A vibrator tool for use in inserting a bottom hole assembly into a wellbore. The vibrator tool includes a substantially cylindrical body, a motor within the substantially cylindrical body, and a non-linear shaft attached to the motor so that the motor turns the non-linear shaft. The non-linear shaft extends outwardly from the motor within the substantially cylindrical body. The vibrator tool further includes a bearing attached to the shaft a predetermined distance from the motor so that the bearing rotates as the non-linear shaft turns. The bearing contacts portions of the inner surface of the cylindrical body as the non-linear shaft turns, thereby vibrating the substantially cylindrical body.