Abstract Experimental investigation of the integrity of casing pipes, used in the oil drilling rigs, withdrawn after about 70,000 h of service, has been conducted, together with numerical simulation. Pipes were manufactured by the high frequency contact welding (HF) of API J55 steel. The influence of corrosion damage is investigated by means of pressure test of a pipe with different damage levels made by machining the circular holes. The finite element analysis of the damaged pipe subjected to internal pressure is conducted to simulate the stress state in the pipe and to establish the criteria for the maximum pressure that a damaged pipe can withstand. Several analytical expressions are used for estimation of the maximum pressure in a damaged pipeline, and the solutions are compared to predictions of finite element models and experimental results.

中文翻译：

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API J55钢套管腐蚀损坏的剩余强度

摘要 对石油钻机中使用的套管在服役约 70,000 小时后撤出的完整性进行了实验研究，并进行了数值模拟。管道由 API J55 钢的高频接触焊接 (HF) 制造。通过对圆孔加工制成不同损伤程度的管道进行试压，研究腐蚀损伤的影响。对受内压损坏的管道进行有限元分析，以模拟管道中的应力状态，并建立损坏管道所能承受的最大压力的标准。几种解析表达式用于估计损坏管道中的最大压力，并将解决方案与有限元模型和实验结果的预测进行比较。