The precipitation and deposition of wax has remained a major challenge that the oil industries is faced with during the production of waxy crude. This problem is simply an issue from the wellbore to the surface facilities. As a result of this, millions of dollars has been invested in remedial operations. In this research, a predictive model that uses thermodynamic relationship in predicting precipitation of wax has been developed. K-values for the solid-liquid equilibrium is described using solubility parameter, melting point temperature, enthalpy of fusion, and the molar volume for the components. The weight fraction was used to describe the wax mixture. Experimental data from three oil mixtures were used in comparing the model predicted wax appearance temperature (WAT). For oil mixA, the experimental value is 294.15K; Pauly et al predicted 302.15K while this work predicted 301.21K. For oil mixB, the experimental value is 300.15K; Pauly et al predicted 310.15K while this work predicted 308.91K. For oil mixC, the experimental value is 298.15K; Pauly et al predicted 302.15K while this work predicted 300.38K. The obtained results from this research confirmed the capability of the model in predicting Wax Appearance Temperature. A more conservative value for the WAT was predicted which is an improvement.
| Published in | International Journal of Oil, Gas and Coal Engineering (Volume 9, Issue 1) |
| DOI | 10.11648/j.ogce.20210901.12 |
| Page(s) | 6-11 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2021. Published by Science Publishing Group |
Thermodynamic Model, Wax Appearance Temperature, Phase Equilibrium, Flash Calculation, Wax Deposition
| [1] | I. M. Onyejekwe. “Prediction of Wax Formation in Petroleum Fluid Using Thermodynamic Relations.” Ph. D. thesis, Federal University of Technology Owerri, Nigeria, 2018. |
| [2] | K. W. Won. “Continuous thermodynamics for solid-liquid equilibria: Wax formation from heavy hydrocarbon mixtures.” Fluid Phase Equilibria, vol. 33, pp. 265-279, 1986. |
| [3] | K. W. Won. “Thermodynamic calculation of cloud point temperatures and wax phase compositions of refined hydrocarbon mixtures.” Fluid Phase Equilibria, vol. 53, pp. 377-396, 1989. |
| [4] | J. H. Hansen., Aa. Fredenslud., K. S. Pedersen., & H. P. Ronningsen. “Thermodynamic model for predicting wax formation in crude oils.” Vol. 34 (12), pp. 1937-1942. 1988. |
| [5] | R. G. Snyder., M. C. Goh., V. J. Srivatsavaoy., H. L. Stauss., & D. L. Dorest. “Measurement of the growth kinetics ofmicrodomainsin binary n-alkane solid solutions by infrared spectroscopy”. J. phys. Chem, vol. 96 (24), pp. 10008-10019, 1992. |
| [6] | R. G. Snyder., G. Conti., H. L. Strauss & D. L. Dorest. “Thermally induced mixing in partially microphase segregated binary n-alkane crystals.” Journal of phys. chem., vol. 97 (28), pp. 7342-7350, 1993. |
| [7] | R. G. Snyder., V. J. Srivatsavoy., D. A. Cates., H. L. Strauss., J. W. White., & D. L. Dorest. “Hydrogen deuterium isotope effects on microphase separation in unstable crystalline mixtures of binary n-alkanes”. Journal of phys. chem., vol. 98 (2), pp. 674-684, 1994. |
| [8] | W. B. Pedersen., A. B. Hansen., E. Larsen., A. B. Nielsen., & H. P. Ronningsen. “Wax precipitation from North Sea crude oils. 2. Solid-phase content as function of temperature determined by pulsed NMR”. Energy & Fuels, vol. 5 (6), pp. 908-913, 1991. |
| [9] | R. M. Jorda. “Paraffin deposition and prevention in oil Wells.” Journal of petroleum technology, pp. 1605-1612, 1996. |
| [10] | O. Bello., S. Fasesan., C. Teodoriu., & K. Reinicke.” An evaluation of the performance of selected wax inhibitors on paraffin deposition of Nigeria crude oils.” Pet SciTechnol, vol. 24, pp. 195-206, 2006. |
| [11] | B. F. Towler., A. K. Chejara., & S. Mokhatab,” Experimental investigations of ultrasonic waves effects on wax deposition during crude oil production.” In: SPE-109505 presented at SPE Annual Technical Conference and Exhibition. Anaheim, California, 2007, pp. 11-14. |
