Design optimization of OCTG premium connection system based on the effect of stabbing flank angle

This paper proposes a new premium connection system for oil country tubular goods with good durability under severe conditions. As premium connections are mainly stressed at the joints, proper design of threads is very important, and optimized parameter values are directly linked to the robustness o...

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Bibliographic Details
Published in:Journal of mechanical science and technology 2021, 35(2), , pp.545-561
Main Authors: Kim, Byeongil, Huang, Jie, Yoon, Jong-Yun
Format: Article
Language:English
Subjects:
Control
Design criteria
Design optimization
Design parameters
Dynamical Systems
Engineering
Industrial and Production Engineering
Joints
Mechanical Engineering
Oil field equipment
Original Article
Tubular goods
Vibration
기계공학
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Summary:This paper proposes a new premium connection system for oil country tubular goods with good durability under severe conditions. As premium connections are mainly stressed at the joints, proper design of threads is very important, and optimized parameter values are directly linked to the robustness of premium connections. Hence, we analyzed von Mises stress changes in the whole structure based on the changes in stabbing flank angle, upper stabbing flank corner radius, and lower stabbing flank corner radius. Additionally, the design criteria for the premium connection system were presented. The analytical results provided relationships between stresses and parameters that could be used as design conditions. The amount of von Mises stress received from the threaded connection depending on the change in each parameter was used to design an appropriate premium connection based on real-world field demand, cost, and structural efficiency.
ISSN:1738-494X
1976-3824
DOI:10.1007/s12206-021-0114-2