Kelly hose

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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]

References

  1. ↑ http://www.clearcreekassociates.com/wordarchive/kellyhose.htm
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