作者：田凯
作者单位：中石化胜利石油工程有限公司钻井工艺研究院, 山东 东营 257017
关键词：海底输油管道;水平悬空;腐蚀缺陷;剩余寿命预测
摘要：
为解决海底输油气管道在悬空与腐蚀联合作用下的剩余寿命预测问题，提出一种海底输油管道的强度计算与寿命预测方法。通过悬空管道受力分析求得管壁各项应力，采用应力集中系数法分析腐蚀缺陷对悬空管道强度的影响，根据模拟腐蚀试验得出的管道缺陷发展规律建立管道剩余寿命预测模型，从而解决输油气管道的剩余寿命预测问题。实验结果表明：悬空与腐蚀联合作用对管道强度的影响最强，悬空缺陷次之，腐蚀缺陷最弱；随着服役年限的增长，悬空与腐蚀缺陷尺寸逐步变大，管道强度降低，最终到达一定年限时管道失效。
Residual life prediction of submarine oil pipeline under the combination of suspended and corrosion
TIAN Kai
Drilling Technology Research Institute, Shengli Oil Service Corporation of SINOPEC, Dongying 257017, China
Abstract: In order to solve the problem of residual life prediction of submarine oil pipeline under the combination of suspended and corrosion, a method used for strength calculation and residual life prediction of submarine oil pipeline is proposed. Firstly, the stress on the pipe wall is got through the stress analysis of suspended pipeline. Then, the method of stress concentration factor is used to analyze the influence of corrosion defect to the strength of the suspended pipeline. At last, the residual life prediction model of pipeline is established according to the development law of pipeline defects from corrosion simulation tests and the residual life prediction problem of oil pipeline is solved. Experiment results show that the combined effects of suspension and corrosion have the greatest influence on the pipeline strength, and the suspended defect is the second, and the corrosion defect is the weakest. With the increase of service life, the size of the suspension and corrosion defects is gradually increased and the pipeline strength is reduced, and finally the pipeline will lose efficiency after several years.
Keywords: submarine oil pipeline;horizontal suspended;corrosion defect;residual life prediction
2018, 44(2): 6-10 收稿日期: 2017-06-18;收到修改稿日期: 2017-07-03
基金项目: 国家自然科学基金资助项目（51375284）
作者简介: 田凯(1979-),男,山东东营市人,副研究员,硕士,研究方向为海洋石油装备研发。
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