SENSITIVITY STUDY OF THE RESERVOIR FLUIDS PVT PROPERTIES CALIBRATION ON SUPERFICIAL VELOCITIES AND LIQUID HOLDUP

The upward two-phase flow is encountered in many applications in petroleum industry as it is in nuclear and chemical industries. This kind of flow depends on several factors as flowing pressure and temperature, PVT properties of reservoir fluids, trajectory of well, well completion etc. The PVT pr...

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Main Author: Mariea Marcu
Format: Article
Language:English
Published: Petroleum-Gas University of Ploiesti 2020-12-01
Series:Romanian Journal of Petroleum & Gas Technology
Subjects:
Online Access:http://jpgt.upg-ploiesti.ro/wp-content/uploads/2020/12/2_2020_nr-2_Marcu-M.pdf
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author Mariea Marcu
author_facet Mariea Marcu
author_sort Mariea Marcu
collection DOAJ
description The upward two-phase flow is encountered in many applications in petroleum industry as it is in nuclear and chemical industries. This kind of flow depends on several factors as flowing pressure and temperature, PVT properties of reservoir fluids, trajectory of well, well completion etc. The PVT properties of fluids can be determined in laboratory based on oil and gas samples or can be estimated with different correlations. However, these correlations often lead to different results that are far from the measured data. The good practice is to calibrate a PVT correlation based on measured data in order to obtain a model which matches these data. In our paper, we investigate how the calibrated and non calibrated PVT properties of reservoir fluids influence the superficial velocities of fluids and holdup fraction in the case of the upward two-phase flow through the tubing string. In the first stage, we study the differences between calibrated and non calibrated values of oil PVT properties which influence the superficial velocities and liquid holdup. Then, we determine the superficial velocity of the fluids and the liquid holdup based on of the calibrated and non calibrated PVT properties of fluids. The general conclusion in our studied case is that the differences between the values of the superficial velocities and the liquid holdup calculated with the calibrated, respectively non calibrated PVT properties of fluids are not very large. However, it is better to calibrate the PVT properties of the fluids in order to minimize the errors that will propagate in the calculation of the pressure gradient.
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spelling doaj.art-fedae23e5eda4f93ba00242773fc3f002023-09-03T08:42:43ZengPetroleum-Gas University of PloiestiRomanian Journal of Petroleum & Gas Technology2734-53192020-12-01121022SENSITIVITY STUDY OF THE RESERVOIR FLUIDS PVT PROPERTIES CALIBRATION ON SUPERFICIAL VELOCITIES AND LIQUID HOLDUPMariea Marcu0Petroleum-Gas University of Ploiesti, RomaniaThe upward two-phase flow is encountered in many applications in petroleum industry as it is in nuclear and chemical industries. This kind of flow depends on several factors as flowing pressure and temperature, PVT properties of reservoir fluids, trajectory of well, well completion etc. The PVT properties of fluids can be determined in laboratory based on oil and gas samples or can be estimated with different correlations. However, these correlations often lead to different results that are far from the measured data. The good practice is to calibrate a PVT correlation based on measured data in order to obtain a model which matches these data. In our paper, we investigate how the calibrated and non calibrated PVT properties of reservoir fluids influence the superficial velocities of fluids and holdup fraction in the case of the upward two-phase flow through the tubing string. In the first stage, we study the differences between calibrated and non calibrated values of oil PVT properties which influence the superficial velocities and liquid holdup. Then, we determine the superficial velocity of the fluids and the liquid holdup based on of the calibrated and non calibrated PVT properties of fluids. The general conclusion in our studied case is that the differences between the values of the superficial velocities and the liquid holdup calculated with the calibrated, respectively non calibrated PVT properties of fluids are not very large. However, it is better to calibrate the PVT properties of the fluids in order to minimize the errors that will propagate in the calculation of the pressure gradient.http://jpgt.upg-ploiesti.ro/wp-content/uploads/2020/12/2_2020_nr-2_Marcu-M.pdfholdup fractionupward two-phase flowsuperficial velocitypvt properties
spellingShingle Mariea Marcu
SENSITIVITY STUDY OF THE RESERVOIR FLUIDS PVT PROPERTIES CALIBRATION ON SUPERFICIAL VELOCITIES AND LIQUID HOLDUP
Romanian Journal of Petroleum & Gas Technology
holdup fraction
upward two-phase flow
superficial velocity
pvt properties
title SENSITIVITY STUDY OF THE RESERVOIR FLUIDS PVT PROPERTIES CALIBRATION ON SUPERFICIAL VELOCITIES AND LIQUID HOLDUP
title_full SENSITIVITY STUDY OF THE RESERVOIR FLUIDS PVT PROPERTIES CALIBRATION ON SUPERFICIAL VELOCITIES AND LIQUID HOLDUP
title_fullStr SENSITIVITY STUDY OF THE RESERVOIR FLUIDS PVT PROPERTIES CALIBRATION ON SUPERFICIAL VELOCITIES AND LIQUID HOLDUP
title_full_unstemmed SENSITIVITY STUDY OF THE RESERVOIR FLUIDS PVT PROPERTIES CALIBRATION ON SUPERFICIAL VELOCITIES AND LIQUID HOLDUP
title_short SENSITIVITY STUDY OF THE RESERVOIR FLUIDS PVT PROPERTIES CALIBRATION ON SUPERFICIAL VELOCITIES AND LIQUID HOLDUP
title_sort sensitivity study of the reservoir fluids pvt properties calibration on superficial velocities and liquid holdup
topic holdup fraction
upward two-phase flow
superficial velocity
pvt properties
url http://jpgt.upg-ploiesti.ro/wp-content/uploads/2020/12/2_2020_nr-2_Marcu-M.pdf
work_keys_str_mv AT marieamarcu sensitivitystudyofthereservoirfluidspvtpropertiescalibrationonsuperficialvelocitiesandliquidholdup