FIELD: cleaning pipelines. SUBSTANCE: method for cleaning pipelines lies in shutting one pipeline end, concurrent passing cleaning mean through the pipeline and influencing on pipeline surface by water jet under pressure, that is followed by deposit removing through one well. On passing the cleaning mean through a pipeline, the mean is connected to a link passed through another well, then the cleaning mean and the link are drawn through the first well. Then the cleaning mean is disconnected from the link. The link is connected to the mean forming guided flow of compressed air. The pipeline is shut at outlet end. On shutting and before removing the deposits the pipeline to be cleaned is filled with service water. Two third of the pipeline is filled with service water. Then the link is drawn through another well to place the mean forming the guided air flow in the water, and compressed air cyclic impact is carried out at 0.5 - 2 Hz frequency to split of the deposits from pipeline surface. Then the mean for forming guided air flow is removed , and another cleaning mean of higher weight is connected to the link to increase stability. Outlet water jet pressure is 2 - 12 atm, and compressed air pressure achieves 200 atm. EFFECT: high quality cleaning the pipelines. 2 cl, 2 dwg
