Transient multiphase flow phenomena—such as cavitation, gas release, and pressure wave propagation—are critical challenges in oil and gas pipeline operations. These events, often triggered by sudden pump shutdowns or valve operations, can lead to equipment damage, production losses, and safety hazards. Accurate and stable simulation of such transients is essential for flow assurance, system design, and real-time decision-making in hydrocarbon transport networks. This study introduces a simulation framework based on the Post-Extrapolation Method (PEM), a numerical scheme developed to compute pressure and void fraction at specified time steps without requiring interpolation. PEM is applied to simulate one-dimensional, isothermal, transient multiphase flow representative of upstream and midstream oil and gas pipeline systems. Model validation is conducted against a well-established experimental benchmark involving cavitation and gas release phenomena. The results from PEM confirm its accuracy, stability, and suitability for modeling complex multiphase transients in oil and gas pipelines, offering a robust tool for engineers and operators.
| Published in | International Journal of Oil, Gas and Coal Engineering (Volume 13, Issue 5) |
| DOI | 10.11648/j.ogce.20251305.11 |
| Page(s) | 74-83 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2025. Published by Science Publishing Group |
Multiphase Flow, Cavitation, Post-Extrapolation Method, Pipeline Transients, Gas Release, Flow Assurance, PEM Simulation, Valve Closure, CFD Validation
| [1] |
APA Style
Estuti, A. A. (2025). Post-Extrapolation Method for Simulating Unsteady Multiphase Flow in Oil and Gas Transport Pipelines. International Journal of Oil, Gas and Coal Engineering, 13(5), 74-83. https://doi.org/10.11648/j.ogce.20251305.11
ACS Style
Estuti, A. A. Post-Extrapolation Method for Simulating Unsteady Multiphase Flow in Oil and Gas Transport Pipelines. Int. J. Oil Gas Coal Eng. 2025, 13(5), 74-83. doi: 10.11648/j.ogce.20251305.11
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Download@article{10.11648/j.ogce.20251305.11,
author = {Abdalla Ali Estuti},
title = {Post-Extrapolation Method for Simulating Unsteady Multiphase Flow in Oil and Gas Transport Pipelines},
journal = {International Journal of Oil, Gas and Coal Engineering},
volume = {13},
number = {5},
pages = {74-83},
doi = {10.11648/j.ogce.20251305.11},
url = {https://doi.org/10.11648/j.ogce.20251305.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ogce.20251305.11},
abstract = {Transient multiphase flow phenomena—such as cavitation, gas release, and pressure wave propagation—are critical challenges in oil and gas pipeline operations. These events, often triggered by sudden pump shutdowns or valve operations, can lead to equipment damage, production losses, and safety hazards. Accurate and stable simulation of such transients is essential for flow assurance, system design, and real-time decision-making in hydrocarbon transport networks. This study introduces a simulation framework based on the Post-Extrapolation Method (PEM), a numerical scheme developed to compute pressure and void fraction at specified time steps without requiring interpolation. PEM is applied to simulate one-dimensional, isothermal, transient multiphase flow representative of upstream and midstream oil and gas pipeline systems. Model validation is conducted against a well-established experimental benchmark involving cavitation and gas release phenomena. The results from PEM confirm its accuracy, stability, and suitability for modeling complex multiphase transients in oil and gas pipelines, offering a robust tool for engineers and operators.},
year = {2025}
}
TY - JOUR T1 - Post-Extrapolation Method for Simulating Unsteady Multiphase Flow in Oil and Gas Transport Pipelines AU - Abdalla Ali Estuti Y1 - 2025/12/24 PY - 2025 N1 - https://doi.org/10.11648/j.ogce.20251305.11 DO - 10.11648/j.ogce.20251305.11 T2 - International Journal of Oil, Gas and Coal Engineering JF - International Journal of Oil, Gas and Coal Engineering JO - International Journal of Oil, Gas and Coal Engineering SP - 74 EP - 83 PB - Science Publishing Group SN - 2376-7677 UR - https://doi.org/10.11648/j.ogce.20251305.11 AB - Transient multiphase flow phenomena—such as cavitation, gas release, and pressure wave propagation—are critical challenges in oil and gas pipeline operations. These events, often triggered by sudden pump shutdowns or valve operations, can lead to equipment damage, production losses, and safety hazards. Accurate and stable simulation of such transients is essential for flow assurance, system design, and real-time decision-making in hydrocarbon transport networks. This study introduces a simulation framework based on the Post-Extrapolation Method (PEM), a numerical scheme developed to compute pressure and void fraction at specified time steps without requiring interpolation. PEM is applied to simulate one-dimensional, isothermal, transient multiphase flow representative of upstream and midstream oil and gas pipeline systems. Model validation is conducted against a well-established experimental benchmark involving cavitation and gas release phenomena. The results from PEM confirm its accuracy, stability, and suitability for modeling complex multiphase transients in oil and gas pipelines, offering a robust tool for engineers and operators. VL - 13 IS - 5 ER -
Department of Major Projects, National Oil Corporation (NOC), Tripoli, Libya
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