这是防喷演习。
It is an inside BOP (blowout preventer)in the drill string.
投入式止回阀是钻柱内防喷器。
At present, blowout prevention system mainly includes wellhead BOP stack and blowout prevention tools in drill strings.
目前,防喷系统主要包括井口防喷器组合和钻柱内防喷工具。
At present, blowout prevention system mainly includes wellhead BOP stack and blowout prevention tools in drill strings.
目前,防喷系统主要包括井口防喷器组合和钻柱内防喷工具。
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