Drop ball

{
  "id": "MLC-T-OAG-001200",
  "term": "Drop ball",
  "field": "Oil and gas",
  "definition": "A spherical device pumped downhole with fluid to actuate a tool or isolate a wellbore section. It lands in a specifically sized seat within a downhole assembly, such as a sliding sleeve or a ball-activated firing head for a perforating gun. The resulting pressure increase behind the seated ball confirms its position and initiates the tool's function, like opening a port or firing the gun.",
  "subject": "Perforating",
  "url": "https://mlchart.com/terminology/oil-and-gas/drop-ball/"
}