scholarly journals Numerical Simulation of Transient Multiphase Flow in a Five-Strand Bloom Tundish during Ladle Change

Metals ◽  
2018 ◽  
Vol 8 (2) ◽  
pp. 146 ◽  
Author(s):  
Hua Zhang ◽  
Ronghua Luo ◽  
Qing Fang ◽  
Hongwei Ni ◽  
Xiao Song
Keyword(s):  
Numerical Simulation ◽  
Multiphase Flow ◽  
Transient Multiphase Flow

scholarly journals Computational Investigation of Inclusion Removal in the Steel-Refining Ladle Process

Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 1048
Author(s):  
Xipeng Guo ◽  
Joel Godinez ◽  
Nicholas J. Walla ◽  
Armin K. Silaen ◽  
Helmut Oltmann ◽  
...  
Keyword(s):  
Multiphase Flow ◽  
Porous Plug ◽  
Cfd Modeling ◽  
Balance Model ◽  
Computational Investigation ◽  
Inclusion Removal ◽  
Inclusion Interaction ◽  
Computational Fluid Dynamics Cfd ◽  
Steel Refining ◽  
Transient Multiphase Flow

In a steel-refining ladle, the properties of manufactured steel can be notably degraded due to the presence of excessive inclusions. Stirring via gas injection through a porous plug is often used as part of the steel-refining process to reduce these inclusions. In this paper, 3D computational fluid dynamics (CFD) modeling is used to analyze transient multiphase flow and inclusion removal in a gas-stirred ladle. The effects of gas stirring with bubble-inclusion interaction are analyzed using the Euler–Euler approach for multiphase flow modeling, while the effects of inclusions aggregation and removal are modeled via a population balance model (PBM).

Modelling Complex Well Behaviour in the Field Using a Transient Multiphase Flow Simulator (Russian)

2018 ◽  
Author(s):  
Kanat Karatayev ◽  
Beibit Bissakayev ◽  
Tamer Saada ◽  
Benjamin Madeley ◽  
Alberto Brancolini ◽  
...  
Keyword(s):  
Multiphase Flow ◽  
Flow Simulator ◽  
Transient Multiphase Flow ◽  
Complex Well

Modelling Complex Well Behaviour in the Field Using a Transient Multiphase Flow Simulator

2018 ◽  
Author(s):  
Kanat Karatayev ◽  
Beibit Bissakayev ◽  
Tamer Saada ◽  
Benjamin Madeley ◽  
Alberto Brancolini ◽  
...  
Keyword(s):  
Multiphase Flow ◽  
Flow Simulator ◽  
Transient Multiphase Flow ◽  
Complex Well

Numerical simulation on the erosion wear of a multiphase flow pipeline

2017 ◽  
Vol 96 (5-8) ◽  
pp. 1705-1713 ◽  
Author(s):  
Guofu Ou ◽  
Kainian Bie ◽  
Zhijian Zheng ◽  
Geping Shu ◽  
Chao Wang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Multiphase Flow ◽  
Erosion Wear

Unloading Frac Hits in Gas Wells: How Does the Nitrogen Injection Rate and Pressure Affect the Unloading Process?

2021 ◽  
Author(s):  
Miguel Angel Cedeno
Keyword(s):  
Multiphase Flow ◽  
Flow Rate ◽  
Injection Pressure ◽  
Injection Rate ◽  
Gas Wells ◽  
Eagle Ford Shale ◽  
Eagle Ford ◽  
Nitrogen Injection ◽  
Injection Flow ◽  
Transient Multiphase Flow

Abstract The unconventional resources development has grown tremendously as a result of the advancement in horizontal drilling technology coupled with hydraulic fracturing. However, as more wells are drilled and fractured close to each other, frac hits have become a major challenge in these wells. The aim of this work is to investigate the effect of nitrogen injection flow rate and pressure on unloading frac hits gas wells in transient multiphase flow. A numerical simulation model was created using a transient multiphase flow simulator to mimic the unloading process of frac hits by injecting nitrogen from the surface through the annulus section of the well. Many simulation cases were created and analyzed to comprehend the effect of the nitrogen injection rate and pressure on the unloading of frac hits. The model mimicked real field data from currently active well in the Eagle Ford Shale. The results showed that as the nitrogen injection pressure increases, the nitrogen volume and the time to unload the frac hits decrease. On the other hand, increasing the injection rate of nitrogen will increase the nitrogen volume required to unload the frac hits. In addition, the time to unload frac hits will be decreased as the nitrogen injection rate increases. These results indicate that the time required to unload frac hits will be minimized if higher flow rates of nitrogen were utilized. Nonetheless, the volume of nitrogen required to unload the frac hits will be maximized. An important observation to highlight is that the operators can save money by reducing the time for injecting nitrogen. This observation was verified when increasing the injection pressure in the frac hit well in the Eagle Ford Shale, the time of injection was reduced 20%. This study presents the effects of nitrogen injection flow rate and injection pressure for unloading frac hits in gas wells. Due to the lack of published studies about this topic, this work can serve as a practical guideline for unloading frac hits in gas wells.

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