跪求 英语翻译高手 石油专业英语说明书的安装
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时间:2024-08-17 09:35:17
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跪求 英语翻译高手 石油专业英语说明书的安装【专家解说】:VI. Installation and application methods
1.When drill string
【专家解说】:VI. Installation and application methods
1.When drill string runs to the predetermined depth and needs pulling out, jam the lift sub and dismantle the kelly bar.
2. Put the scraper overflow gutter up on the drill string upward.
3.Then connect the kelly bar, lift the kelly bar with a hook and raise the master bushing with a grappling hook.
4.Push the scraper continually downward, and leave the link stopper on the seton to the drill floor.
5.Install the master bushing, push down the seton in the crannies between master bushing and swivel disc box.
6.The installed state as shown in figure II, and can be pulled out normally.
V.Caution operation
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