CLEANING OF PIPELINES

A pipeline cleaning system can include a pipeline cleaning apparatus with at least one fluid director that causes fluid which flows through the fluid director to repeatedly change direction. A method of cleaning a pipeline can include inserting a pipeline cleaning apparatus into the pipeline, flowing a fluid, thereby causing the fluid to be discharged from the pipeline cleaning apparatus into the pipeline, and a fluid director of the pipeline cleaning apparatus repeatedly changing a direction of discharge of the fluid from the pipeline cleaning apparatus. A pipeline cleaning apparatus can include a housing adapted for insertion into a pipeline, and at least one fluid director that repeatedly changes a direction of discharge of fluid from the pipeline cleaning apparatus, in response to flow of the fluid through the apparatus.