scholarly journals A stochastic analysis of steady state two-phase flow in heterogeneous media

2005 ◽  
Vol 41 (1) ◽  
Author(s):  
Mingjie Chen ◽  
Dongxiao Zhang ◽  
Arturo A. Keller ◽  
Zhiming Lu
Keyword(s):  
Steady State ◽  
Stochastic Analysis ◽  
Heterogeneous Media ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase

Stochastic Analysis of Immiscible Two-Phase Flow in Heterogeneous Media

SPE Journal ◽  
1999 ◽  
Vol 4 (04) ◽  
pp. 380-388 ◽  
Author(s):  
Zhang Dongxiao ◽  
Hamdi Tchelepi
Keyword(s):  
Stochastic Analysis ◽  
Heterogeneous Media ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Two Phase

Stochastic analysis of two-phase flow in porous media: II. Comparison between perturbation and Monte-Carlo results

1995 ◽  
Vol 19 (3) ◽  
pp. 261-280 ◽  
Author(s):  
Alaa Abdin ◽  
Jagath J. Kaluarachchi ◽  
Ching-Min Chang ◽  
Marian W. Kemblowski
Keyword(s):  
Porous Media ◽  
Monte Carlo ◽  
Stochastic Analysis ◽  
Two Phase Flow ◽  
Flow In Porous Media ◽  
Phase Flow ◽  
Two Phase

Analysis of Transient Two-Phase Flow in Pressure Safety Valve Outlet Headers

2018 ◽  
Author(s):  
Maral Taghva ◽  
Lars Damkilde
Keyword(s):  
Steady State ◽  
Shock Waves ◽  
High Speed ◽  
Two Phase Flow ◽  
Safety Valve ◽  
Strong Shock ◽  
Flow Property ◽  
Phase Flow ◽  
Transient Pressure ◽  
Two Phase

To protect a pressurized system from overpressure, one of the most established strategies is to install a Pressure Safety Valve (PSV). Therefore, the excess pressure of the system is relieved through a vent pipe when PSV opens. The vent pipe is also called “PSV Outlet Header”. After the process starts, a transient two-phase flow is formed inside the outlet header consisting of high speed pressurized gas interacting with existing static air. The high-speed jet compresses the static air towards the end tail of the pipe until it is discharged to the ambiance and eventually, the steady state is achieved. Here, this transient process is investigated both analytically and numerically using the method of characteristics. Riemann’s solvers and Godunov’s method are utilized to establish the solution. Propagation of shock waves and flow property alterations are clearly demonstrated throughout the simulations. The results show strong shock waves as well as high transient pressure take place inside the outlet header. This is particularly important since it indicates the significance of accounting for shock waves and transient pressure, in contrast to commonly accepted steady state calculations. More precisely, shock waves and transient pressure could lead to failure, if the pipe thickness is chosen only based on conventional steady state calculations.

Experimental, Numerical, and Statistical Investigation of Two Phase Flow in a Cylindrical Perforation Tunnel

2021 ◽  
Author(s):  
Ekhwaiter Abobaker ◽  
Abadelhalim Elsanoose ◽  
Mohammad Azizur Rahman ◽  
Faisal Khan ◽  
Amer Aborig ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Steady State ◽  
Statistical Analysis ◽  
Flow Rate ◽  
Gas Flow ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Gas Flow Rate ◽  
Two Phase ◽  
Flow Through

Abstract Perforation is the final stage in well completion that helps to connect reservoir formations to wellbores during hydrocarbon production. The drilling perforation technique maximizes the reservoir productivity index by minimizing damage. This can be best accomplished by attaining a better understanding of fluid flows that occur in the near-wellbore region during oil and gas operations. The present work aims to enhance oil recovery by modelling a two-phase flow through the near-wellbore region, thereby expanding industry knowledge about well performance. An experimental procedure was conducted to investigate the behavior of two-phase flow through a cylindrical perforation tunnel. Statistical analysis was coupled with numerical simulation to expand the investigation of fluid flow in the near-wellbore region that cannot be obtained experimentally. The statistical analysis investigated the effect of several parameters, including the liquid and gas flow rate, liquid viscosity, permeability, and porosity, on the injection build-up pressure and the time needed to reach a steady-state flow condition. Design-Expert® Design of Experiments (DoE) software was used to determine the numerical simulation runs using the ANOVA analysis with a Box-Behnken Design (BBD) model and ANSYS-FLUENT was used to analyses the numerical simulation of the porous media tunnel by applying the volume of fluid method (VOF). The experimental data were validated to the numerical results, and the comparison of results was in good agreement. The numerical and statistical analysis demonstrated each investigated parameter’s effect. The permeability, flow rate, and viscosity of the liquid significantly affect the injection pressure build-up profile, and porosity and gas flow rate substantially affect the time required to attain steady-state conditions. In addition, two correlations obtained from the statistical analysis can be used to predict the injection build-up pressure and the required time to reach steady state for different scenarios. This work will contribute to the clarification and understanding of the behavior of multiphase flow in the near-wellbore region.

MicroCT X-Ray Imaging of Hydrodynamic Dispersion under Steady-State Two-Phase Flow

2018 ◽  
Author(s):  
S. Hasan ◽  
V. Joekar-Niasar ◽  
H. Steeb ◽  
N. Karadimitriou ◽  
J. Godinho ◽  
...  
Keyword(s):  
Steady State ◽  
Two Phase Flow ◽  
Hydrodynamic Dispersion ◽  
Phase Flow ◽  
Two Phase ◽  
X Ray ◽  
X Ray Imaging
Sign in / Sign up

Export Citation Format

Share Document