It was a BOP drill.

这是防喷演习。

youdao

It is an inside BOP (blowout preventer)in the drill string.

投入式止回阀是钻柱内防喷器。

youdao

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。

youdao

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。

youdao