A model for single-phase PVTx properties of CO2–CH4–C2H6–N2–H2O–NaCl fluid mixtures from 273 to 1273K and from 1 to 5000bar

Autor:	Zhenhao Duan, Dehui Zhang, Jiawen Hu, Shide Mao
Rok vydání:	2010
Předmět:	Thermodynamic model Equation of state symbols.namesake Volume (thermodynamics) Geochemistry and Petrology Chemistry Helmholtz free energy symbols Binary number Thermodynamics Geology Single phase Bar (unit)
Zdroj:	Chemical Geology. 275:148-160
ISSN:	0009-2541
DOI:	10.1016/j.chemgeo.2010.05.004
Popis:	article i nfo A thermodynamic model explicit in Helmholtz free energy is constructed to calculate the single-phase PVTx properties of the CO2-CH4-C2H6-N2-H2O fluid mixtures. Parameters of the binary CO2-H2O, CH4-H2O, C2H6- H2O and N2-H2O mixtures are regressed from assessed experimental data. On the basis of the binary mixture parameters, the model can be used to predict the single-phase volumes of the CO2-CH4-C2H6-N2-H2O-NaCl fluid mixtures with a simple approach. Comparison with a large number of experimental data shows that the model can reproduce the single-phase PVTx properties of the CO2-CH4-C2H6-N2-H2O-NaCl fluid mixtures from 273 to 1273 K and from 1 to 5000 bar, with or close to experimental accuracy. Online calculations can be made on the website: www.geochem-model.org/.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5ff7b0f8cd7815a7fc6520e5b07fbd5a https://doi.org/10.1016/j.chemgeo.2010.05.004 Zobrazit plný text záznamu Full Text from ScienceDirect