Analytical modelling of the hydraulic effect of hydrate deposition on transportability and plugging location in subsea gas pipelines.

Umuteme, Oghenethoja Monday; Islam, Sheikh Zahidul; Hossain, Mamdud; Karnik, Aditya

Abstract

Accurate prediction of the hydraulic effect of hydrate deposition and plug location is critical to the safety and operability of natural gas transport pipelines, especially for gas-dominant subsea pipelines where maintenance and intervention activities are more difficult. To achieve this, the present work improved an existing two-phase pressure drop relation due to friction, by incorporating the hydrates deposition rate into the equation. In addition, a model has been developed to predict the pipeline plugging time. The transient pressure drop predictions in the present study for all six cases at high and low velocities are within 4% mean relative error. Similar predictions by Di Lorenzo et al. are within 40% maximum relative error, while the mean relative error of the transient pressure drop predictions by Zhang et al. was 7.43%. In addition, the plugging flowtime model underpredicts the plugging time by a mean relative error of 9%.

Citation

UMUTEME, O.M., ISLAM, S.Z., HOSSAIN, M. and KARNIK, A. [2023]. Analytical modelling of the hydraulic effect of hydrate deposition on transportability and plugging location in subsea gas pipelines. Proceedings of the Institution of Mechanical Engineers, Part C: journal of mechanical engineering science [online], Online First. Available from: https://doi.org/10.1177/09544062231196986

• Journal Article Type: Article
• Acceptance Date: Aug 7, 2023
• Online Publication Date: Nov 17, 2023
• Deposit Date: Nov 24, 2023
• Publicly Available Date: Nov 24, 2023
• Journal: Proceedings of the Institution of Mechanical Engineers, Part C: journal of mechanical engineering science
• Print ISSN: 0954-4062
• Electronic ISSN: 2041-2983
• Publisher: SAGE Publications
• Peer Reviewed: Peer Reviewed
• DOI: https://doi.org/10.1177/09544062231196986
• Keywords: Hydrates deposition rates; Analytical modelling; Hydrates plugging flowtime; Hydraulic diameter; Transient pressure drop; Shear stress; Strain rate; Locating hydrate plug
• Public URL: https://rgu-repository.worktribe.com/output/2035094