摘要
通过室内单管模型进行了热水、饱和蒸汽、过热蒸汽驱油实验。在相同驱替温度下,对比3种不同驱油方式下的驱油效率发现,饱和蒸汽比热水驱的驱油效率有一定程度的提高,同时首次发现过热蒸汽比饱和蒸汽高12%以上,大幅度地提高了驱油效率。不同驱油方式下驱出原油的碳元素组成分析结果表明,产出油的轻组分含量不断增加,重组分含量不断减少;过热蒸汽对多孔介质中小孔隙、盲端的稠油轻质组分的蒸馏作用比饱和蒸汽更大,蒸汽蒸馏作用是其提高驱油效率的主要机理之一。
By doing some laboratory experiments on hot water displacement, saturated steam displacement and superheated steam displacement, the effect of different forms of water molecule are studied on oil displacement efficiency under the same temperature. The oil displacement efficiency of superheated steam is highest among hot water displacement, saturated steam displacement and superheated steam displacement. By doing some analysis on the form of carbon-component of produced oil, the result indicates that the content of light oil component increased with the reduction of heavy oil component. What＇s more, the distillation of superheated steam has more impact on the microbore and dead end pore in porous medium than saturated steam,it could enhance more displacement efficiency of steam flooding. As the result, the impact of distillation steam must be considered in the thermal development of conventional heavy oil.
出处
《重庆科技学院学报（自然科学版）》
CAS
2009年第4期66-68,共3页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
关键词
稠油
过热蒸汽
蒸馏作用
过热度
驱油效率
heavy oil
superheated steam
distillation
degree of superheat
displacement efficiency
