Swivel

{
  "id": "MLC-T-OAG-003732",
  "term": "Swivel",
  "field": "Oil and gas",
  "definition": "A mechanical device on a drilling rig that hangs from the hook and traveling block, supporting the weight of the drill string while allowing it to rotate. It has a stationary upper section connected to the mud hose and a rotating lower section connected to the kelly. Modern top drive systems have replaced the kelly, rotary table, and swivel on most large rigs.",
  "subject": "Drilling",
  "url": "https://mlchart.com/terminology/oil-and-gas/swivel/"
}