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

^ "Drilling terms: Kelly hose". Archived from the original on 2007-09-28. Retrieved 2007-08-06.
^ "Kelly_hose".

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[1] "Drilling terms: Kelly hose". Archived from the original on 2007-09-28. Retrieved 2007-08-06.

[2] "Kelly_hose".

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