摘要
连续管在作业过程中,复杂的周期性载荷作用、腐蚀、机械损伤、制造缺陷和人为误操作等都会导致连续管寿命的缩短。为此,基于Qt平台、疲劳寿命理论和国内外大量经验数据开发出了连续管疲劳寿命预测软件。通过该软件计算分析了连续管弯曲半径、壁厚和内压等对其疲劳寿命的影响,并进行了可行性验证。分析结果表明:该软件能够有效地计算出连续管疲劳寿命值;连续管内部压力的增大使其疲劳寿命的缩短由快速到缓慢,当内压增大到一定值时,连续管基本失去承载能力;选择合适的滚筒尺寸可以延长连续管的使用寿命;建议选用壁厚较大或者变壁厚的连续管。该软件的开发对连续管在工程中的应用和安全评估具有重要的指导意义。
During operation,the life of coiled tubing will be shortened due to complex cyclic load effect,corrosion,mechanical damage,manufacturing defect and faulty operation etc.Therefore,a coiled tubing fatigue life calculation and analysis software was developed on the Qt platform based on the fatigue life theories and massive empirical data at home and abroad.With this software,the effect of bending radius,wall thickness and internal pressure of the coiled tubing on its fatigue life were calculated and analyzed,and a feasibility testing was also performed.The analytical results indicated that this software could be used to effectively calculate the coiled tubing fatigue life values;the increase of internal pressure of coiled tubing will lead to the decrease of its fatigue life,but the decrease tendency will slow down gradually.However,the coiled tubing will lose its loading capacity when internal pressure reached certain point;a proper reel size could improve the life of coiled tubing;coiled tubing with large or varying wall thickness shall be recommended.The development of this software is of great guidance significance to the engineering applications and safety evaluations of coiled tubing.
作者
刘少胡
周浩
马卫国
辛永安
杨志成
杜珂
Liu Shaohu;Zhou Hao;Ma Weiguo;Xin Yongan;Yang Zhicheng;Du Ke(School of Mechanical Engineering,Yangtze University;Jianghan Machinery Research Institute Co.,Ltd.of CNPC)
出处
《石油机械》
北大核心
2020年第2期135-140,共6页
China Petroleum Machinery
基金
国家自然科学基金项目“连续管缺陷处细观-宏观损伤失效机制研究”(51974036)
“含缺陷连续管残余承载能力评估与分析方法研究”(51604039)。
关键词
连续管
疲劳寿命
软件开发
计算模块
coiled tubing
fatigue life
software development
computation module
