FIELD: oil and gas production industry. SUBSTANCE: device is intended for removing depositions from internal surface of pipe strings in producing wells. Device is made up of at least one section. Section is assembled of at least one upper cleaning head and one lower cleaning head which are installed on shaft for possible free rotation. Arranged on external surface of cleaning heads at angle to longitudinal axis of shaft are oppositely directed working teeth. Spacer bush is mounted between cleaning heads. Teeth are created by spiral grooves of angular profile with radius at angle vertex equal to 0.5-10 mm. Positioning angle of oppositely directed teeth with respect to longitudinal axis of shaft is within 0-45 deg. Unit of connecting working tool to pulling member or wire is made with possibility of connection to shaft directly or through weight. Aforesaid embodiment of device affords higher reliability in operation and allows for cutting working time together with higher productivity. EFFECT: higher efficiency. 14 cl, 4 dwg
