East Gas Transmission Pipeline QJ-SS Pipe Pigging Program Analysis And Exploration

Sichuan to eastern gas pipeline project is a key project during the period of\"11th five-year plan\" in China, built in2009completed and put into operation since, gas in the Yangtze river basin area of more than300, one hundred million, in recent years and put into operation in the operation of the production, we found that part of the location and the yard, there are plenty of liquid water in the pipe and sewage, such as main QJ-SS section production process, intermediate pressure drop pipe production process change is very big, and through the valve chamber empty released a large amount of liquid water; In December2009-March2010pipeline in winter during a production run, gas station pressure regulating lever WH gas transmission station, SS each branch severe ice block, can not smooth and gas supply to the user; QJ-WH station two weeks on average for a drainage, can get rid of a certain amount of water, especially on March16,2010WH gas station is about1ton sewage discharge water. These situation, increasing the ice wall and pipe pressure regulating equipment the risk of frozen wall as well as to the equipment, instruments and meters of erosion, pollution, reduce the efficiency of gas transmission pipeline and pipeline service life, seriously affected the normal production operation. Must be conducted in a timely manner to the sichuan to east gas pipeline pigging, sichuan to east gas pipeline is sinopec’s first high pressure, large diameter pipeline, most of the workers, there is no such pigging operation experience, and the location of peaks and cliff towering, steep slope along the groove depth and height difference disparity, landform is very complex, so we chose the QJ-SS this a period of relatively flat terrain, traffic is relatively convenient for pigging job starting area, this article is mainly about the section of pipe cleaning work plan to do a systematic analysis and research, mainly according to the actual and the status of the personnel, the urgency of the work from the pigging, organization, work scope, schedule, pig selection and adjustment of speed control, the labor process, operation risk and response, emergency plan, material preparation, etc, to illustrate the concrete operating methods and steps, in April2010. QJ-SS Duan Qing pipe work formally implement, according to this scheme is proved feasibility of this scheme is very high, after two years afterSichuan-East Gas Transmission Pipeline Company in chongqing. hubei. jiangsu. hubei and anhui paragraphs as many times practice, has achieved success, for sichuan to east gas pipeline running smoothly and provide a basis for the understanding of integrity of the pipeline, write at the same time, through this scheme, the pigging job training reserve talent for the company, for the company to create a good economic and social benefits.