注汽开采稠油的蒸汽属饱和水蒸汽,又叫汽、水两相流。它的特点是既含有水也含有汽,而且随着温度的升高(相应的压力也升高,否则温度无法升上去),水占的比例越来越少,汽占的比例越来越多。我们将一定质量的饱和水蒸汽中汽质量所占的比例叫做蒸汽的干度,干度越高,汽占的比例越大。 Steam injection steaming heavy oil is saturated steam, also known as steam, water two-phase flow. It is characterized by containing both water and steam, and as the temperature rises (the corresponding pressure also rises, otherwise the temperature can not rise), the proportion of water is less and less, the proportion of steam is more and more . We will be a certain amount of saturated steam in the steam quality as the proportion of the steam called the dry degree, the higher the degree of dry, the greater the proportion of steam.