STUDY ON THE IMPERFECTIONS IN API SPEC 5CT BY ANALYZING THE INTERNAL PRESSURE STRENGTH OF THE DEFECTIVE OIL TUBE

摘要：

The model of grade J55,31/2 oiltube with linear defects (including seam, lap, crack, plug score, cut and gouge)1 is established by using finite element method. The internal pressure strength of the oil tubes respectively with two types of defects is analyzed. The results showed that not only the depth of the defects has influence on the tube strength, but also the shape. API Spec 5CT stipulate that the limit depth of the linear defects is 12.5％ of the Wall Thickness, while the shape of the defect does not make any request. Thus the API Spec 5CT standard has some imperfections. And the Corresponding improvement suggestion is given in this paper.

关键词： API Spec 5 CT standard finite dement defect oil tube

作者: Wang Yu-mei Fan Jian-chun Zhang Jing

作者单位: Research Center of Oil & Gas Safety Engineering,China University of Petroleum,Beijing Beijing,China

会议类型: 国际会议

会议名称: 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)

会议地点: 北京

会议语种:英文

页码: 78-81

在线出版日期: 2010-09-27（万方平台首次上网日期，不代表论文的发表时间）