Modifying the Peng Robinson equation for a homogeneous representation of pure fluid PVT properties

CO2 Gas is considered one of the unfavorable gases and it causes great air pollution. It’s possible to decrease this pollution by injecting gas in the oil reservoirs to provide a good miscibility and to increase the oil recovery factor. MMP was estimated by Peng Robinson equation of state (PR-EOS). South Rumila-63 (SULIAY) is involved for which the miscible displacement by is achievable based on the standard criteria for success EOR processes. A PVT report was available for the reservoir under study. It contains deferential liberation (DL) and constant composition expansion (CCE) tests. PVTi software is one of the (Eclipse V.2010) software’s packages, it has been used to achieve the goal. Many trials have been done to match the data of DL test by tuning some of the PR-EOS parameters through the regression analysis process, but no acceptable match was obtained especially for saturation pressure. However; splitting the mole fraction of (C6+) to many pseudo components was carried out, and then a regression analysis process was made again to improve the matching by tuning some of the PR-EOS parameters. A good estimate of saturation pressure and a good match of PVT properties was noted. Ternary diagram has been constructed to represent the phase behavior of -Oil and to calculate MMP for the South Rumila-63 (SULIAY) oil well.

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Evaluation of Mathematical Models of PVT Properties for Nigerian Crude Oils

10.2118/167513-ms ◽

2013 ◽

Cited By ~ 5

Author(s):

Yisa A. Adeeyo ◽

Muhammad A. Marhoun

Keyword(s):

Mathematical Models ◽

Crude Oils ◽

Pvt Properties

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Measurements of PvT Properties, Vapor Pressures, Saturated Densities, and Critical Parameters for trans-1,1,1,4,4,4-Hexafluoro-2-butene (R1336mzz(E))

Journal of Chemical & Engineering Data ◽

10.1021/acs.jced.0c00848 ◽

2020 ◽

Author(s):

Naoya Sakoda ◽

Yukihiro Higashi ◽

Ryo Akasaka

Keyword(s):

Critical Parameters ◽

Vapor Pressures ◽

Pvt Properties

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New volume translation functions for biodiesel density prediction with the Peng-Robinson Equation of state in terms of its raw materials

Fuel ◽

10.1016/j.fuel.2021.120254 ◽

2021 ◽

Vol 293 ◽

pp. 120254

Author(s):

Gutierri Salgueiro ◽

Marcellus de Moraes ◽

Fernando Pessoa ◽

Raquel Cavalcante ◽

André Young

Keyword(s):

Equation Of State ◽

Raw Materials ◽

Density Prediction ◽

Volume Translation ◽

Robinson Equation

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Revisiting Kelvin equation and Peng–Robinson equation of state for accurate modeling of hydrocarbon phase behavior in nano capillaries

Scientific Reports ◽

10.1038/s41598-021-86075-8 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Ilyas Al-Kindi ◽

Tayfun Babadagli

Keyword(s):

Experimental Data ◽

Surface Tension ◽

Equation Of State ◽

Phase Behavior ◽

Pore Radius ◽

Microfluidic Chips ◽

Tight Sandstone ◽

Kelvin Equation ◽

Rock Samples ◽

Robinson Equation

AbstractThe thermodynamics of fluids in confined (capillary) media is different from the bulk conditions due to the effects of the surface tension, wettability, and pore radius as described by the classical Kelvin equation. This study provides experimental data showing the deviation of propane vapour pressures in capillary media from the bulk conditions. Comparisons were also made with the vapour pressures calculated by the Peng–Robinson equation-of-state (PR-EOS). While the propane vapour pressures measured using synthetic capillary medium models (Hele–Shaw cells and microfluidic chips) were comparable with those measured at bulk conditions, the measured vapour pressures in the rock samples (sandstone, limestone, tight sandstone, and shale) were 15% (on average) less than those modelled by PR-EOS.

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