1. vb. [Well Completions, Well Workover and Intervention]

To pump acid into the wellbore to remove near-well formation damage and other damaging substances. This procedure commonly enhances production by increasing the effective well radius. When performed at pressures above the pressure required to fracture the formation, the procedure is often referred to as acid fracturing.

See: acid frac,  acid job,  acid stimulation,  acidizing,  hydraulic fracturing,  matrix acidizing,  matrix stimulation