| [12] | G. Anand., & S. Anirbid.“Need of flow assurance for crude oil pipelines: A review.” International Journal of Multidisplinary Sciences and Engineering, vol. 6 (2), Feb. 2015. |
| [13] | H. Ahmed., & M. A. Raines. “Paraffin Deposition from Crude Oils: Comparison of Laboratory Results to Field Data,” SPE 38776. Presented at SPE Annual Technical Conference and Exhibition held in San Antonio Texas, 1997, pp. 5-8. |
| [14] | P. A. Bern., V. R. Winthers., & J. R. Cairns. “Wax deposition in crude oil pipelines.” A paper presented at European offshore petroleum conference and exhibition, London, 1980, pp. 571-578. |
| [15] | R. M. Jorda. “Paraffin deposition and prevention in oil Wells.” JPT, pp. 1605-1619, 2009. |
| [16] | A. R. SolaimanyNazar., B. Dabir., & M. R. Islam.” A multi-solid phase thermodynamic model for predicting wax precipitation in petroleum mixtures.” Energy Sources, vol. 27, pp. 173-184, 2005. |
| [17] | C. Wuhua and Z. Zongchang. “Thermodynamic modeling of wax precipitation in crude oils.” Chin J ChemEng, vol. 14, pp. 685-689, 2006. |
| [18] | B. Edmonds., T. Moorwood., R. Szezepanski., X. Zhang. “Simulating wax deposition in pipelines for flow assurance.” Energy Fuels, vol. 22, 729-741, 2008. |
| [19] | E. Ramirez-Jaramillo., C. Lira-Galeana., & O. Manero. “Numerical simulation of wax deposition in oil pipeline systems.” Petrol SciTechnol, vol. 19, pp. 143-156, 2001. |
| [20] | E. Ramirez-Jaramillo., C. Lira-Galeana., & O. Manero. “Numerical simulation of wax deposition in oil pipeline systems.” Petrol SciTechnol, vol. 22, pp. 821-861, 2004. |
| [21] | J. M. Prausnitz., R. N. Lichtenthaler., & E. G. Azevedo. Molecular thermodynamic of fluid-phase equilibria. Prentice-Hall, Englewood Cliffs, NJ, 1999. |
| [22] | R. Banki and A. Firoozabadi. “Modeling of wax deposition in pipelines from irreversible thermodynamics,” A paper SPE 77571, Presented at Annual Technical Conference and Exhibition, San Antonia, 2002. |
| [23] | M. Halsten., B. K. Arvoh., L. Amundsen., & R. Hoffmann. “Online estimation of wax deposition thickness in single-phase sub-sea pipelines based on acoustic chemometrics: a feasibility study.” Fuel, vol. 105, pp. 718-727, 2013. |
| [24] | K. S. Pedersen. “Prediction of cloud point temperatures and amount of wax precipitation.”SPE production and facilities, vol. 10 (1), pp. 46-49, 1995. |
| [25] | X. Zhou and F. B. Thomas. “Modeling of solid precipitation from reservoir Fluid.” JCPT, vol. 35 (10), pp. 37-45, 1996. |
| [26] | A. A. Sulaimon., G. K. Falade., & W. DeLandro. “A proactive approach for predicting and preventing wax deposition in production tubing strings: A Niger Delta experience.”J. petroleum and gas engineering, vol. 1 (2), pp. 26-36, 2010. |
| [27] | J. Pauly., C. Dauphin., & J. L. Daridon. “Liquid-solid equilibria in a decane + multi-paraffins system.” Fluid Phase Equilibria, vol. 149, pp. 191-207, 1998. |
| [28] | J. A. P. Coutinho., B. Edmonds., T. Moorwood., R. Szezepanski& X. Zhang. “Reliable wax Prediction for Flow Assurance,” SPE 78324 Presented at Aberdeen Scotland, 2002, pp. 1-11. |
APA Style
Onyejekwe Ifeanyichukwu Michael, Duru Ugochukwu Ilozuruike, Obibuike Ubanozie Julian, Uwaezuoke Nnaemeka. (2021). Prediction of Wax Precipitation Temperature in Petroleum Fluids. International Journal of Oil, Gas and Coal Engineering, 9(1), 6-11. https://doi.org/10.11648/j.ogce.20210901.12
ACS Style
Onyejekwe Ifeanyichukwu Michael; Duru Ugochukwu Ilozuruike; Obibuike Ubanozie Julian; Uwaezuoke Nnaemeka. Prediction of Wax Precipitation Temperature in Petroleum Fluids. Int. J. Oil Gas Coal Eng. 2021, 9(1), 6-11. doi: 10.11648/j.ogce.20210901.12
AMA Style
Onyejekwe Ifeanyichukwu Michael, Duru Ugochukwu Ilozuruike, Obibuike Ubanozie Julian, Uwaezuoke Nnaemeka. Prediction of Wax Precipitation Temperature in Petroleum Fluids. Int J Oil Gas Coal Eng. 2021;9(1):6-11. doi: 10.11648/j.ogce.20210901.12
