中国石油大学学报（自然科学版）2017，Vol.41Issue(1)：138-143,6.DOI:10.3969/j.issn.1673-5005.2017.01.018
深水测试管柱-隔水管耦合涡激疲劳分析
Analysis of VIV-induced fatigue of string-riser coupled system in deepwater
摘要
Abstract
The fatigue damage induced by vortex in a riser occurs frequently during deepwater drilling/completion and testing operations,while the testing string fatigue caused by vortex-induced vibration in a riser also could not be ignored.The stringriser coupled system model was established in the present paper,and the fatigue algorithm was also proposed by considering the characteristics of testing operation in high pressure deepwater gas wells and the interaction between the string and riser.Concentrating on a high pressure deepwater gas well in South China Sea,the vortex-induced vibration mechanism,the fatigue damage rules and the influence factors were investigated.The results show that the multi-modal vibration occurs easier in the string-riser coupled system at a high velocity.The fatigue damage is fluctuating with the increase of the water depth,and the maximum fatigue damage is located on the top side and the lower flexible joint.The fatigue damage of the testing string is about 0.2-0.25 times as big as that of the riser.An appropriate increase of the riser top tension and the string lifting force would effectively improve the vortex-induced vibration fatigue performance of the string-riser coupled system.关键词
深水钻井/测试管柱/隔水管/涡激振动/疲劳分析/接触分析Key words
deep water drilling/testing string/riser/vortex-induced vibration/fatigue analysis/contact analysis分类
能源科技引用本文复制引用
刘红兵,陈国明,刘康,孟文波,韩彬彬,刘秀全..深水测试管柱-隔水管耦合涡激疲劳分析[J].中国石油大学学报（自然科学版）,2017,41(1):138-143,6.基金项目
国家重点基础研究发展计划项目(2015CB251200) （2015CB251200）
山东省自然科学基金联合专项(ZR2014EL018,ZR2016EL08) （ZR2014EL018,ZR2016EL08）
中央高校基本科研业务费专项(15CX06058A) （15CX06058A）
