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气井多液滴携液模型实验研究

Fault-Block Oil and Gas Field(2014)

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Abstract
在Zhou的多液滴模型基础上,通过可视化实验装置,采用压缩空气和水作为介质模拟气井气流携液过程,验证分析了Zhou的多液滴模型.通过大量实验数据分析发现:气体达到携液临界流速、持液率大于0.008 5时,气井开始出现积液,比Zhou所提出的0.010 0有所偏小;在持液率大于0.008 5时,加大气流速度到某值时,液体可以全部被携带出井口,且随着持液率的提高,所需的临界流速也随之增加.该文根据实验数据修正了Zhou的多液滴模型,提出了与实验数据相吻合的新模型,可用于高含水气井排水采气研究与工程实际应用.
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Key words
multi-droplet theory,critical liquid holdup,carrying liquid of gas,liquid carrying rate of gas,water draining and gas recovering
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