A Study of Inspecting the Stress on Downhole Metal Casing in Oilfields with Magnetic Memory Method
This paper introduces a surface experimental model machine of metal magnetic memory inspection(MMI) which is co-developed by Daqing Logging & Testing Services Company (DLTS) and EDDYSUN Company(Xiamen).The model machine is compared with the instrument which was introduced from Russia and an experimental study of casing enforcing inspection on 25 casings is carried out with the finding of good corresponding relationship between the stress on casing and the information of magnetic memory. It provides a criterion of four-class semi-quantitative evaluation on the casing stress distribution. On the basis of this, a model machine of down-hole 8-electrodes inspecting the metal casing magnetic memory is developed and field test has been done successfully. It provides the basis for overcoming the difficulty of evaluating the downhole casing and tubing lifetime in the oilfield and for putting this model in to commerce in the future.
oilfields casing damage stress magnetic memory inspection
Qingxin LIU JunmingLIN Maolong CHEN Cansong WANG Gang WANG Fengjuan Zhao ZHAO Yilan GENG Chunshan ZhENG
Daqing Logging & Testing Services Company, Daqing,China2 EDDYSUN Company, Xiamen, China EDDYSUN Company, Xiamen, China;
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
2278-2286
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）