英语翻译四.安装及使用方法1.当钻柱下到预定深度需要起钻时,上好吊卡,将方钻杆卸开.2.将刮泥器溢流

英语翻译四.安装及使用方法1.当钻柱下到预定深度需要起钻时,上好吊卡,将方钻杆卸开.2.将刮泥器溢流

VI. Installation and application methods1.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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