Produção Nacional
Phase behavior of Brazilian stock tank oil and carbon dioxide at reservoir conditions: experiments and thermodynamic modeling
2015; Springer Nature; Volume: 6; Issue: 1 Linguagem: Inglês
10.1007/s13202-015-0165-y
ISSN2190-0558
AutoresCamila Barreto Araujo, F. O. Capitelli, Krishnaswamy Rajagopal, Marcos L. Corazza, Papa M. Ndiaye,
Tópico(s)Process Optimization and Integration
ResumoIn the first part of this work, phase behavior data of Brazilian stock tank oil and carbon dioxide are reported. The statical synthetical method was used. This technique consists of injecting known amounts of stock tank oil and carbon dioxide in an equilibrium cell, from which the bubble point is detected by an infrared device for a given temperature and then the corresponding pressure is recorded. In the second part of this work, thermodynamics modeling of experimental data was performed. The modified Peng–Robinson equation of state was used for predicting saturation pressure. A strategy for the estimation of the C20+ fraction is discussed by considering the critical pressure along with the Chueh Prausnitz binary interaction parameters. Results show that the saturation pressure of the system Marlim/CO2 is strongly affected by the concentration of carbon dioxide, while temperature exhibits unexpected effects on the phase transition pressure.
Referência(s)