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Kelly

The heavy square or hexagonal steel member suspended from the swivel through the rotary table and connected to the topmost joint of drill pipe to turn the drill stem as the rotary table turns.

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  • ส่วนหนึ่งของคำพูด: noun
  • อุตสาหกรรม/ขอบเขต: Oil & gas
  • Category: Drilling
  • Company: PETEX

ผู้สร้าง

  • Harry8L
  • (London, United Kingdom)

  •  (V.I.P) 574128 points
  • 100% positive feedback
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