from hquid-wetting to gas-wetting to improve the gas recovery. Also studies some methods of wettability, such as contact-angle method, the Amott method and USBM method, analyzes the characteristic of these methods, and proposes several quantitative methods for gas-wetting, finally summarizes the development trend of the ＂gas-wetting＂.