Dynamic modeling and simulation verification of deepwater riser-BOP stack coupled system

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (11) : 1-8.

CHANG Yuanjiang, WANG Shichao, LI Jian, LIU Xiuquan

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Abstract

In the process of deepwater drilling, the riser and blowout preventer system are an essential part of the entire operation process. Due to many risks involved in the operation process, therefore, establishing an accurate mechanical analysis model of the coupling system between riser and BOPs, accurately analyzing its mechanical behavior and performance, is of great significance for guiding the safety of drilling operations. At present, most people only focus on independent modeling of the riser and ignore the potential impact of the blowout preventer group, which will lead to differences between the established model and the actual situation, and making it difficult to accurately analyze the mechanical properties of the riser system. This paper puts forward the rigid-flexible coupling concept of riser and BOPs, derives the kinetic energy and potential energy of the coupling system, establishes the theoretical model by Lagrange method, and uses Newmark- β Perform numerical calculations on the dynamic model using the direct integration method. A simulation modeling was established using ADAMS software to conduct comparative analysis of dynamic response under different operating conditions. The results indicate that the lateral displacement envelope and bending moment envelope of the riser obtained from the theoretical model in this paper, as well as the lateral displacement time history curve and bottom bending moment time history curve of the middle node of the riser, are in good agreement with the ADAMS simulation results, indicating the importance of the theoretical model in this paper, which can provide reference and support for the design and analysis of risers in China.

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Deepwater riser / BOPs / rigid-flexible coupled / Simulation calculation / dynamic response analysis

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CHANG Yuanjiang, WANG Shichao, LI Jian, LIU Xiuquan. Dynamic modeling and simulation verification of deepwater riser-BOP stack coupled system[J]. Journal of Vibration and Shock, 2024, 43(11): 1-8

References

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