RESEARCH ON METAL MAGNETIC MEMORY DETECTION OF OIL AND GAS PIPELINE DAMAGE
At present, total length of oil and gas pipelines in china has reached to about 64 thousand kilometers, and it increases at the speed of more than 2000 km/a. Most of the existed pipelnes which have serviced for more than 20 years have entered into a period of high incidence of accidents so that its significant to conduct research on pipeline damage detection technology. Experiments were carried out on artificial carved X42 pipeline steel with metal magnetic memory methods which is the latest technology in the field of non-destructive testing. The magnetic field signal collected is compressed and saved after denoised by signal analysis and processing system. With peak-peak value, gradient value, the width vakie, peak spacing vabe as characteristic parameters respectively, ideal relationships between steel damage status (depth, width and angle) and magnetic memory signal feature are obtained, and it prelimnary realizes quantification of the metal magnetic memory methods in the field of oil and gas pipeline damage detection. Test results confirm feasibility of quantification of the metal magnetic memory testing, and it has great significance for improving the safety of pipelines and realizing pipeline integrity management.
Sun Jiye Fan Jianchun Zhang Lan
China University of Petroleum,Beijing China University of Petroleum,Beijing China Jniversity of Petroleum,Beijing
国际会议
The 3rd World Conference on Safety of Oil and Gas Industry(第三届世界石油天然气工业安全会议 WCOGI 2010)
北京
英文
515-519
2010-09-27（万方平台首次上网日期，不代表论文的发表时间）