Numerical Simulation of Elbow Erosion in Shale Gas Fields under Gas-Solid Two-Phase Flow

Hong, Bingyuan; Li, Xiaoping; Li, Yanbo; Yu, Li; Yu, Yafeng; Wang, Yumo; Gong, Jing; Ai, Dihui

doi:10.3390/en14133804

Cited by 16 publications

(8 citation statements)

References 21 publications

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“…We have carried out erosion experiments in the previous research and the specific experimental parameters are shown in our previous work [3]. The above numerical models are compared and verified with experimental data, as shown in Figure 1.…”

Section: Model Validationmentioning

confidence: 91%

“…Shale gas is a kind of unconventional natural gas existing in shale and mainly composed of methane, regarding as a clean and efficient energy resource [1]. In the process of shale gas exploitation, there are many challenges, one of which is the erosion of sand and gravel [2,3]. Although some filtering measures are taken to filter out solid particles in the produced gas during shale gas exploitation, it still cannot completely prevent the passage of some small particles [4].…”

Section: Introductionmentioning

confidence: 99%

“…The erosion under different flow patterns was considered. In our previous work [3], an integrated CFD-DPM model was established to investigate the erosion of the 90 • elbow in a shale gas field under gas-solid two-phase flow, including the realizable k-ε turbulence model, discrete phase model, and erosion rate prediction model. A new correlation was developed, which included four dimensionless groups, namely Reynolds number, diameter ratio, density ratio, and particle number.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation of Gas-Solid Two-Phase Erosion for Elbow and Tee Pipe in Gas Field

Hong

et al. 2021

Energies

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Erosion caused by solid particles in a pipeline is one of the main problems endangering the safety production of the oil and gas industry, which may lead the equipment to malfunction or even fail. However, most of the previous studies focused on the standard elbow, and the erosion law of right-angle elbow and blind tee is rarely reported in the literature. This work aims to investigate the erosion law of different pipeline structures including 90° elbow, right-angle pipe, and tee pipe based on the production characteristics and engineering parameters of the gas field. An integrated CFD-DPM method is established including a realizable k-ε turbulence model, discrete phase model, and erosion rate prediction model. The accuracy of the model is evaluated by a series of experimental data of flow conditions of our previous work. Further, the erosion rate, pressure distributions, and particle trajectories in 90° elbow, right-angle pipe, and tee pipe under different flow velocities, particle mass flow rate, pipe diameter are investigated by applying the presented model. The results show that the blind tee has the most obvious growth rate, and the most serious erosion is located in the blind end of the pipe wall. The maximum erosion rate of the 1.5D is greater than that of the 3D elbow as a whole, and the 1.5D elbow is more concentrated in the serious erosion area. Furthermore, the erosion rate of the bend weld is much greater than that of the straight pipe weld. This study can provide a basis for the selection of different structural pipe fittings, thereby reducing the pipeline erosion rate and improving the integrity of the management of gas pipelines.

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Section: Model Validationmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation of Gas-Solid Two-Phase Erosion for Elbow and Tee Pipe in Gas Field

Hong

et al. 2021

Energies

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“…Studies have found that when the attack angle of solid particles is 30°, the impact on steel is the greatest. Hong et al 15 studied the erosion of a 90° elbow in a shale gas field under gas-solid two-phase flow, in which the effects of six important factors on the maximum erosion rate were analyzed, including gas velocity, the mass flow rate and shape coefficient of sand particles, particle diameter, pipeline diameter, and the elbow radius of curvature. It is not difficult to find from the above research that the current researchers have little research on the erosion law of the wellhead device of the coal underground gasification medium and high temperature production well.…”

Section: Introductionmentioning

confidence: 99%

Experimental and simulation analysis of erosion law of crude gas production channel in underground coal gasification production wellhead

Tang

Wang

Xin

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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In underground coal gasification, crude gas carrying coal ash and cinder has a serious significant erosion effect on the gas extraction area of a wellhead device. To study the erosion of the wellhead device, based on the gas-solid two-phase flow theory, this study uses the discrete phase model to describe the kinematics and trajectories of discrete solid particles and uses the Reynolds-averaged Navier-Stokes equation to calculate the fluid dynamics of the continuous phase. This study determines the main erosion position and the maximum erosion angle range of the wellhead device through numerical analysis, as well as the influence of the changes in solid particle size, particle mass flow rate, and crude gas flow rate on the erosion rate, and predicts the service lifetime of the small four-way and side valve I. The gas-solid erosion experiment verified the maximum erosion angle of the wellhead device. The experimental results were consistent with the numerical analysis results. This study also proposes an optimization method of surfacing to reduce the erosion of gas-solid two-phase flow on wellhead devices. The results show that the inner walls of the small four-way and side valve I are the most eroded. Factors such as particle size, particle mass flow rate, and crude gas flow rate have a greater impact on the erosion rate of the device, and the particle size has the greatest impact. Surfacing the severely eroded area of the wellhead device can effectively reduce the erosion and wear of the wellhead device caused by the gas-solid two-phase flow. This study provides guidance for the reasonable prediction and effective protection of severe erosion areas of wellhead devices.

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“…Due to the importance of erosion, many researchers have carried out various experimental and simulation studies to determine the influencing factors of erosion severity. Hong et al [3] analyzed the influence of gas flow rate, solid mass flow rate, particle diameter, and other factors on the maximum erosion rate. It was found that the pipe diameter and elbow curvature radius were negatively correlated with the maximum erosion rate.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Erosion Wear for Continuous Elbows in Different Directions

Zeng

Wang

2022

Energies

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The purpose of the present study is to simulate the continuous bend erosion process in different directions, using the dense discrete particle model (DDPM). The influence of the length of the straight pipe in the middle of the continuous bend is investigated. The Rosin–Rammler method is introduced to define the diameter distribution of erosion particles, which is theoretically closer to the actual engineering erosion situation. The numerical model is based on the Euler–Lagrange method, in which the continuous phase and the particle phase are established on a fixed Euler grid. The Lagrange model is used to track the particles, and the interaction between particles is simulated by particle flow mechanics theory. The velocity field distribution, pressure variation, and turbulent kinetic energy of gas–solid two-phase flow, composed of natural gas and gravel in the pipeline, are studied. The simulation results, using the one-way coupled DPM and the four-way coupled DDPM, are compared and analyzed. The results show that the DDPM has good accuracy in predicting the distribution of the continuous bend erosion processes in different directions. The erosion rates of particles with an average distribution size of 50 μm are significantly increased (8.32 times), compared with that of 10 μm, at the same gas transmission rate. It is also indicated that it is important to consider the impact between particles and the coupling between fluid and particles in the erosion simulation of the continuous elbow when using the CFD method.

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Numerical Simulation of Elbow Erosion in Shale Gas Fields under Gas-Solid Two-Phase Flow

Cited by 16 publications

References 21 publications

Numerical Simulation of Gas-Solid Two-Phase Erosion for Elbow and Tee Pipe in Gas Field

Numerical Simulation of Gas-Solid Two-Phase Erosion for Elbow and Tee Pipe in Gas Field

Experimental and simulation analysis of erosion law of crude gas production channel in underground coal gasification production wellhead

Numerical Simulation of Erosion Wear for Continuous Elbows in Different Directions

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