Effects of gas injection combined with wettability alteration on boundary water inrush
The inrush of boundary water can aggravate water blockage during the middle-late-aquifer influx period, which is frequently encountered in various gas reservoirs. This study attempts to use gas injection combined with wettability alteration to address this problem. Gas injection experiments were con...
Ausführliche Beschreibung
Autor*in: |
Liu, Zhao [verfasserIn] Sun, Youhong [verfasserIn] Guo, Wei [verfasserIn] Li, Qiang [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2021 |
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Schlagwörter: |
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Übergeordnetes Werk: |
Enthalten in: Journal of natural gas science and engineering - Amsterdam [u.a.] : Elsevier, 2009, 90 |
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Übergeordnetes Werk: |
volume:90 |
DOI / URN: |
10.1016/j.jngse.2021.103920 |
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Katalog-ID: |
ELV005927951 |
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520 | |a The inrush of boundary water can aggravate water blockage during the middle-late-aquifer influx period, which is frequently encountered in various gas reservoirs. This study attempts to use gas injection combined with wettability alteration to address this problem. Gas injection experiments were conducted using a visual flow cell with and without wettability alteration, considering both continuous and temporary gas injection. Intercepting the boundary water, as a core characteristic of gas injection, was investigated. The results showed that the relative hydraulic conductivity was reduced to approximately 0.1 by combining continuous gas injection with wettability alteration to gas-wet, indicating that this method can potentially be applied in gas reservoirs with large hydraulic gradients. In addition, the flow path of the gas is smoother and shorter in the porous medium with wettability alteration, and the desaturated zone presents a conical development at different gas flow rates. After temporary gas injection in a porous medium with wettability alteration, the relative hydraulic conductivity can be reduced to less than 0.4 due to the internal trapped gas. Hence, temporary gas injection combined with wettability alteration can be applied when the hydraulic gradient is small. It is hoped that these results can provide new insights for addressing the boundary water inrush. | ||
650 | 4 | |a Gas reservoir | |
650 | 4 | |a Boundary water inrush | |
650 | 4 | |a Gas injection | |
650 | 4 | |a Desaturated zone | |
650 | 4 | |a Wettability alteration | |
650 | 4 | |a Trapped gas | |
700 | 1 | |a Sun, Youhong |e verfasserin |4 aut | |
700 | 1 | |a Guo, Wei |e verfasserin |4 aut | |
700 | 1 | |a Li, Qiang |e verfasserin |4 aut | |
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2021 |
allfields |
10.1016/j.jngse.2021.103920 doi (DE-627)ELV005927951 (ELSEVIER)S1875-5100(21)00127-X DE-627 ger DE-627 rda eng 660 DE-600 Liu, Zhao verfasserin aut Effects of gas injection combined with wettability alteration on boundary water inrush 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The inrush of boundary water can aggravate water blockage during the middle-late-aquifer influx period, which is frequently encountered in various gas reservoirs. This study attempts to use gas injection combined with wettability alteration to address this problem. Gas injection experiments were conducted using a visual flow cell with and without wettability alteration, considering both continuous and temporary gas injection. Intercepting the boundary water, as a core characteristic of gas injection, was investigated. The results showed that the relative hydraulic conductivity was reduced to approximately 0.1 by combining continuous gas injection with wettability alteration to gas-wet, indicating that this method can potentially be applied in gas reservoirs with large hydraulic gradients. In addition, the flow path of the gas is smoother and shorter in the porous medium with wettability alteration, and the desaturated zone presents a conical development at different gas flow rates. After temporary gas injection in a porous medium with wettability alteration, the relative hydraulic conductivity can be reduced to less than 0.4 due to the internal trapped gas. Hence, temporary gas injection combined with wettability alteration can be applied when the hydraulic gradient is small. It is hoped that these results can provide new insights for addressing the boundary water inrush. Gas reservoir Boundary water inrush Gas injection Desaturated zone Wettability alteration Trapped gas Sun, Youhong verfasserin aut Guo, Wei verfasserin aut Li, Qiang verfasserin aut Enthalten in Journal of natural gas science and engineering Amsterdam [u.a.] : Elsevier, 2009 90 Online-Ressource (DE-627)608943231 (DE-600)2514802-3 (DE-576)311098436 1875-5100 nnns volume:90 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_165 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 AR 90 |
