1. n. [Perforating]

The use of shaped explosive charges to create perforation tunnels. The explosive charge produces an extremely high-pressure jet that penetrates the casing or liner to shoot into the reservoir formation. The shaped charges are contained in a perforating gun assembly that can be conveyed on wireline, tubing or coiled tubing, depending on the application and the wellbore conditions.

See: perforating gun,  shaped charge