The physical and compositional properties of live crude oils strongly affect the strategy of transportation of oil and gas from reservoirs to the stock tank and their storage. The relevant PVT properties of live crude oils like solution gas-oil ratio and oil formation volume factor should be measured preferably in laboratory for different pressures at the process or reservoir temperature. The sampling and PVT analysis include time consuming or expensive procedures and the data obtained are correlated for interpolation or estimation of properties. These properties vary considerably for different classes of crude oils. We obtain experimental data of crude oils properties from the PVT analysis of primary high-pressure separator samples of 260 live paraffinic-naphthenic crude oils from forty-four Brazilian oil wells. The solution gas-oil ratio and oil formation volume factor were obtained within experimental uncertainties of 5.79% and 1.00%, respectively. We have compared the results with the estimates of several cubic equations of state as well as with widely used literature correlations. The best equation of state estimate solution gas-oil ratio with average absolute percent relative error (AARE) of 10.36%, better than the empirical correlations in the literature using measured temperature, pressure and composition, the empirical correlation for solution gas-oil ratio with parameters estimated from the experimental data shows an AARE of 10.77%. The equations of state and literature correlations estimate the oil formation volume factor with an AARE about 2%, which is lower than the needed accuracy. The measured oil formation volume factors are correlated with an average absolute percent relative error of 1.18%, with a proposed correlation using readily measured liquid densities and solution gas-oil ratio. We can estimate the solution gas-oil ratio by Peng-Robinson equation of state and oil formation volume factor by proposed correlation to the needed accuracy for live paraffinic-naphthenic crude oils under separator conditions from composition, temperature and densities of gas and oil.
Published in | International Journal of Oil, Gas and Coal Engineering (Volume 5, Issue 6) |
DOI | 10.11648/j.ogce.20170506.18 |
Page(s) | 175-183 |
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), 2017. Published by Science Publishing Group |
Live Crude Oils, Experimental PVT Properties, Solution Gas-Oil Ratio, Oil Formation Volume Factor, Paraffinic-Naphthenic Crudes
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APA Style
Luciana Loureiro de Pinho Rolemberg de Andrade, Krishnaswamy Rajagopal. (2017). PVT Properties of Live Crude Oils from Upstream Production Platforms. International Journal of Oil, Gas and Coal Engineering, 5(6), 175-183. https://doi.org/10.11648/j.ogce.20170506.18
ACS Style
Luciana Loureiro de Pinho Rolemberg de Andrade; Krishnaswamy Rajagopal. PVT Properties of Live Crude Oils from Upstream Production Platforms. Int. J. Oil Gas Coal Eng. 2017, 5(6), 175-183. doi: 10.11648/j.ogce.20170506.18
AMA Style
Luciana Loureiro de Pinho Rolemberg de Andrade, Krishnaswamy Rajagopal. PVT Properties of Live Crude Oils from Upstream Production Platforms. Int J Oil Gas Coal Eng. 2017;5(6):175-183. doi: 10.11648/j.ogce.20170506.18
@article{10.11648/j.ogce.20170506.18, author = {Luciana Loureiro de Pinho Rolemberg de Andrade and Krishnaswamy Rajagopal}, title = {PVT Properties of Live Crude Oils from Upstream Production Platforms}, journal = {International Journal of Oil, Gas and Coal Engineering}, volume = {5}, number = {6}, pages = {175-183}, doi = {10.11648/j.ogce.20170506.18}, url = {https://doi.org/10.11648/j.ogce.20170506.18}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ogce.20170506.18}, abstract = {The physical and compositional properties of live crude oils strongly affect the strategy of transportation of oil and gas from reservoirs to the stock tank and their storage. The relevant PVT properties of live crude oils like solution gas-oil ratio and oil formation volume factor should be measured preferably in laboratory for different pressures at the process or reservoir temperature. The sampling and PVT analysis include time consuming or expensive procedures and the data obtained are correlated for interpolation or estimation of properties. These properties vary considerably for different classes of crude oils. We obtain experimental data of crude oils properties from the PVT analysis of primary high-pressure separator samples of 260 live paraffinic-naphthenic crude oils from forty-four Brazilian oil wells. The solution gas-oil ratio and oil formation volume factor were obtained within experimental uncertainties of 5.79% and 1.00%, respectively. We have compared the results with the estimates of several cubic equations of state as well as with widely used literature correlations. The best equation of state estimate solution gas-oil ratio with average absolute percent relative error (AARE) of 10.36%, better than the empirical correlations in the literature using measured temperature, pressure and composition, the empirical correlation for solution gas-oil ratio with parameters estimated from the experimental data shows an AARE of 10.77%. The equations of state and literature correlations estimate the oil formation volume factor with an AARE about 2%, which is lower than the needed accuracy. The measured oil formation volume factors are correlated with an average absolute percent relative error of 1.18%, with a proposed correlation using readily measured liquid densities and solution gas-oil ratio. We can estimate the solution gas-oil ratio by Peng-Robinson equation of state and oil formation volume factor by proposed correlation to the needed accuracy for live paraffinic-naphthenic crude oils under separator conditions from composition, temperature and densities of gas and oil.}, year = {2017} }
TY - JOUR T1 - PVT Properties of Live Crude Oils from Upstream Production Platforms AU - Luciana Loureiro de Pinho Rolemberg de Andrade AU - Krishnaswamy Rajagopal Y1 - 2017/12/12 PY - 2017 N1 - https://doi.org/10.11648/j.ogce.20170506.18 DO - 10.11648/j.ogce.20170506.18 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 - 175 EP - 183 PB - Science Publishing Group SN - 2376-7677 UR - https://doi.org/10.11648/j.ogce.20170506.18 AB - The physical and compositional properties of live crude oils strongly affect the strategy of transportation of oil and gas from reservoirs to the stock tank and their storage. The relevant PVT properties of live crude oils like solution gas-oil ratio and oil formation volume factor should be measured preferably in laboratory for different pressures at the process or reservoir temperature. The sampling and PVT analysis include time consuming or expensive procedures and the data obtained are correlated for interpolation or estimation of properties. These properties vary considerably for different classes of crude oils. We obtain experimental data of crude oils properties from the PVT analysis of primary high-pressure separator samples of 260 live paraffinic-naphthenic crude oils from forty-four Brazilian oil wells. The solution gas-oil ratio and oil formation volume factor were obtained within experimental uncertainties of 5.79% and 1.00%, respectively. We have compared the results with the estimates of several cubic equations of state as well as with widely used literature correlations. The best equation of state estimate solution gas-oil ratio with average absolute percent relative error (AARE) of 10.36%, better than the empirical correlations in the literature using measured temperature, pressure and composition, the empirical correlation for solution gas-oil ratio with parameters estimated from the experimental data shows an AARE of 10.77%. The equations of state and literature correlations estimate the oil formation volume factor with an AARE about 2%, which is lower than the needed accuracy. The measured oil formation volume factors are correlated with an average absolute percent relative error of 1.18%, with a proposed correlation using readily measured liquid densities and solution gas-oil ratio. We can estimate the solution gas-oil ratio by Peng-Robinson equation of state and oil formation volume factor by proposed correlation to the needed accuracy for live paraffinic-naphthenic crude oils under separator conditions from composition, temperature and densities of gas and oil. VL - 5 IS - 6 ER -