FIELD: pipeline conditioning. SUBSTANCE: internal deposits are removed from pipeline by means of flowing abrasive medium, and internal surface is coated with viscous solidifying material. Abrasive medium is delivered to pipeline under effect of differential pressure. Under the action of variable differential pressure abrasive medium reciprocation in pipeline, and under the action of differential pressure between both ends of pipeline it is removed from the latter. Quality of pipe internal surface after pipe treatment may be compared with surface quality of new pipeline. EFFECT: higher efficiency. 28 cl
