... mechanical restriction 机械阻挡装置 mechanical rig 机械驱动钻机 mechanical sand control 机械防砂 ...
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hydrodynamic-mechanical rig 液力
mechanical drive rig [油气] 机械传动钻机
mechanical drilling rig 机械驱动钻机
mechanical control of rig [油气] 钻机的机械控制
Really? That means the mechanical rig.
是吗？四正两倒是指机械钻机。
The sequent wire-pulling is used in electric powered rig as it has smooth lifting system and cross wire-pulling is used in mechanical rig as balanced force relief impact force by compressed ai.
顺穿法一般在电动钻机上采用，主要考虑到电控操作提升系统比较平稳； 花穿法一般在机械钻机上使用，以受力平衡来缓解气控操作带来的冲击载荷的影响。
Importance is narrated that already existed the well head mechanical unit in rig, only if when Provided well head mechanical unit, obtains on safety, time saving, working saving.
叙述了改进已有钻机井口机械化装置的重要性，指出钻机上只有通过配套井口机械化装置，才能在安全、省时、省工等方面取得突破。
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