Kelly hose

A Kelly hose (also known as a mud hose or rotary hose) is a flexible, steel reinforced, high pressure hose that connects the standpipe to the kelly (or more specifically to the goose-neck on the swivel above the kelly) and allows free vertical movement of the kelly while facilitating the flow of drilling fluid through the system and down the drill string.[1] The Kelly hose has a diameter of 3-5 inches (inside diameter).[2]

References
  1. "Archived copy". Archived from the original on 2007-09-28. Retrieved 2007-08-06.CS1 maint: archived copy as title (link)
  2. http://www.glossary.oilfield.slb.com/Terms/k/kelly_hose.aspx
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