Quantitative assessment of a novel method for fluid thermodynamic test simulation in multicomponent systems
Abstract
This paper presents a quantitative methodology for simulating fluid thermodynamic tests, including constant composition expansion (CCE), differential liberation (DL), and separator tests, within multicomponent systems. The approach combines equilibrium ratios, flash calculations, and the Peng-Robinson equation of state. Utilizing the PVTp (Pressure - Volume - Temperature) package regression procedure enables the calibration of OmegaA and OmegaB values, enhancing accuracy and minimizing error margins in fluid thermodynamic calculations compared to empirical data. Numerical results demonstrate the effectiveness of this method. Bubble point pressure values from observed, software-generated, and calculated data are 2344, 2339, and 2350.42 psia, respectively. Calculated fluid thermodynamic test results closely align with software predictions and exhibit acceptable error levels compared to the measured data. However, discrepancies in the solution gas - oil ratio during the DL test highlight the need for more comprehensive measured data to improve simulation accuracy and reduce error margins. The comparison between the proposed methodology and collected data confirms the effectiveness of integrating equilibrium ratios, flash calculations, and the Peng-Robinson equation of state for precise fluid thermodynamic calculations. This approach offers a quantitative framework for simulating fluid thermodynamic tests, providing insights while reducing reliance on costly laboratory experiments.
References
arek Ahmed, Reservoir engineering handbook, 4th edition. Gulf Professional Publishing, 2010.
Tarek Ahmed, "Working guide to Vapor - Liquid phase equilibria calculations", Reservoir Engineering Handbook, 3rd edition. Gulf Professional Publishing, 2006, pp. 1096 - 1234.
Tarek Ahmed, Equation of state and PVT analysis. Gulf Publishing Company, 2007.
F. Esmaeilzadeh and F. Samadi, "Modification of Esmaeilzadeh - Roshanfekr equation of state to improve volumetric predictions of gas condensate reservoir", Elsevier, Volume 267, Issue 2, pp. 113 - 118, 2008. DOI: 10.1016/j.fluid.2008.02.017.
R. Wu and L. Rosenegger, "Comparison of PVT properties from equation of state analysis and PVT correlations for reservoir studies", Journal of Canadian Petroleum Technology, Volume 39, Issue 7, pp. 44 - 51, 2000.
Bharat S. Jhaveri and Gary K. Youngren, "Three-Parameter modification of the Peng-Robinson equation of state to improve volumetric predictions", SPE Reservoir Engineers, Volume 3, Issue 3, pp. 1033 - 1040, 1988. DOI: 10.2118/13118-PA.
Mourad Bengherbia and Djebbar Tiab, "Gas-Condensate well performance using compositional simulator: A case study", SPE Gas Technology Symposium, Calgary, Alberta, Canada, 30 April - 2 May 2002. DOI: 10.2118/75531-MS
D. Ghorbani and R. Kharrat, "Fluid characterization of an iranian carbonate oil reservoir using different PVT packages", SPE Asia Pacific Oil and Gas Conference and Exhibition, Jakarta, Indonesia, 17 - 19 April 2001.
Tarek Ahmed, "On equation of state", Latin American & Caribbean Petroleum Engineering Conference, Buenos Aires, Argentina, 15 - 18 April 2007. DOI: 10.2118/107331-MS.
Shu Pan, Asok Kumar Tharanivasan, Jiabao Jack Zhu, Kurt Schmidt, John Ratulowski, and Robert Fisher, "A robust workflow for reliably describing reservoir fluid PVT properties using equation of state models", International Petroleum Technology Conference, Doha, Qatar, 6 - 9 December 2015. DOI: 10.2523/IPTC-18334-MS.
Yau-Kun Li and Long X. Nghiem, "The development of a general phase envelope construction algorithm for reservoir fluid studies", SPE Annual Technical Conference and Exhibition, New Orleans, LA, 26 - 29, September, 1982. DOI: 10.2118/11198-MS.
T.D.N. Giao, “Study on equation of state to build phase diagram”, Bachelor thesis in Petroleum Engineering. The Faculty of Geology and Petroleum Engineering, Hochiminh city University of Technology, Vietnam National University, August 2021.
1. The Author assigns all copyright in and to the article (the Work) to the Petrovietnam Journal, including the right to publish, republish, transmit, sell and distribute the Work in whole or in part in electronic and print editions of the Journal, in all media of expression now known or later developed.
2. By this assignment of copyright to the Petrovietnam Journal, reproduction, posting, transmission, distribution or other use of the Work in whole or in part in any medium by the Author requires a full citation to the Journal, suitable in form and content as follows: title of article, authors’ names, journal title, volume, issue, year, copyright owner as specified in the Journal, DOI number. Links to the final article published on the website of the Journal are encouraged.
