关键词: 汽水分离 , 蒸汽过热 , 汽水混合 , 高干度(微过热)蒸汽

Abstract: The steam quality is a major factor during the steam drive process. The reasons of the lower steam quality for the conventional oncethrough steam boiler in the oilfield were analyzed and discussed. The superheat, the steam separator and the fizzy mixer were added and designed in the former and conventional producing steam structure. And then, the efficiency of heavy oil recovery increased when the steam quality increased to 100% or more under the normal water quality, and the new process reached the requirement of steam quality during the steam drive process.

Key words: Watersteam separation,    ,  Overheating steam,    , Watersteam mixed,    ,  Defined dryness (microoverheating) steam