在复杂负荷下,钻井管的连接线的设计和机械性能分析具有不均的缩度
Hangming Liu1, Yongpeng Song1, Shenghua Hu1
1The Seventh Geological Brigade of Hubei Geological Bureau, Yichang, 443000, China.
Scientific reports
|December 27, 2024
概括
优化钻井管接头线与不平等的缩显著降低了应力度和增强连接强度. 这种设计提高了API NC38单肩线和双肩线的性能,防止过早故障.
科学领域:
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
- 石油工程是石油工程中的一个.
背景情况:
- 钻井管道接头是石油和天然气井的关键部件.
- 由于应力度,API NC38线程容易发生断裂故障.
- 优化线程设计对于提高钻井管接头可靠性至关重要.
研究的目的:
- 为了调查API NC38钻井管道接头的断裂故障.
- 分析不均的线设计对应力分布和机械性能的影响.
- 为了确定一个最佳的不平等的线结构,以提高连接强度.
主要方法:
- 提出了一种钻井管道连接线设计,其度不均.
- 分析了修改线程的应力分布和机械性能.
- 与使用有限元分析 (模拟) 的标准API线程进行性能比较.
主要成果:
- 在标准的API NC38单肩线 (SUT) 的最后一根接线根处高度集中的应力会导致早期的产量失败.
- 调整针线不平等的缩减轻NC38单 (SUT-II) 和双肩 (DUT-I) 线的应力,提高连接强度.
- 改变盒子线不均的收缩率显示了应力度和强度的有限改善.
- 与标准设计相比,SUT-II的压力减少了56.69%,DUT-I的压力减少了34.87%.
结论:
- 不平等的形针线设计有效地减少了应力度,并提高了钻井管的关节强度.
- 这种方法为SUT-II和DUT-I提供了显著的改进,指导API和专业线程的优化.
- 这些发现为提高钻井管道连接在苛刻应用中的可靠性和寿命提供了基础.
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