Drillstem

{
  "id": "MLC-T-OAG-001194",
  "term": "Drillstem",
  "field": "Oil and gas",
  "definition": "The entire column of pipe and specialized components extending from the surface rotary equipment down to the drill bit. It transmits rotational energy and weight to the bit and serves as a conduit for drilling fluid to travel down the hole and carry cuttings back to the surface. The assembly includes drill pipe, heavy weight drill pipe, drill collars, stabilizers, and subs, all connected by threaded joints.",
  "subject": "Drilling",
  "url": "https://mlchart.com/terminology/oil-and-gas/drillstem/"
}