Solubility of light reservoir gasses in water by the modified Peng-Robinson plus association equation of state using experimental critical properties for pure water

Zoghi, Ali T.; Feyzi, Farzaneh; Zarrinpashneh, Saeed; Alavi, Farzad

doi:10.1016/j.petrol.2011.05.001

Cited by 13 publications

(13 citation statements)

References 54 publications

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“…the mutual solubilities of hydrocarbons and water) for the exploration of petroleum, natural gas and so-called nonconventional sources (such as gas hydrates, shale gas, and the tight gas reservoirs), for enhanced oil recovery, and for the design and operation of natural gas facilities, crude oil refineries, and petrochemical plants (Guillaume et al, 2001;Lin et al, 2007;Oliveira et al, 2007;Miguez et al, 2011). Understanding of the phase behavior of the water-hydrocarbon systems is also important for environmental purpose (Oliveira et al, 2007;Zoghi et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…By modifying the method to calculate the parameters of the CPA EOS for pure hydrocarbons, Yan et al (2009) were successful in the representation of the mutual solubilities of water and light hydrocarbons (including CH 4 , C 2 H 6 , C 3 H 8 and n-C 4 H 10 ). Combining CPA EOS with a composition-dependent mixing rule, Zoghi et al (2011) represented the solubilities of light hydrocarbons in water. Li and Firoozabadi (2009) pointed out that the mutual solubilities of water and light alkanes (as well as CO 2 , H 2 S, some liquid alkenes and aromatic hydrocarbons such as 1-hexene, 1-octene, benzene, ethylbenzene) can be represented quantitatively by considering the cross association between hydrocarbon and water.…”

Section: Introductionmentioning

confidence: 99%

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Calculation of vapor–liquid equilibrium and PVTx properties of geological fluid system with SAFT-LJ EOS including multi-polar contribution. Part III. Extension to water–light hydrocarbons systems

Sun

Lai

Dubessy

2014

Geochimica et Cosmochimica Acta

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Calculation of vapor–liquid equilibrium and PVTx properties of geological fluid system with SAFT-LJ EOS including multi-polar contribution. Part III. Extension to water–light hydrocarbons systems

Sun

Lai

Dubessy

2014

Geochimica et Cosmochimica Acta

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“…12,[27][28][29] Recently, CPA has been combined with composition dependent mixing rules and applied to similar mixtures with success. 30 Another type of EoS, of molecular nature, that has been widely used for waterhydrocarbon mixtures is SAFT. SAFT models not only have a suitable term to account for association and dispersion interactions, but also account for the shape of the molecules via a chain term.…”

Section: Introductionmentioning

confidence: 99%

Water–Hydrocarbon Phase Equilibria with SAFT-VR Mie Equation of State

Novak

Kontogeorgis

Castier

et al. 2021

Ind. Eng. Chem. Res.

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The study of water -hydrocarbon phase equilibria is very important both for scientific as well as industrial purposes. This work is a thorough investigation of the predictive capability of SAFT-VR Mie equation of state (EoS) for aqueous hydrocarbon phase equilibria, including n-alkanes, alkenes, cycloalkanes, branched alkanes and aromatic hydrocarbons. For alkenes and alkyl benzenes, induced association (solvation) with water is considered. The model is able to capture the correct phase equilibrium topology for mixtures of n-alkanes and alkyl-benzenes with water as Type III according to Van Konynenburg and Scott, but is not able to predict the barometric shift for alkanes longer than n-hexacosane, due to the overshoot of the critical temperature of water.Quantitative results for the solubility of water in light hydrocarbons such as methane, ethane and ethylene, as well as the mutual solubility of hydrocarbons and water above the solubility minimum are possible. The latter is not predicted with SAFT-VR Mie EoS, similar to other EoS in the literature. Accurate predictions are also reported for the pressure of the three-phase equilibrium and the critical lines for the binary mixtures. The Henry's law constant is often used for the prediction of low-pressure vapor-liquid equilibrium, due to the low mutual solubility of hydrocarbons and water. EoS calculations are in reasonable agreement with experimental data for the Henry's constant, especially at higher temperatures. Qualitatively, SAFT-VR Mie captures the maximum of the Henry's constant with temperature, as well as the shift with carbon number at temperatures near critical to water. SAFT-VR Mie is shown to be overall capable for straightforward prediction of phase equilibria of aqueous hydrocarbon mixtures.

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“…Understanding water solubility in a hydrocarbon mixture is important to prevent aqueous phase formation and the corrosion of operation equipment (Oliveira et al, 2007). Hydrocarbon solubility in water is an important environmental issue for water disposal due to the hydrocarbon concentration limitations (Zoghi et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Another class of EOS that considers the association compressibility factor based on cubic models was proposed by Kontogeorgis et al (1996;1999). These types of models are called CPA (cubic plus association) and exhibit excellent accuracy when dealing with strong polar components such H 2 O, H 2 S, CO 2 and so on (Perfetti et al, 2008;Zoghi et al, 2011). The SAFT or CPA models usually exhibit good performance for standalone calculations, but they are not time efficient when used for numerical simulations.…”

Section: Introductionmentioning

confidence: 99%