特殊螺纹接头上扣螺纹过盈量设计  

Magnitude of Interference Design of Premium Thread Connection

作　　者：申昭熙 李德宁 谢建雷 戚宝建 张小佳 杨鹏 SHEN Zhaoxi;LI Dening;XIE Jianlei;QI Baojian;ZHANG Xiaojia;YANG Peng(State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials,CNPC Tubular Goods Research Institute,Xi′an,Shaanxi 710077,China;Tianjin Gas Storage Branch,PetroChina Dagang Oilfield Company,Tianjin 300280,China;CNPC Bohai Equipment Tianjin Steel Pipe Company,Tianjin 300280,China)

机构地区：[1]中国石油集团工程材料研究院有限公司,油气钻采输送装备全国重点实验室,陕西西安710077 [2]中国石油大港油田天津储气库分公司,天津300280 [3]中国石油集团渤海石油装备制造有限公司天津石油专用管分公司,天津300280

出　　处：《石油管材与仪器》2024年第1期68-71,共4页Petroleum Tubular Goods & Instruments

基　　金：中国石油天然气集团有限公司基础研究课题“万米超深层油气资源钻完井关键技术与装备研究”(编号:2022ZG06)。

摘　　要：针对特定工况要求设计的低钢级、薄壁油管特殊螺纹上扣扭矩较低问题,首先采用蒙特卡洛方法对不同加工偏差组合的接头进行有限元模拟分析,得到上扣螺纹过盈量与台肩扭矩的线性关系,由此初步确定满足工况要求的上扣螺纹过盈量设计值。然后利用实物上卸扣方法进行了试验验证。结果表明,利用有限元方法可快速分析实际特殊螺纹接头在不同上扣螺纹过盈量下的台肩扭矩分布,最大台肩扭矩与实物上卸扣试验结果基本一致。To design a premium connection of low grade and thin wall thickness tubing with lower makeup torque,this paper first analyzes the connections with various combination of machining errors,finds the linear correlation between the thread magnitude of interference and shoulder torque with FEA Monte Carlo simulation and provides the initial thread magnitude of interference of the designed premium connection.And then,we validate and determine the thread magnitude of interference and makeup torque with full scale test.The results show that the distribution of the shoulder torque with different thread magnitude of interference can be obtained from FEA method and the biggest shoulder torque is consistent with the torque from the full scale makeup test.

关 键 词：螺纹过盈量 锥度 台肩扭矩 最大扭矩 特殊螺纹接头 

分 类 号：TE931[石油与天然气工程—石油机械设备]