化学处理和利用清管器的机械清理是两种最常见的管线内部维护方法 ,为了对管线发生的问题进行高效低耗的控制 ,在实际应用中常把二者结合起来。本文对管线运行过程中内部可能发生的各种问题进行了分析 ,并提出了可行的处理方法。最后 ,对如何制定出良好的清管和化学处理计划提出了建议 Chemical treatment and mechanical cleaning using pigs are the two most common internal maintenance methods of pipelines. In order to control the problems of pipeline effectively and cost effectively, they are usually combined in practical application. This paper analyzes various problems that may occur in the process of pipeline operation and puts forward feasible methods. Finally, suggestions are made on how to develop a good pipeline and chemical treatment plan