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Download@article{10.11648/j.ogce.20210901.12,
author = {Onyejekwe Ifeanyichukwu Michael and Duru Ugochukwu Ilozuruike and Obibuike Ubanozie Julian and Uwaezuoke Nnaemeka},
title = {Prediction of Wax Precipitation Temperature in Petroleum Fluids},
journal = {International Journal of Oil, Gas and Coal Engineering},
volume = {9},
number = {1},
pages = {6-11},
doi = {10.11648/j.ogce.20210901.12},
url = {https://doi.org/10.11648/j.ogce.20210901.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ogce.20210901.12},
abstract = {The precipitation and deposition of wax has remained a major challenge that the oil industries is faced with during the production of waxy crude. This problem is simply an issue from the wellbore to the surface facilities. As a result of this, millions of dollars has been invested in remedial operations. In this research, a predictive model that uses thermodynamic relationship in predicting precipitation of wax has been developed. K-values for the solid-liquid equilibrium is described using solubility parameter, melting point temperature, enthalpy of fusion, and the molar volume for the components. The weight fraction was used to describe the wax mixture. Experimental data from three oil mixtures were used in comparing the model predicted wax appearance temperature (WAT). For oil mixA, the experimental value is 294.15K; Pauly et al predicted 302.15K while this work predicted 301.21K. For oil mixB, the experimental value is 300.15K; Pauly et al predicted 310.15K while this work predicted 308.91K. For oil mixC, the experimental value is 298.15K; Pauly et al predicted 302.15K while this work predicted 300.38K. The obtained results from this research confirmed the capability of the model in predicting Wax Appearance Temperature. A more conservative value for the WAT was predicted which is an improvement.},
year = {2021}
}
TY - JOUR T1 - Prediction of Wax Precipitation Temperature in Petroleum Fluids AU - Onyejekwe Ifeanyichukwu Michael AU - Duru Ugochukwu Ilozuruike AU - Obibuike Ubanozie Julian AU - Uwaezuoke Nnaemeka Y1 - 2021/03/04 PY - 2021 N1 - https://doi.org/10.11648/j.ogce.20210901.12 DO - 10.11648/j.ogce.20210901.12 T2 - International Journal of Oil, Gas and Coal Engineering JF - International Journal of Oil, Gas and Coal Engineering JO - International Journal of Oil, Gas and Coal Engineering SP - 6 EP - 11 PB - Science Publishing Group SN - 2376-7677 UR - https://doi.org/10.11648/j.ogce.20210901.12 AB - The precipitation and deposition of wax has remained a major challenge that the oil industries is faced with during the production of waxy crude. This problem is simply an issue from the wellbore to the surface facilities. As a result of this, millions of dollars has been invested in remedial operations. In this research, a predictive model that uses thermodynamic relationship in predicting precipitation of wax has been developed. K-values for the solid-liquid equilibrium is described using solubility parameter, melting point temperature, enthalpy of fusion, and the molar volume for the components. The weight fraction was used to describe the wax mixture. Experimental data from three oil mixtures were used in comparing the model predicted wax appearance temperature (WAT). For oil mixA, the experimental value is 294.15K; Pauly et al predicted 302.15K while this work predicted 301.21K. For oil mixB, the experimental value is 300.15K; Pauly et al predicted 310.15K while this work predicted 308.91K. For oil mixC, the experimental value is 298.15K; Pauly et al predicted 302.15K while this work predicted 300.38K. The obtained results from this research confirmed the capability of the model in predicting Wax Appearance Temperature. A more conservative value for the WAT was predicted which is an improvement. VL - 9 IS - 1 ER -
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