Simulation of temperature-pressure profiles and wax deposition in gas-lift wells
Gas-lift is an artificial lift method in which gas is injected down the tubing- -casing annulus and enters the production tubing through the gas-lift valves to reduce the hydrostatic pressure of the formation fluid column. The gas changes pressure, temperature and fluid composition profiles througho...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Association of the Chemical Engineers of Serbia
2017-01-01
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| Series: | Chemical Industry and Chemical Engineering Quarterly |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1451-9372/2017/1451-93721700006S.pdf |
| _version_ | 1818139674258964480 |
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| author | Sevic Snezana Grubac Branko |
| author_facet | Sevic Snezana Grubac Branko |
| author_sort | Sevic Snezana |
| collection | DOAJ |
| description | Gas-lift is an artificial lift method in which gas is injected down the tubing- -casing annulus and enters the production tubing through the gas-lift valves to reduce the hydrostatic pressure of the formation fluid column. The gas changes pressure, temperature and fluid composition profiles throughout the production tubing string. Temperature and pressure drop along with the fluid composition changes throughout the tubing string can lead to wax, asphaltenes and inorganic salts deposition, increased emulsion stability and hydrate formation. This paper presents a new model that can sucesfully simulate temperature and pressure profiles and fluid composition changes in oil well that operates by means of gas-lift. This new model includes a pipe-in-pipe segment (production tubing inside production casing), countercurrent flow of gas-lift gas and producing fluid, heat exchange between gas-lift gas and the surrounding ambient – ground; and gas-lift gas with the fluid in the tubing. The model enables a better understanding of the multiphase fluid flow up the production tubing. Model was used to get insight into severity and locations of wax deposition. The obtained information on wax deposition can be used to plan the frequency and depth of wax removing operations. Model was developed using Aspen HYSYS software. |
| first_indexed | 2024-12-11T10:31:50Z |
| format | Article |
| id | doaj.art-658170073e29421d9d185ddd2f35fd90 |
| institution | Directory Open Access Journal |
| issn | 1451-9372 2217-7434 |
| language | English |
| last_indexed | 2024-12-11T10:31:50Z |
| publishDate | 2017-01-01 |
| publisher | Association of the Chemical Engineers of Serbia |
| record_format | Article |
| series | Chemical Industry and Chemical Engineering Quarterly |
| spelling | doaj.art-658170073e29421d9d185ddd2f35fd902022-12-22T01:10:55ZengAssociation of the Chemical Engineers of SerbiaChemical Industry and Chemical Engineering Quarterly1451-93722217-74342017-01-0123453754510.2298/CICEQ161014006S1451-93721700006SSimulation of temperature-pressure profiles and wax deposition in gas-lift wellsSevic Snezana0Grubac Branko1PM Lucas Enterprises, KacPM Lucas Enterprises, KacGas-lift is an artificial lift method in which gas is injected down the tubing- -casing annulus and enters the production tubing through the gas-lift valves to reduce the hydrostatic pressure of the formation fluid column. The gas changes pressure, temperature and fluid composition profiles throughout the production tubing string. Temperature and pressure drop along with the fluid composition changes throughout the tubing string can lead to wax, asphaltenes and inorganic salts deposition, increased emulsion stability and hydrate formation. This paper presents a new model that can sucesfully simulate temperature and pressure profiles and fluid composition changes in oil well that operates by means of gas-lift. This new model includes a pipe-in-pipe segment (production tubing inside production casing), countercurrent flow of gas-lift gas and producing fluid, heat exchange between gas-lift gas and the surrounding ambient – ground; and gas-lift gas with the fluid in the tubing. The model enables a better understanding of the multiphase fluid flow up the production tubing. Model was used to get insight into severity and locations of wax deposition. The obtained information on wax deposition can be used to plan the frequency and depth of wax removing operations. Model was developed using Aspen HYSYS software.http://www.doiserbia.nb.rs/img/doi/1451-9372/2017/1451-93721700006S.pdfgas-liftoil wellpressure-temperature profilesimulationwax deposition |
| spellingShingle | Sevic Snezana Grubac Branko Simulation of temperature-pressure profiles and wax deposition in gas-lift wells Chemical Industry and Chemical Engineering Quarterly gas-lift oil well pressure-temperature profile simulation wax deposition |
| title | Simulation of temperature-pressure profiles and wax deposition in gas-lift wells |
| title_full | Simulation of temperature-pressure profiles and wax deposition in gas-lift wells |
| title_fullStr | Simulation of temperature-pressure profiles and wax deposition in gas-lift wells |
| title_full_unstemmed | Simulation of temperature-pressure profiles and wax deposition in gas-lift wells |
| title_short | Simulation of temperature-pressure profiles and wax deposition in gas-lift wells |
| title_sort | simulation of temperature pressure profiles and wax deposition in gas lift wells |
| topic | gas-lift oil well pressure-temperature profile simulation wax deposition |
| url | http://www.doiserbia.nb.rs/img/doi/1451-9372/2017/1451-93721700006S.pdf |
| work_keys_str_mv | AT sevicsnezana simulationoftemperaturepressureprofilesandwaxdepositioningasliftwells AT grubacbranko simulationoftemperaturepressureprofilesandwaxdepositioningasliftwells |