To replace the drilling line wrapped around the crown block and traveling block.
为更换缠绕在天车和游动滑车周围的钻井钢丝绳用。
From the crown sheave, manually pull and reeve the 1 inch Manila rope through the first sheave of the traveling block.
用人力把棕绳从天车轮上拉过来,再穿过第一个游车轮。
The driller slowly hangs off the traveling block or top drive in accordance with the derrickman's or floorman's signal.
看着井架工或钻工的手势,司钻慢慢的把游车或顶驱挂住。
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