注气，为提高油田采收率,将气体(天然气、二氧化碳、氮气或空气)通过注入井注入到油层中,以补充和保持油层能量的措施。
低渗油藏注气开发分析 关键词 ：低渗透；油气藏；注气 [gap=587]Keywords: low permeability; reservoir; gas injection
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注气井 [油气] gas injection well ; gas injector ; gas input well
注气法 insufflation ; gas injection
气顶注气 gas cap injection
外部注气 [油气] external gas injection
高压注气 [油气] high pressure gas injection ; gas injection with high pressure
回注气 recirculated gas
膝关节注气影术 pneumography of knee joint
注气剖面 gas injection profile
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