Experimental and modeling studies of density and viscosity behavior of a live fluid due to CO2 injection at reservoir condition
In this study, highly accurate measurements of density and dynamic viscosities of a recombined live oil and its mixture with additional CO2 were performed. The experiments were carried out under pressure and temperature gradients found in Brazilian Pre-salt reservoirs, that is, in the pressure range...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2021-01-01
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| Series: | Oil & Gas Science and Technology |
| Online Access: | https://ogst.ifpenergiesnouvelles.fr/articles/ogst/full_html/2021/01/ogst210047/ogst210047.html |
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| author | Santos David C. Lamim Marina N. Costa Daniela S. Mehl Ana Couto Paulo Paredes Márcio L. L. |
| author_facet | Santos David C. Lamim Marina N. Costa Daniela S. Mehl Ana Couto Paulo Paredes Márcio L. L. |
| author_sort | Santos David C. |
| collection | DOAJ |
| description | In this study, highly accurate measurements of density and dynamic viscosities of a recombined live oil and its mixture with additional CO2 were performed. The experiments were carried out under pressure and temperature gradients found in Brazilian Pre-salt reservoirs, that is, in the pressure range from (27.6 to 68.9) MPa and at (333.15 and 353.15) K. The assumption of volume change on mixing is evaluated from the experimental results, and the influence of pressure and temperature on the volume change upon mixing is assessed. The densities of mixtures are calculated considering (i) the excess volume approach, and (ii) no volume change. The densities are better correlated using the excess volume approach with Average Absolute Deviations (AAD) of 0.03%. Thirteen mixing rules of viscosity are examined by comparing the predicted values with the experimental viscosity of the recombined live oil + CO2 mixture. The performance of some rules using compositional fractions (molar, volume and weight) is also evaluated. Thus, a total of 28 different ways to calculate the mixture viscosities were tested in this study. The worst result was obtained with Bingham’s method, leading to 148.6% AAD. The best result was obtained from Lederer’s method with 2% AAD and a maximum deviation of 5.8% using volume fractions and the fitting parameter α. In addition, deviations presented by the predictive methods of Chevron, Double log, and Kendall did not exceed 9% AAD, using weight fractions (Chevron and Double log) and molar fractions (Kendall and Monroe). |
| first_indexed | 2024-12-19T10:44:10Z |
| format | Article |
| id | doaj.art-b7d1a6537a87428491c599140d362f7c |
| institution | Directory Open Access Journal |
| issn | 1294-4475 1953-8189 |
| language | English |
| last_indexed | 2024-12-19T10:44:10Z |
| publishDate | 2021-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Oil & Gas Science and Technology |
| spelling | doaj.art-b7d1a6537a87428491c599140d362f7c2022-12-21T20:25:20ZengEDP SciencesOil & Gas Science and Technology1294-44751953-81892021-01-01764510.2516/ogst/2021026ogst210047Experimental and modeling studies of density and viscosity behavior of a live fluid due to CO2 injection at reservoir conditionSantos David C.https://orcid.org/0000-0002-7628-704XLamim Marina N.0https://orcid.org/0000-0002-4629-5671Costa Daniela S.1https://orcid.org/0000-0003-2059-083XMehl Ana2https://orcid.org/0000-0001-7468-0756Couto Paulohttps://orcid.org/0000-0002-3847-8638Paredes Márcio L. L.3https://orcid.org/0000-0002-4623-1897School of Chemistry, Federal University of Rio de JaneiroLaboratory of Enhanced Oil Recovery, Federal University of Rio de JaneiroSchool of Chemistry, Federal University of Rio de JaneiroInstitute of Chemistry, Rio de Janeiro State UniversityIn this study, highly accurate measurements of density and dynamic viscosities of a recombined live oil and its mixture with additional CO2 were performed. The experiments were carried out under pressure and temperature gradients found in Brazilian Pre-salt reservoirs, that is, in the pressure range from (27.6 to 68.9) MPa and at (333.15 and 353.15) K. The assumption of volume change on mixing is evaluated from the experimental results, and the influence of pressure and temperature on the volume change upon mixing is assessed. The densities of mixtures are calculated considering (i) the excess volume approach, and (ii) no volume change. The densities are better correlated using the excess volume approach with Average Absolute Deviations (AAD) of 0.03%. Thirteen mixing rules of viscosity are examined by comparing the predicted values with the experimental viscosity of the recombined live oil + CO2 mixture. The performance of some rules using compositional fractions (molar, volume and weight) is also evaluated. Thus, a total of 28 different ways to calculate the mixture viscosities were tested in this study. The worst result was obtained with Bingham’s method, leading to 148.6% AAD. The best result was obtained from Lederer’s method with 2% AAD and a maximum deviation of 5.8% using volume fractions and the fitting parameter α. In addition, deviations presented by the predictive methods of Chevron, Double log, and Kendall did not exceed 9% AAD, using weight fractions (Chevron and Double log) and molar fractions (Kendall and Monroe).https://ogst.ifpenergiesnouvelles.fr/articles/ogst/full_html/2021/01/ogst210047/ogst210047.html |
| spellingShingle | Santos David C. Lamim Marina N. Costa Daniela S. Mehl Ana Couto Paulo Paredes Márcio L. L. Experimental and modeling studies of density and viscosity behavior of a live fluid due to CO2 injection at reservoir condition Oil & Gas Science and Technology |
| title | Experimental and modeling studies of density and viscosity behavior of a live fluid due to CO2 injection at reservoir condition |
| title_full | Experimental and modeling studies of density and viscosity behavior of a live fluid due to CO2 injection at reservoir condition |
| title_fullStr | Experimental and modeling studies of density and viscosity behavior of a live fluid due to CO2 injection at reservoir condition |
| title_full_unstemmed | Experimental and modeling studies of density and viscosity behavior of a live fluid due to CO2 injection at reservoir condition |
| title_short | Experimental and modeling studies of density and viscosity behavior of a live fluid due to CO2 injection at reservoir condition |
| title_sort | experimental and modeling studies of density and viscosity behavior of a live fluid due to co2 injection at reservoir condition |
| url | https://ogst.ifpenergiesnouvelles.fr/articles/ogst/full_html/2021/01/ogst210047/ogst210047.html |
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