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[Display omitted] • An improved model for hydrate particles removal from surface is proposed. • Hydrate particle diameter influencing the critical velocity than the initial liquid bridge volume. • Hydrate particles decomposition happening in the removal process. Understanding the critical velocity at which hydrate particles can be removed from a solid surface is crucial for flow assurance issues. An improved model is proposed to predict the critical velocity in hydrate particle removal process by considering a deformed liquid bridge. In situ experiments were performed for validation, and it was observed that hydrate particle decomposition occurred during the removal process. The particle diameter was determined to be a more dominant factor influencing the critical velocity than the initial liquid bridge volume. The resulting confidence level was 95% within a 30% error, showing its robust capability for engineering applications. [ABSTRACT FROM AUTHOR]