Novel mathematical correlation for accurate prediction of gas compressibility factor
Gas compressibility factor is a critical thermodynamic property that is a required input in the estimation of many reservoir fluid properties and reservoir engineering calculations. Experimentally derived values are considered the best, but these are very expensive and time-consuming. In this work,...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2019-12-01
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| Series: | Natural Gas Industry B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352854019301172 |
| _version_ | 1797283629242515456 |
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| author | Gerald Kelechi Ekechukwu Oyinkepreye David Orodu |
| author_facet | Gerald Kelechi Ekechukwu Oyinkepreye David Orodu |
| author_sort | Gerald Kelechi Ekechukwu |
| collection | DOAJ |
| description | Gas compressibility factor is a critical thermodynamic property that is a required input in the estimation of many reservoir fluid properties and reservoir engineering calculations. Experimentally derived values are considered the best, but these are very expensive and time-consuming. In this work, we have developed a new simplified explicit compressibility factor correlation based on a large dataset using a hybrid nonlinear optimization technique. The new model has a correlation coefficient of 0.9997 and very low average relative error and root-mean-square errors. Statistical analysis shows that this new correlation outperforms all of the existing correlations within the range of 0.2 < Ppr <15 and 1.05 < Tpr < 2). Keywords: Compressibility factor, Empirical model, Explicit correlation, Pseudo-critical properties |
| first_indexed | 2024-03-07T17:34:34Z |
| format | Article |
| id | doaj.art-ef02806bdfe746ba9f3c88a70c2956b7 |
| institution | Directory Open Access Journal |
| issn | 2352-8540 |
| language | English |
| last_indexed | 2024-03-07T17:34:34Z |
| publishDate | 2019-12-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Natural Gas Industry B |
| spelling | doaj.art-ef02806bdfe746ba9f3c88a70c2956b72024-03-02T17:13:58ZengKeAi Communications Co., Ltd.Natural Gas Industry B2352-85402019-12-0166629638Novel mathematical correlation for accurate prediction of gas compressibility factorGerald Kelechi Ekechukwu0Oyinkepreye David Orodu1Department of Petroleum Engineering, University of Wyoming, 82072, United States; Corresponding author.Department of Petroleum Engineering, Covenant University, Ota, Ogun State, NigeriaGas compressibility factor is a critical thermodynamic property that is a required input in the estimation of many reservoir fluid properties and reservoir engineering calculations. Experimentally derived values are considered the best, but these are very expensive and time-consuming. In this work, we have developed a new simplified explicit compressibility factor correlation based on a large dataset using a hybrid nonlinear optimization technique. The new model has a correlation coefficient of 0.9997 and very low average relative error and root-mean-square errors. Statistical analysis shows that this new correlation outperforms all of the existing correlations within the range of 0.2 < Ppr <15 and 1.05 < Tpr < 2). Keywords: Compressibility factor, Empirical model, Explicit correlation, Pseudo-critical propertieshttp://www.sciencedirect.com/science/article/pii/S2352854019301172 |
| spellingShingle | Gerald Kelechi Ekechukwu Oyinkepreye David Orodu Novel mathematical correlation for accurate prediction of gas compressibility factor Natural Gas Industry B |
| title | Novel mathematical correlation for accurate prediction of gas compressibility factor |
| title_full | Novel mathematical correlation for accurate prediction of gas compressibility factor |
| title_fullStr | Novel mathematical correlation for accurate prediction of gas compressibility factor |
| title_full_unstemmed | Novel mathematical correlation for accurate prediction of gas compressibility factor |
| title_short | Novel mathematical correlation for accurate prediction of gas compressibility factor |
| title_sort | novel mathematical correlation for accurate prediction of gas compressibility factor |
| url | http://www.sciencedirect.com/science/article/pii/S2352854019301172 |
| work_keys_str_mv | AT geraldkelechiekechukwu novelmathematicalcorrelationforaccuratepredictionofgascompressibilityfactor AT oyinkepreyedavidorodu novelmathematicalcorrelationforaccuratepredictionofgascompressibilityfactor |