Evaluating Liquid Loading Using Multiphase Dynamic Flow Simulation in Complex Openhole Multilateral Gas Condensate Wells

2019 ◽  
Author(s):  
Harshil Saradva ◽  
Siddharth Jain ◽  
Masoud Al Hamadi ◽  
Kapil Kumar Thakur ◽  
Gunasekar Govindan ◽  
...  
Keyword(s):  
Flow Simulation ◽  
Gas Condensate ◽  
Dynamic Flow ◽  
Liquid Loading

Prediction of Transient Behaviors of Gas-Condensate Two-Phase Flow in Pipelines With Low Liquid Loading

2006 ◽  
Author(s):  
Daoming Deng ◽  
Jing Gong
Keyword(s):  
Flow Rate ◽  
Transient Flow ◽  
Two Phase Flow ◽  
Flow Behavior ◽  
Flow Simulation ◽  
Gas Condensate ◽  
Phase Flow ◽  
Liquid Loading ◽  
Long Distance ◽  
Two Phase

Transporting natural gas and gas condensate in a long distance pipeline occurs frequently during the development of offshore or desert gas condensate and/or oil fields. However, the thermohydraulic calculation of gas-condensate pipeline, especially transient flow simulation, is hitherto a challenging issue in the pipeline industry on account of a maze of complexities of pipeline undulation, changeable properties of fluid, and transfer of momentum, mass and heat. This study is intended to predict the transient flow behavior in gas-condensate pipelines. In the paper, a hydraulic and thermodynamic (such as phase behavior and properties) model for the analysis of transient gas-condensate two-phase flow in pipelines with low liquid loading is outlined. The hydraulic model is based on simplified “No Pressure Wave” model where the constitutive relation results from the Ottens et al (2001) correlation. An implicit method, the convergence and stability of which have been verified by example calculations, is utilized to solve the transient flow model equations of gas-condensate pipelines. In the end, the transient performances of low-liquid-loading gas-condensate two-phase non-isothermal flow in undulating pipelines, which are subjected to boundary conditions of increasing or decreasing inlet flow rate and specified outlet pressure with time, are numerically investigated. The results, such as pressure and liquid holdup profiles vs. time, and time evolutions of outlet condensate flow rate and accumulated liquid content etc., show that the presented model and numerical method for analyzing gas-condensate transient flow behaviors in pipelines looks reasonable.

Dynamic Flow Simulation to Study Flow Assurance Challenges in Water Alternating Gas WAG Wells

2016 ◽  
Author(s):  
Hassan Karimi ◽  
Erni Dharma Putra ◽  
Kapil Kumar Thakur ◽  
Rahel Yusuf ◽  
Azwan Shaharun ◽  
...  
Keyword(s):  
Flow Simulation ◽  
Flow Assurance ◽  
Dynamic Flow ◽  
Water Alternating Gas

scholarly journals Analysis of Bubble Growth in Supercritical CO2 Extrusion Foaming Polyethylene Terephthalate Process Based on Dynamic Flow Simulation

Polymers ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2799
Author(s):  
Shun Yao ◽  
Yichong Chen ◽  
Yijie Ling ◽  
Dongdong Hu ◽  
Zhenhao Xi ◽  
...  
Keyword(s):  
Polyethylene Terephthalate ◽  
Bubble Growth ◽  
Supercritical Co2 ◽  
Flow Simulation ◽  
The Finite Element Method ◽  
Melt Flow ◽  
Dynamic Flow ◽  
Foaming Process ◽  
Dynamic Rheological Properties ◽  
Extrusion Foaming

Bubble growth in the polymer extrusion foaming process occurs under a dynamic melt flow. For non-Newtonian fluids, this work successfully coupled the dynamic melt flow simulation with the bubble growth model to realize bubble growth predictions in an extrusion flow. The initial thermophysical properties and dynamic rheological property distribution at the cross section of the die exit were calculated based on the finite element method. It was found that dynamic rheological properties provided a necessary solution for predicting bubble growth during the supercritical CO2 polyethylene terephthalate (PET) extrusion foaming process. The introduction of initial melt stress could effectively inhibit the rapid growth of bubbles and reduce the stable size of bubbles. However, the initial melt stress was ignored in previous work involving bubble growth predictions because it was not available. The simulation results based on the above theoretical model were consistent with the evolution trends of cell morphology and agreed well with the actual experimental results.

