油气界面是从高含油饱和度至高含气饱和度的一个过渡带，其厚度达几英尺。
The gas-oil contact is a transitional zone that goes from high oil saturation to high gas saturation with a thickness of up to several feet.
分别研究了不同注入压力和注入气量下，细管中注气混相驱前缘和过渡带中气液两相的界面张力、组成、密度、粘度及饱和度的变化情况。
Study on interfacial tension, composition, density, viscosity and saturation of gas pha - se and liquid phase front in the slim tube under various injection pressures and injection rate.
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