spelling |
10.1016/j.jngse.2021.103920 doi (DE-627)ELV005927951 (ELSEVIER)S1875-5100(21)00127-X DE-627 ger DE-627 rda eng 660 DE-600 Liu, Zhao verfasserin aut Effects of gas injection combined with wettability alteration on boundary water inrush 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The inrush of boundary water can aggravate water blockage during the middle-late-aquifer influx period, which is frequently encountered in various gas reservoirs. This study attempts to use gas injection combined with wettability alteration to address this problem. Gas injection experiments were conducted using a visual flow cell with and without wettability alteration, considering both continuous and temporary gas injection. Intercepting the boundary water, as a core characteristic of gas injection, was investigated. The results showed that the relative hydraulic conductivity was reduced to approximately 0.1 by combining continuous gas injection with wettability alteration to gas-wet, indicating that this method can potentially be applied in gas reservoirs with large hydraulic gradients. In addition, the flow path of the gas is smoother and shorter in the porous medium with wettability alteration, and the desaturated zone presents a conical development at different gas flow rates. After temporary gas injection in a porous medium with wettability alteration, the relative hydraulic conductivity can be reduced to less than 0.4 due to the internal trapped gas. Hence, temporary gas injection combined with wettability alteration can be applied when the hydraulic gradient is small. It is hoped that these results can provide new insights for addressing the boundary water inrush. Gas reservoir Boundary water inrush Gas injection Desaturated zone Wettability alteration Trapped gas Sun, Youhong verfasserin aut Guo, Wei verfasserin aut Li, Qiang verfasserin aut Enthalten in Journal of natural gas science and engineering Amsterdam [u.a.] : Elsevier, 2009 90 Online-Ressource (DE-627)608943231 (DE-600)2514802-3 (DE-576)311098436 1875-5100 nnns volume:90 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_165 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 AR 90 |
allfields_unstemmed |
10.1016/j.jngse.2021.103920 doi (DE-627)ELV005927951 (ELSEVIER)S1875-5100(21)00127-X DE-627 ger DE-627 rda eng 660 DE-600 Liu, Zhao verfasserin aut Effects of gas injection combined with wettability alteration on boundary water inrush 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The inrush of boundary water can aggravate water blockage during the middle-late-aquifer influx period, which is frequently encountered in various gas reservoirs. This study attempts to use gas injection combined with wettability alteration to address this problem. Gas injection experiments were conducted using a visual flow cell with and without wettability alteration, considering both continuous and temporary gas injection. Intercepting the boundary water, as a core characteristic of gas injection, was investigated. The results showed that the relative hydraulic conductivity was reduced to approximately 0.1 by combining continuous gas injection with wettability alteration to gas-wet, indicating that this method can potentially be applied in gas reservoirs with large hydraulic gradients. In addition, the flow path of the gas is smoother and shorter in the porous medium with wettability alteration, and the desaturated zone presents a conical development at different gas flow rates. After temporary gas injection in a porous medium with wettability alteration, the relative hydraulic conductivity can be reduced to less than 0.4 due to the internal trapped gas. Hence, temporary gas injection combined with wettability alteration can be applied when the hydraulic gradient is small. It is hoped that these results can provide new insights for addressing the boundary water inrush. Gas reservoir Boundary water inrush Gas injection Desaturated zone Wettability alteration Trapped gas Sun, Youhong verfasserin aut Guo, Wei verfasserin aut Li, Qiang verfasserin aut Enthalten in Journal of natural gas science and engineering Amsterdam [u.a.] : Elsevier, 2009 90 Online-Ressource (DE-627)608943231 (DE-600)2514802-3 (DE-576)311098436 1875-5100 nnns volume:90 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_165 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 AR 90 |
allfieldsGer |
