特殊扣专用螺纹脂的制备及研究  

Preparation and Performance of Thread Compound for Premium Connetions

作　　者：贺波 孙奇 王荣敏[3] 田峰 余志 张娟涛 HE Bo;SUN Qi;WANG Rongmin;TIAN Feng;YU Zhi;ZHANG Juantao(CNPC Tubular Goods Research Institute,Xi'an,Shaanxi 710077,China;PetroChina Yumen Oilfield Huanqing Branch,Jiuquan,Gansu 735215,China;Oilfield Development Division of PetroChina Changqing Oilfield Company,Xi'an,Shaanxi 710018,China)

机构地区：[1]中国石油集团石油管工程技术研究院,陕西西安710077 [2]中国石油天然气股份有限公司玉门油田环庆分公司,甘肃酒泉735215 [3]中国石油天然气股份有限公司长庆油田分公司油田开发事业部,陕西西安710018

出　　处：《石油管材与仪器》2021年第4期16-19,共4页Petroleum Tubular Goods & Instruments

摘　　要：针对特殊扣接头设计了2种螺纹脂,通过物理化学试验和全尺寸实验测试其理化性能、润滑性能和抗磨损性能。测试结果表明,2种螺纹脂的理化性能均符合API 5A3的规定;2种螺纹脂的平均摩擦系数稳定,分别为0.09和0.08,且摩擦系数受试验力变化的影响很小;在特殊扣接头螺纹表面均匀涂抹2种螺纹脂后,两者的上扣曲线皆表现出典型的3个阶段,且拐点明显,位于合理的扭矩范围内。研究结论是1#螺纹脂在上卸扣过程中能够形成保护膜,对螺纹表面起到良好的保护作用,而2#螺纹脂的抗磨性较差。1#螺纹脂并不含有重金属,且其组成成分对环境危害很小,可以作为环保型特殊扣接头专用螺纹脂,具有广泛的应用前景。Two kinds of thread compounds were designed for premium connections.The physical and chemical properties,lubrication performance and wear resistance of as-prepared compounds were measured by physical and chemical experiments and full-scale experiments.The test results reveal that the physical and chemical properties of the two thread compounds meet the requirements of API 5A3.The average friction coefficients of the two thread compounds are 0.09 and 0.08 respectively,which are so stable that little affected by the varies of test forces.When these two thread compounds are evenly applied to the thread surface of premium connections,there are three typical stages in the torque-rotation curves of the both.Moreover,the inflection point is obvious,which is in the reasonable torque range.It is concluded that the 1#thread compound possesses excellent wear resistance due to the formation of a protective film to prevent thread surface from wearing during the makeup and breakout processes,while the 2#thread compound shows a poor wear resistance performance.Furthermore,all components of 1#thread compound without any heavy metals are less harmful to the environment which can be applied as environmentally-friendly thread compound for premium connections.

关 键 词：润滑性 抗磨性 环保型 螺纹脂 特殊扣接头 

分 类 号：TE39[石油与天然气工程—油气田开发工程]