Phase Re-Distribution and Heat Transfer in Gas/Condensate Flow Shut-In in a Deepwater Lazy-Wave Riser

2002 ◽  
Author(s):  
Y. Doreen Chin ◽  
K. Krishnathasan ◽  
I. Roberts
Keyword(s):  
Heat Transfer ◽  
Multiphase Flow ◽  
Pressure Effect ◽  
Internal Heat ◽  
Transient Behavior ◽  
Gas Condensate ◽  
Liquid Loading ◽  
Interfacial Mass Transfer ◽  
Key Factor ◽  
Internal Heat Transfer

The mechanisms of phase re-distribution of gas/condensate flow in a deepwater steel lazy-wave riser after system shutdown have been studied numerically. The investigated system consists of a 15-mile long subsea pipeline tieback to a floating vessel, via a 9,800-ft long lazy-wave production riser. The subsea well is located at 6,350 ft of water. The system is insulated, and transports a gas-condensate mixture with liquid loading of 10 stb/mmscfd. This study reveals that besides pressure, the internal heat transfer during system cool-down is a key factor for the phase re-distribution between gas and liquid, and along the system. The liquid holdup variations are caused by the interfacial mass transfer between gas-liquid interface and phase re-distribution due to the combined effects of gravitational and buoyancy forces. Fluid cool down temperature “overshoot” in the lazy wave riser valley during system cool down has been observed. The pressure effect on the cool down temperature overshoot has been studied. The phenomenon is discussed based on fundamental heat transfer, phase equilibrium, and multiphase flow principles. The lazy wave riser configuration is a promising option for deepwater development, and gas/condensate flow is a multiphase flow phenomenon commonly encountered in raw gas transportation. The results of this study improve the understanding of multiphase flow transient behavior in deepwater pipeline/riser systems, and benefits gas/condensate production system design.

A 3D Numerical Investigation on Droplets Distribution in a Wave-Plate Separator

2013 ◽  
Vol 842 ◽  
pp. 522-529
Author(s):  
Yong Lei Qu ◽  
Shi Bu ◽  
Bo Wan
Keyword(s):  
Gas Flow ◽  
Three Dimensional ◽  
Flow Simulation ◽  
Geometrical Model ◽  
Turbulent Dispersion ◽  
Liquid Loading ◽  
Wave Plate ◽  
Gas Liquid Flow ◽  
Set Up ◽  
Plate Separator

The gas-liquid flow in a wave-plate separator is extremely complex due to its three-dimensional characteristic. Numerical simulation accomplished by former investigators using two-dimensional model may be appropriate for the iteration of pressure drop, but they were far from accurate in prediction of removal efficiency. To fill the gap, a three dimensional geometrical model of wave-plate separator is set up in this paper, RNG k-ε model is employed to compute the gas phase flow field, and the droplet trajectories were predicted applying the Lagrangian method. The turbulent dispersion of droplets were simulated by discrete random walk model. Using the assumption of a constant liquid loading of gas flow, simulation were accomplished for six different inlet velocities and two different droplet sizes. The influence pattern of gravity together with gas velocity on droplets distribution and the overall removal efficiencies were obtained.

Production Optimization of Liquid Loading Problem in Offshore Niger Delta Gas Condensate Field

2019 ◽  
Author(s):  
Mohammed Bashir Abdullahi ◽  
A. D. I Sulaiman ◽  
Usman Abdulkadir ◽  
Ibraheem Salaudeen ◽  
Bashir Umar Shehu
Keyword(s):  
Niger Delta ◽  
Production Optimization ◽  
Gas Condensate ◽  
Liquid Loading ◽  
Loading Problem

Improving Production Efficiency of Liquid-Loading Gas Condensate wells with ESPs at North Urengoy Field

2017 ◽  
Author(s):  
Anton Epryntsev ◽  
Farid Minikaev ◽  
Alexey Sullagaev ◽  
Alexey Yazkov ◽  
Benik Khachaturyan ◽  
...  
Keyword(s):  
Production Efficiency ◽  
Gas Condensate ◽  
Liquid Loading
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