What question did this study set out to answer?

The study aims to understand the effects of internal solitary waves on the dynamic behavior of a drill string-riser system.

April 12, 2026Proceedings of the Institution of Mechanical Engineers Part M Journal of Engineering for the Maritime Environment

Dynamic characteristics of a drilling riser considering drill string–riser collision under internal solitary waves

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The study aims to understand the effects of internal solitary waves on the dynamic behavior of a drill string-riser system.
Developed a physical model based on Hamilton’s principle.
Introduced an iterative collision-updating method for displacement evolution.
Conducted parametric analysis on tension ratio, weight on bit, wave amplitude, and pycnocline depth.
Drill string presence suppresses riser displacement increase but raises Von Mises stress.
Collision loads are concentrated in the upper section of the riser and shift with environmental changes.
Higher tension ratios reduce displacement but increase equivalent stress.
Wave amplitude increase correlates with higher maximum collision forces and displacements.

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Implication

This analysis demonstrates the impact of internal solitary waves on drilling riser displacement and stress levels, suggesting important design considerations.

Cite This Study

Fang et al. (2026) studied this question.

synapsesocial.com/papers/69db380f4fe01fead37c62e2 https://doi.org/10.1177/14750902261431758

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Implication

This analysis demonstrates the impact of internal solitary waves on drilling riser displacement and stress levels, suggesting important design considerations.

Dynamic characteristics of a drilling riser considering drill string–riser collision under internal solitary waves

Key Points

Discussion

Implication

Cite This Study

Dynamic characteristics of a drilling riser considering drill string–riser collision under internal solitary waves

Key Points

Discussion

Implication

Cite This Study