Abstract: A downhole tool includes a main body configured to be disposed by a conveyance member within a tubing string disposed in a wellbore drilled into a subterranean zone, and a plurality of hammers disposed about a central axis of the main body, each of the plurality of hammers configured to reciprocate radially with respect to the central axis. The tool also includes a plurality of electric motors, each of the plurality of electric motors configured to drive the reciprocation of a respective one of the plurality of hammers, such that each of the electric motors can cause a respective hammer to repetitively strike an interior surface of the tubing string and thereby impart vibration in the tubing string.