10.1016/j.jngse.2021.103920 doi (DE-627)ELV005927951 (ELSEVIER)S1875-5100(21)00127-X DE-627 ger DE-627 rda eng 660 DE-600 Liu, Zhao verfasserin aut Effects of gas injection combined with wettability alteration on boundary water inrush 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The inrush of boundary water can aggravate water blockage during the middle-late-aquifer influx period, which is frequently encountered in various gas reservoirs. This study attempts to use gas injection combined with wettability alteration to address this problem. Gas injection experiments were conducted using a visual flow cell with and without wettability alteration, considering both continuous and temporary gas injection. Intercepting the boundary water, as a core characteristic of gas injection, was investigated. The results showed that the relative hydraulic conductivity was reduced to approximately 0.1 by combining continuous gas injection with wettability alteration to gas-wet, indicating that this method can potentially be applied in gas reservoirs with large hydraulic gradients. In addition, the flow path of the gas is smoother and shorter in the porous medium with wettability alteration, and the desaturated zone presents a conical development at different gas flow rates. After temporary gas injection in a porous medium with wettability alteration, the relative hydraulic conductivity can be reduced to less than 0.4 due to the internal trapped gas. Hence, temporary gas injection combined with wettability alteration can be applied when the hydraulic gradient is small. It is hoped that these results can provide new insights for addressing the boundary water inrush. Gas reservoir Boundary water inrush Gas injection Desaturated zone Wettability alteration Trapped gas Sun, Youhong verfasserin aut Guo, Wei verfasserin aut Li, Qiang verfasserin aut Enthalten in Journal of natural gas science and engineering Amsterdam [u.a.] : Elsevier, 2009 90 Online-Ressource (DE-627)608943231 (DE-600)2514802-3 (DE-576)311098436 1875-5100 nnns volume:90 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_165 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 AR 90 |
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10.1016/j.jngse.2021.103920 doi (DE-627)ELV005927951 (ELSEVIER)S1875-5100(21)00127-X DE-627 ger DE-627 rda eng 660 DE-600 Liu, Zhao verfasserin aut Effects of gas injection combined with wettability alteration on boundary water inrush 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The inrush of boundary water can aggravate water blockage during the middle-late-aquifer influx period, which is frequently encountered in various gas reservoirs. This study attempts to use gas injection combined with wettability alteration to address this problem. Gas injection experiments were conducted using a visual flow cell with and without wettability alteration, considering both continuous and temporary gas injection. Intercepting the boundary water, as a core characteristic of gas injection, was investigated. The results showed that the relative hydraulic conductivity was reduced to approximately 0.1 by combining continuous gas injection with wettability alteration to gas-wet, indicating that this method can potentially be applied in gas reservoirs with large hydraulic gradients. In addition, the flow path of the gas is smoother and shorter in the porous medium with wettability alteration, and the desaturated zone presents a conical development at different gas flow rates. After temporary gas injection in a porous medium with wettability alteration, the relative hydraulic conductivity can be reduced to less than 0.4 due to the internal trapped gas. Hence, temporary gas injection combined with wettability alteration can be applied when the hydraulic gradient is small. It is hoped that these results can provide new insights for addressing the boundary water inrush. Gas reservoir Boundary water inrush Gas injection Desaturated zone Wettability alteration Trapped gas Sun, Youhong verfasserin aut Guo, Wei verfasserin aut Li, Qiang verfasserin aut Enthalten in Journal of natural gas science and engineering Amsterdam [u.a.] : Elsevier, 2009 90 Online-Ressource (DE-627)608943231 (DE-600)2514802-3 (DE-576)311098436 1875-5100 nnns volume:90 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_165 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 AR 90 |
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Journal of natural gas science and engineering |
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Journal of natural gas science and engineering |
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eng |
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600 - Technology |
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2021 |
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author_browse |
Liu, Zhao Sun, Youhong Guo, Wei Li, Qiang |
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90 |
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Elektronische Aufsätze |
author-letter |
Liu, Zhao |
doi_str_mv |
10.1016/j.jngse.2021.103920 |
dewey-full |
660 |
author2-role |
verfasserin |
title_sort |
