Related Oil & Gas Terms

• Swivel

  A rotary tool that is hung from the rotary hook and traveling block to suspend the drill stem and to permit it to rotate freely. it also provides a connection fore the rotary hose and a passageway of the flow of drilling fluid into the drill stem....

• Rotary hose

  A reinforced flexible tub on a rotary drilling rig that conducts the drilling fluid from the standpipe to the swivel and kelly. also called the mud hose or the kelly hose...

• Kelly

  The heavy steel member, three-, four-, six-, or eight-sided, 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. it has a bored passageway that permits fluid...

• Circulation system

  The complete, circuitous path that the drilling fluid travels. starting at the main rig pumps, major components include surface piping, the standpipe, the kelly (rotary) hose, the kelly, the drillpipe, drill collars, bit nozzles, the various annular geometries of the openhole and casing strings, the bell nipple, the flowline, the mud-cleaning equipment, the mud tanks, the centrifugal...

• Rotating components

  Those parts of the drilling or workover rig that are designed to turn or rotate the drill stem and bit – swivel, kelly, kelly busing, master bushing, and rotary table....