What is the drill pipe string weight in air?
钻杆在空气中的重量是多少？
The crew attaches new lengths of pipe one by one from the top until the “drill string” is long enough to hit the seafloor.
船员们从这根钢管的顶部，一根一根地装上更多管道，直到这根“钻柱”足够长，能碰到海底。
The crew attaches new lengths of pipe one by one from the top until the "drill string" is long enough to hit the seafloor.
船员们从这根钢管的顶部，一根一根地装上更多管道，直到这根“钻柱”足够长，能碰到海底。
The riser's inner hollow core (a pipe within a pipe) is reserved for the drill string.
立管内部核心是空心的(管中管)，留给钻柱使用。
The swing arms are fastened to the inside structure of the mast, and permit the pipe rack to be low-ered from the stored position to the centerline of the drill string.
两个悬臂则固定在支架的内部结构上，并允许管架从贮存位置降到钻柱中线上。
It is significant for adjusting drill pipe sequence to improve average life of drill string.
该研究结果对于现场提高钻柱的平均使用寿命具有重要的工程理论指导意义。
The drill pipe pressures are used because the contents of the drill string are accurately known and therefore these pressures provide an easily deduced relationship for bottom hole pressure.
而使用钻杆压力是因为要精确知道钻具的容量而且很容易从相关的井底压力扣除这些压力。
The drill pipe pressures are used because the contents of the drill string are accurately known and therefore these pressures provide an easily deduced relationship for bottom hole pressure.
而使用钻杆压力是因为要精确知道钻具的容量而且很容易从相关的井底压力扣除这些压力。
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