effects of gas injection combined with wettability alteration on boundary water inrush |
title_auth |
Effects of gas injection combined with wettability alteration on boundary water inrush |
abstract |
The inrush of boundary water can aggravate water blockage during the middle-late-aquifer influx period, which is frequently encountered in various gas reservoirs. This study attempts to use gas injection combined with wettability alteration to address this problem. Gas injection experiments were conducted using a visual flow cell with and without wettability alteration, considering both continuous and temporary gas injection. Intercepting the boundary water, as a core characteristic of gas injection, was investigated. The results showed that the relative hydraulic conductivity was reduced to approximately 0.1 by combining continuous gas injection with wettability alteration to gas-wet, indicating that this method can potentially be applied in gas reservoirs with large hydraulic gradients. In addition, the flow path of the gas is smoother and shorter in the porous medium with wettability alteration, and the desaturated zone presents a conical development at different gas flow rates. After temporary gas injection in a porous medium with wettability alteration, the relative hydraulic conductivity can be reduced to less than 0.4 due to the internal trapped gas. Hence, temporary gas injection combined with wettability alteration can be applied when the hydraulic gradient is small. It is hoped that these results can provide new insights for addressing the boundary water inrush. |
abstractGer |
The inrush of boundary water can aggravate water blockage during the middle-late-aquifer influx period, which is frequently encountered in various gas reservoirs. This study attempts to use gas injection combined with wettability alteration to address this problem. Gas injection experiments were conducted using a visual flow cell with and without wettability alteration, considering both continuous and temporary gas injection. Intercepting the boundary water, as a core characteristic of gas injection, was investigated. The results showed that the relative hydraulic conductivity was reduced to approximately 0.1 by combining continuous gas injection with wettability alteration to gas-wet, indicating that this method can potentially be applied in gas reservoirs with large hydraulic gradients. In addition, the flow path of the gas is smoother and shorter in the porous medium with wettability alteration, and the desaturated zone presents a conical development at different gas flow rates. After temporary gas injection in a porous medium with wettability alteration, the relative hydraulic conductivity can be reduced to less than 0.4 due to the internal trapped gas. Hence, temporary gas injection combined with wettability alteration can be applied when the hydraulic gradient is small. It is hoped that these results can provide new insights for addressing the boundary water inrush. |
abstract_unstemmed |
The inrush of boundary water can aggravate water blockage during the middle-late-aquifer influx period, which is frequently encountered in various gas reservoirs. This study attempts to use gas injection combined with wettability alteration to address this problem. Gas injection experiments were conducted using a visual flow cell with and without wettability alteration, considering both continuous and temporary gas injection. Intercepting the boundary water, as a core characteristic of gas injection, was investigated. The results showed that the relative hydraulic conductivity was reduced to approximately 0.1 by combining continuous gas injection with wettability alteration to gas-wet, indicating that this method can potentially be applied in gas reservoirs with large hydraulic gradients. In addition, the flow path of the gas is smoother and shorter in the porous medium with wettability alteration, and the desaturated zone presents a conical development at different gas flow rates. After temporary gas injection in a porous medium with wettability alteration, the relative hydraulic conductivity can be reduced to less than 0.4 due to the internal trapped gas. Hence, temporary gas injection combined with wettability alteration can be applied when the hydraulic gradient is small. It is hoped that these results can provide new insights for addressing the boundary water inrush. |
collection_details |
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title_short |
Effects of gas injection combined with wettability alteration on boundary water inrush |
remote_bool |
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author2 |
Sun, Youhong Guo, Wei Li, Qiang |
author2Str |
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doi_str |
10.1016/j.jngse.2021.103920 |
up_date |
2024-07-06T19:38:38.963Z |
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