名词
中文翻译：油井封隔器
同义词：
['oil well packer', 'oil well plug', 'oil well plugging device']
例句：
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1. The engineer used a ullage plug to seal the well before drilling.
工程师使用油井封隔器在钻探前密封井。
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2.The ullage plug was designed to prevent water from entering the well during production.
油井封隔器的设计是为了在生产过程中防止水进入井中。
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3. The ullage plug is an essential tool for maintaining the integrity of the wellbore.
油井封隔器是维护井眼完整性的必备工具。