Lowering the phase trap damage in the tight gas reservoirs by using interfacial tension (IFT) reducers
Tight-gas reservoirs have low permeability and significant damage. When drilling the tight formations, wellbore liquid invades the formation and increases water saturation of the near wellbore area and significantly deceases permeability of this area. Because of the invasion, the permeability of the...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
Australian Petroleum Production and Exploration Association
2013
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/11323 |
| _version_ | 1848747774891261952 |
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| author | Lu, Y. Bahrami, Hassan Hossain, Mofazzal Jamili, A. Ahmed, A. Qiu, C. |
| author_facet | Lu, Y. Bahrami, Hassan Hossain, Mofazzal Jamili, A. Ahmed, A. Qiu, C. |
| author_sort | Lu, Y. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Tight-gas reservoirs have low permeability and significant damage. When drilling the tight formations, wellbore liquid invades the formation and increases water saturation of the near wellbore area and significantly deceases permeability of this area. Because of the invasion, the permeability of the invasion zone near the wellbore in tight-gas formations significantly decreases. This damage is mainly controlled by wettability and capillary pressure (Pc). One of the methods to improve productivity of tight-gas reservoirs is to reduce IFT between formation gas and invaded water to remove phase trapping. The invasion of wellbore liquid into tight formations can damage permeability controlled by Pc and relative permeability curves. In the case of drilling by using a water-based mud, tight formations are sensitive to the invasion damage due to the high-critical water saturation and capillary pressures. Reducing the Pc is an effective way to increase the well productivity. Using the IFT reducers, Pc effect is reduced and trapped phase can be recovered; therefore, productivity of the TGS reservoirs can be increased significantly. This study focuses on reducing phase-trapping damage in tight reservoirs by using reservoir simulation to examine the methods, such use of IFT reducers in water-baseddrilled tight formations, that can reduce Pc effect. The Pc and relative permeability curves are corrected based on the reduced IFT; they are then input to the reservoir simulation model to quantitatively understand how IFT reducers can help improve productivity of tight reservoirs. |
| first_indexed | 2025-11-14T06:54:30Z |
| format | Journal Article |
| id | curtin-20.500.11937-11323 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:54:30Z |
| publishDate | 2013 |
| publisher | Australian Petroleum Production and Exploration Association |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-113232017-01-30T11:24:04Z Lowering the phase trap damage in the tight gas reservoirs by using interfacial tension (IFT) reducers Lu, Y. Bahrami, Hassan Hossain, Mofazzal Jamili, A. Ahmed, A. Qiu, C. Tight-gas reservoirs interfacial tension - (IFT) capillary pressure (Pc) relative permeability phase-trapping damage Tight-gas reservoirs have low permeability and significant damage. When drilling the tight formations, wellbore liquid invades the formation and increases water saturation of the near wellbore area and significantly deceases permeability of this area. Because of the invasion, the permeability of the invasion zone near the wellbore in tight-gas formations significantly decreases. This damage is mainly controlled by wettability and capillary pressure (Pc). One of the methods to improve productivity of tight-gas reservoirs is to reduce IFT between formation gas and invaded water to remove phase trapping. The invasion of wellbore liquid into tight formations can damage permeability controlled by Pc and relative permeability curves. In the case of drilling by using a water-based mud, tight formations are sensitive to the invasion damage due to the high-critical water saturation and capillary pressures. Reducing the Pc is an effective way to increase the well productivity. Using the IFT reducers, Pc effect is reduced and trapped phase can be recovered; therefore, productivity of the TGS reservoirs can be increased significantly. This study focuses on reducing phase-trapping damage in tight reservoirs by using reservoir simulation to examine the methods, such use of IFT reducers in water-baseddrilled tight formations, that can reduce Pc effect. The Pc and relative permeability curves are corrected based on the reduced IFT; they are then input to the reservoir simulation model to quantitatively understand how IFT reducers can help improve productivity of tight reservoirs. 2013 Journal Article http://hdl.handle.net/20.500.11937/11323 Australian Petroleum Production and Exploration Association restricted |
| spellingShingle | Tight-gas reservoirs interfacial tension - (IFT) capillary pressure (Pc) relative permeability phase-trapping damage Lu, Y. Bahrami, Hassan Hossain, Mofazzal Jamili, A. Ahmed, A. Qiu, C. Lowering the phase trap damage in the tight gas reservoirs by using interfacial tension (IFT) reducers |
| title | Lowering the phase trap damage in the tight gas reservoirs by using interfacial tension (IFT) reducers |
| title_full | Lowering the phase trap damage in the tight gas reservoirs by using interfacial tension (IFT) reducers |
| title_fullStr | Lowering the phase trap damage in the tight gas reservoirs by using interfacial tension (IFT) reducers |
| title_full_unstemmed | Lowering the phase trap damage in the tight gas reservoirs by using interfacial tension (IFT) reducers |
| title_short | Lowering the phase trap damage in the tight gas reservoirs by using interfacial tension (IFT) reducers |
| title_sort | lowering the phase trap damage in the tight gas reservoirs by using interfacial tension (ift) reducers |
| topic | Tight-gas reservoirs interfacial tension - (IFT) capillary pressure (Pc) relative permeability phase-trapping damage |
| url | http://hdl.handle.net/20.500.11937/11323 |