A Geochemical Model of Fluids and Mineral Interactions for Deep Hydrocarbon Reservoirs
A mutual solubility model for CO2-CH4-brine systems is constructed in this work as a fundamental research for applications of deep hydrocarbon exploration and production. The model is validated to be accurate for wide ranges of temperature (0–250°C), pressure (1–1500 bar), and salinity (NaCl molalit...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2017/3482603 |
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| author | Jun Li Raheel Ahmed Qian Zhang Yongfan Guo Xiaochun Li |
| author_facet | Jun Li Raheel Ahmed Qian Zhang Yongfan Guo Xiaochun Li |
| author_sort | Jun Li |
| collection | DOAJ |
| description | A mutual solubility model for CO2-CH4-brine systems is constructed in this work as a fundamental research for applications of deep hydrocarbon exploration and production. The model is validated to be accurate for wide ranges of temperature (0–250°C), pressure (1–1500 bar), and salinity (NaCl molality from 0 to more than 6 mole/KgW). Combining this model with PHREEQC functionalities, CO2-CH4-brine-carbonate-sulfate equilibrium is calculated. From the calculations, we conclude that, for CO2-CH4-brine-carbonate systems, at deeper positions, magnesium is more likely to be dissolved in aqueous phase and calcite can be more stable than dolomite and, for CO2-CH4-brine-sulfate systems, with a presence of CH4, sulfate ions are likely to be reduced to S2− and H2S in gas phase could be released after S2− saturated in the solution. The hydrocarbon “souring” process could be reproduced from geochemical calculations in this work. |
| format | Article |
| id | doaj-art-bba032deac934166a43cf64ca8c22c13 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-bba032deac934166a43cf64ca8c22c132025-02-03T06:13:18ZengWileyGeofluids1468-81151468-81232017-01-01201710.1155/2017/34826033482603A Geochemical Model of Fluids and Mineral Interactions for Deep Hydrocarbon ReservoirsJun Li0Raheel Ahmed1Qian Zhang2Yongfan Guo3Xiaochun Li4State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, ChinaDimue Technology Ltd. Co., Wuhan, ChinaState Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, ChinaState Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, ChinaState Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, ChinaA mutual solubility model for CO2-CH4-brine systems is constructed in this work as a fundamental research for applications of deep hydrocarbon exploration and production. The model is validated to be accurate for wide ranges of temperature (0–250°C), pressure (1–1500 bar), and salinity (NaCl molality from 0 to more than 6 mole/KgW). Combining this model with PHREEQC functionalities, CO2-CH4-brine-carbonate-sulfate equilibrium is calculated. From the calculations, we conclude that, for CO2-CH4-brine-carbonate systems, at deeper positions, magnesium is more likely to be dissolved in aqueous phase and calcite can be more stable than dolomite and, for CO2-CH4-brine-sulfate systems, with a presence of CH4, sulfate ions are likely to be reduced to S2− and H2S in gas phase could be released after S2− saturated in the solution. The hydrocarbon “souring” process could be reproduced from geochemical calculations in this work.http://dx.doi.org/10.1155/2017/3482603 |
| spellingShingle | Jun Li Raheel Ahmed Qian Zhang Yongfan Guo Xiaochun Li A Geochemical Model of Fluids and Mineral Interactions for Deep Hydrocarbon Reservoirs Geofluids |
| title | A Geochemical Model of Fluids and Mineral Interactions for Deep Hydrocarbon Reservoirs |
| title_full | A Geochemical Model of Fluids and Mineral Interactions for Deep Hydrocarbon Reservoirs |
| title_fullStr | A Geochemical Model of Fluids and Mineral Interactions for Deep Hydrocarbon Reservoirs |
| title_full_unstemmed | A Geochemical Model of Fluids and Mineral Interactions for Deep Hydrocarbon Reservoirs |
| title_short | A Geochemical Model of Fluids and Mineral Interactions for Deep Hydrocarbon Reservoirs |
| title_sort | geochemical model of fluids and mineral interactions for deep hydrocarbon reservoirs |
| url | http://dx.doi.org/10.1155/2017/3482603 |
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