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Keywords: simulation
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Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 10–13, 2022
Paper Number: PSIG-2225
... Abstract Fast turnaround on individual gas and liquid simulations can be crucial for critical operational or planning decisions, however complex transient simulations for large systems can be slow. Surge analysis studies can be slow too, due to the necessarily small time steps and knot spacing...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 3–7, 2021
Paper Number: PSIG-2112
... in a straight pipe with 1-inch (25.4 mm) ID or its passage over a Tee junction is investigated. Through CFD simulations, multiphase flow characteristics such as the water distribution around the pig are examined. Afterward, based on the water concentration, the phase-wetting condition would be identified which...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 3–7, 2021
Paper Number: PSIG-2115
... energy sustainable development lng compressed natural gas engineering simulation power plant operation electricity network university compressor station surplus hydrogen scenario node psig 2115 gas network power-to-ga facility curtailment generator injection power system equation...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 14–17, 2019
Paper Number: PSIG-1908
... this is very high. The transient surge pressures created in these cases can become extreme to the point of exceeding the maximum operating pressures of the pipe. When performing transient simulations, it is important to consider the fluid with higher viscosities that have been kept in the pipes...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 14–17, 2019
Paper Number: PSIG-1909
... originally designed as an import terminal. Alongside the technical challenge of these studies; a key factor was generating justifiable rationalisation of all permutations of operating scenarios into a manageable quantity of worst-case simulations for a multi-tank and multi-jetty site. Combined...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 14–17, 2019
Paper Number: PSIG-1910
... separation equation satya mokamati psig 1910 hamed ghasvari jahromi simulation pipeline logic programming © Copyright 2019, PSIG, Inc. This paper was prepared for presentation at the PSIG Annual Meeting held in London, England, 14 May 17 May 2019. This paper was selected for presentation...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 14–17, 2019
Paper Number: PSIG-1912
.... We will talk about our experience of creating a tool that assists control room dispatchers in quick reaction to changing transport situation. This tool we call Net Schedule Management (or NSM in short) and it consists of two modules - one that archives a gas day simulation and cleans bad SCADA data...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 14–17, 2019
Paper Number: PSIG-1915
... controllers or check valves is often assumed. However, these simplifications can lead to inapplicable solutions. The aim of this article is to optimize the transition between two steady states using a sufficiently realistic simulation, with a complete optimization lasting no more than 30 min. It means to get...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 14–17, 2019
Paper Number: PSIG-1918
... and is described in the national infrastructure plan developed by the Energy Ministry, Secretaría de Energía (SENER). The Mexican National Center for Natural Gas Control, CENAGAS, required a mechanism to include the new agreements in pipeline simulations. This paper explains the pipeline simulation techniques...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 14–17, 2019
Paper Number: PSIG-1928
... knowledge of risk calculations, pipeline simulations and assumptions are a prerequisite to be able to evaluate whether a change is significant with regards to risk level. The pipeline risk assessment must be well known by the operator to ensure solid risk management for a pipeline in operation. This implies...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 15–18, 2018
Paper Number: PSIG-1802
.... This paper explores the multiphase model and computation algorithms used to simulate multiphase flow with sand particles through a subsea pipeline to predict the pressure gradient, transport velocity, and sand deposition. Being able to predict sand accumulation and understanding real-time sand velocity...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 15–18, 2018
Paper Number: PSIG-1806
.... The agent must properly react when offtakes from the network change in time. Learning process is simulation based and it utilizes an appropriate simulator of transient gas flow. Employed reinforcement learning methods must cope with continuity of space and actions. It is shown that, despite the long...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 15–18, 2018
Paper Number: PSIG-1808
... pressure midstream oil & gas valve closing time relief valve transient pressure pressure wave simulation terminal 1 valve valve closure crude oil terminal 2 flow path closing time pump station © Copyright 2018, PSIG, Inc. This paper was prepared for presentation at the PSIG Annual...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 15–18, 2018
Paper Number: PSIG-1811
... gas. During the front-end engineering and design (FEED) phase of a recent project, dynamic multiphase pipeline simulation showed that the oil pipeline would experience slugging across a wide range of operating conditions when fuel gas is spiked into the oil export pipeline. To mitigate slugging...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 15–18, 2018
Paper Number: PSIG-1812
... of a light oil to an offshore heavy oil pipeline. The key success parameter to improve and optimize the existing wax control strategy has been to better utilize operational data together with update of simulations, fluid data and pig design. The result illustrates the importance of continuous monitoring...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 15–18, 2018
Paper Number: PSIG-1814
... ABSTRACT We follow up on our previous paper describing an API RP 1130 compliant test method that imposes simulation-based leak perturbation signatures on archived SCADA data. The perturbation-based simulated leak testing (PSLT) approach combines a faithful representation of the leak...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 15–18, 2018
Paper Number: PSIG-1816
... these complex natural gas pipeline total value streams and achieves the stated objectives by integrating turbomachinery algorithms into a high-fidelity simulator to improve total model and simulation accuracy. Through much trial and error, the authors discovered how to account for the physical network size...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 9–12, 2017
Paper Number: PSIG-1701
... compositions, the dynamic network simulation combined with forecasting of behavior all sources and offtakes, is necessary. The article describes model of full chain of calculation. At entries, there are: productions, storages and interconnectors with more less stable gas compositions and LNG Terminals where...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 9–12, 2017
Paper Number: PSIG-1705
... fall below critical even for a short time, and that can cause problems in the whole grid. In order to mitigate a risk of such a situation, users can model these events and prepare the grid for emergencies, for example by a small house gas storage. Pipeline simulators traditionally do not model...
Proceedings Papers

Paper presented at the PSIG Annual Meeting, May 9–12, 2017
Paper Number: PSIG-1712
... of a simulation based performance test of a gas pipeline. The method presented offers a practical tool to validate pipeline performance by evaluating the fundamental physical parameters. This method can also be used in assessing the pipeline hydraulics conditions for potential corrosion issues (ID change...

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