Analysis of Vapor-Liquid Equilibrium Parameters of Multicomponent Hydrocarbon Mixtures Using Cubic Equations of State (Russian)

Isaeva, A. V.; Grushnikov, Ilya; Dobrozhanskiy, Vladimir

doi:10.2118/191619-18rptc-ru

Cited by 4 publications

(2 citation statements)

References 2 publications

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“…However, the workload of the experimental method to determine the physical parameters of gas mixtures considering phase changes is huge. For this reason, we consider the use of Hysys to calculate the physical parameters of the gas mixture combined with the experimental method of verification 28,29 . Hysys provides a powerful physical properties calculation package, which is based on data from the world‐renowned physical properties data system, and is useful in cases where measured physical properties are not available 30 .…”

Section: Introductionmentioning

confidence: 99%

“…For this reason, we consider the use of Hysys to calculate the physical parameters of the gas mixture combined with the experimental method of verification. 28,29 Hysys provides a powerful physical properties calculation package, which is based on data from the worldrenowned physical properties data system, and is useful in cases where measured physical properties are not available. 30 A key problem is the selection of Hysys calculation model.…”

Section: Introductionmentioning

confidence: 99%

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Study of phase and physical property changes during gas lift injection of high CO₂‐content associated gas in the offshore M oil field

Chen

Xing

Fan

et al. 2023

Energy Science & Engineering

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The gas lift in the offshore M field will be performed with high CO 2 -content associated gas, but the change of wellbore temperature and pressure during the injection process will lead to the change of phase and physical parameters of associated gas, which has a great impact on the design of gas lift. To ensure the smooth implementation of gas lift in the offshore M field, this paper conducts a study on the physical parameters of associated gas considering the change of CO 2 phase state. We obtained the density, viscosity, compression factor, constant pressure specific heat capacity, thermal conductivity, and Joule Thomson coefficient at each temperature and pressure by Hysys calculation, and regression analysis to obtain the regression model of the physical parameters; finally, the regression model was compared with the flash experiment and Hysys calculation results. The results show that the CO 2 phase change has a large influence on the physical parameters; R 2 > 0.8, which indicates that the regression model has sufficient reliability; the results of the comparison show that the empirical formulas of all physical properties have sufficient accuracy and superiority except Joule-Thomson coefficients. In addition, the empirical formula of the Joule-Thomson coefficient also has good accuracy and superiority at the pressure not exceeding 22 MPa. The study of phase changes and physical parameters of associated gas with high CO 2 content provides a basis for subsequent gas lift design in the offshore M field and multiphase flow calculations in the wellbore during the gas lift. Although this study is only applicable to this sample, it also provides a feasible research method for other samples.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study of phase and physical property changes during gas lift injection of high CO₂‐content associated gas in the offshore M oil field

Chen

Xing

Fan

et al. 2023

Energy Science & Engineering

View full text Add to dashboard Cite

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Numerical investigation on acoustic cavitation characteristics of an air-vapor bubble: Effect of equation of state for interior gases

Qin

Lei

Chen

et al. 2023

Ultrasonics Sonochemistry

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Numerical Simulation of Hydrocarbon Mixtures Mass Transfer Processes and Flow in a Reservoir Rock

Grushnikov

2019

Day 3 Thu, October 24, 2019

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Currently, a number of software products (PVTSim, WinProp CMG, Aspen HYSYS, etc.) are used in the oil and gas industry, simulating the interfacial mass exchange in natural oils, gas condensate mixtures, etc. Existing software products use the vapor-liquid equilibrium calculation methods (flash-calculations) based on various cubic equations of state for the hydrocarbon mixtures. Peng–Robinson and Soave–Redlich–Kwong equations of state are primarily used in these products. Within work (1), the author of current work created a software package in the Python language that can carry out vapor-liquid equilibrium numerical simulations for hydrocarbon mixtures (the paraffin series was considered) using three different cubic equations of state: Peng–Robinson, Soave–Redlich–Kwong and Brusilovskiy. The development of this software package allowed comparison the vapor-liquid equilibrium parameters for hydrocarbon mixtures calculated using these three equations of state. The vapor-liquid equilibrium calculation for multicomponent hydrocarbon systems is also carried out in the numerical simulation of physicochemical processes in hydrocarbon deposits (simulators Eclipse 300, CMG GEM, etc.). Such calculations are important when the project to develop hydrocarbon deposits involves the injection of multicomponent gas mixtures ("fat" gas, air, etc.) in order to increase oil recovery. Here, using the created software package, we discuss how each of the three equations of state impact numerical simulation results of mass transfer processes between liquid and gas phases under fixed thermobaric conditions. The calculations help analyze how the choice of equation impacts simulation's results when extracting hydrocarbons. The result of this work was the development of a software package for calculating the PVT parameters for multicomponent hydrocarbon systems in a compositional model based on the cubic equation of state (Peng–Robinson and Soave–Redlich–Kwong). The thermodynamic characteristics, such as density, viscosity and phase component composition, were calculated based on setting the total component composition, equation of state, pressure and temperature. After that, the results of the developed software package were compared with the results obtained using the popular software products for calculating the PVT properties for multicomponent hydrocarbon systems.

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Analysis of Vapor-Liquid Equilibrium Parameters of Multicomponent Hydrocarbon Mixtures Using Cubic Equations of State (Russian)

Cited by 4 publications

References 2 publications

Study of phase and physical property changes during gas lift injection of high CO₂‐content associated gas in the offshore M oil field

Study of phase and physical property changes during gas lift injection of high CO₂‐content associated gas in the offshore M oil field

Numerical investigation on acoustic cavitation characteristics of an air-vapor bubble: Effect of equation of state for interior gases

Numerical Simulation of Hydrocarbon Mixtures Mass Transfer Processes and Flow in a Reservoir Rock

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Analysis of Vapor-Liquid Equilibrium Parameters of Multicomponent Hydrocarbon Mixtures Using Cubic Equations of State (Russian)

Cited by 4 publications

References 2 publications

Study of phase and physical property changes during gas lift injection of high CO2‐content associated gas in the offshore M oil field

Study of phase and physical property changes during gas lift injection of high CO2‐content associated gas in the offshore M oil field

Numerical investigation on acoustic cavitation characteristics of an air-vapor bubble: Effect of equation of state for interior gases

Numerical Simulation of Hydrocarbon Mixtures Mass Transfer Processes and Flow in a Reservoir Rock

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Study of phase and physical property changes during gas lift injection of high CO₂‐content associated gas in the offshore M oil field

Study of phase and physical property changes during gas lift injection of high CO₂‐content associated gas in the offshore M oil field