Prediction of thermodynamic properties of natural gas mixtures using 10 equations of state including a new cubic two-constant equation of state

Nasrifar, Khashayar; Bolland, Olav

doi:10.1016/j.petrol.2006.01.004

Cited by 90 publications

(35 citation statements)

References 36 publications

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“…For Joule-Thomson coefficient of the corresponding range on average deviation obtained by Nasrifar and Bolland (2006) was from 5.03 to 13.1%. (1) From Ernst et al (2001).…”

Section: Model Performancementioning

confidence: 87%

A Model To Calculate the Theoretical Critical Flow Rate Through Venturi Gas Lift Valves

Almeida

2010

SPE Journal

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A model to calculate the theoretical critical flow rate of nitrogen (N 2 ) or natural gas through a Venturi gas lift valve is described herein. This new model considers real-gas effects not only in density calculations but also in other thermodynamic properties that are relevant during gas isentropic evolution.For the properties of N 2 , the Bennedict, Webb, and Rubin (BWR) equation of state and an accurate correlation for the idealgas isobaric heat capacity were used. For natural gas, the Dranchuk and Abou-Kassem equation, which reproduces the well-known Standing and Katz chart, was used, and, for the ideal-gas isobaric heat capacity, it was assumed that the natural gas was a mixture of methane and ethane only, their individual ideal-gas heat capacity being calculated by updated correlations.To validate the use of the proposed equations of state, a comparison of calculated with experimental or reference data on properties of N 2 and natural gas (including pure methane and some relevant mixtures) was performed with very good results for N 2 and for natural-gas compositions usual in gas lift operations (dry gas with very small amounts of contaminants). For natural gas with moderate amounts of N 2 and carbon dioxide (CO 2 ), accurate results were obtained after correction of critical conditions and of ideal heat capacity. The model was also compared with other theoretical models found in the literature, which use compositional approaches for natural gas, with excellent results. Some experimental results obtained with commercial Venturi valves manufactured in Brazil are also presented.

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“…For Joule-Thomson coefficient of the corresponding range on average deviation obtained by Nasrifar and Bolland (2006) was from 5.03 to 13.1%. (1) From Ernst et al (2001).…”

Section: Model Performancementioning

confidence: 87%

A Model To Calculate the Theoretical Critical Flow Rate Through Venturi Gas Lift Valves

Almeida

2010

SPE Journal

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“…Hossein Eslami [6] performed an analysis based on liquid density of halogenated hydrocarbons is calculating an analytical EOS, the EOS used with much less input information than the full potential, because the temperature-dependent parameters of the equation of state that depend only on the repulsion (a and b); are insensitive to the detailed shape of the potential and can be scaled with two fixed constants. Nasri far and Bolland [7] predictive accuracy of the EOS is comparable to the predictive accuracy of the RKS of EOS. The supercritical behavior of methane by using the VDW mixing rules with zero binary interaction parameters, the proposed EOS predicts the compressibility factors and speeds of sound data of natural gas mixtures with best accuracy among the other EOS.…”

Section: Introductionmentioning

confidence: 83%

Examined the Ability of Some Different Equations of State in Predicting Thermodynamic Properties of Nitrogen Gas at Different Conditions Rang of Pressure and Temperature

2017

International Journal of Advanced Research in Chemical Science

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“…Further, the NB EOS is markedly accurate in predicting gas density and speeds of sound data for synthetic natural gas mixtures, which is the subject of this work. In predicting other natural gas properties such as Joule-Thomson coefficient and constant pressure heat capacity of natural gas mixtures, the NB EOS is comparable to the SRK EOS, and in predicting the VLE of binary and multicomponent natural gas mixtures, the NB EOS behaves similarly (Nasrifar and Bolland, 2006) to the PR or SRK EOS.…”

Section: Introductionmentioning

confidence: 88%

“…(1) as the equation for binary interaction parameters. The NB EOS (Nasrifar and Bolland, 2006) is expressed by:…”

Section: The Proposed Predictive Modelmentioning

confidence: 99%

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Application of predictive equations of state in calculating natural gas phase envelopes and critical points

Tabrizi

Nasrifar

2010

Journal of Natural Gas Science and Engineering

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Prediction of thermodynamic properties of natural gas mixtures using 10 equations of state including a new cubic two-constant equation of state

Cited by 90 publications

References 36 publications

A Model To Calculate the Theoretical Critical Flow Rate Through Venturi Gas Lift Valves

A Model To Calculate the Theoretical Critical Flow Rate Through Venturi Gas Lift Valves

Examined the Ability of Some Different Equations of State in Predicting Thermodynamic Properties of Nitrogen Gas at Different Conditions Rang of Pressure and Temperature

Application of predictive equations of state in calculating natural gas phase envelopes and critical points

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