Effect of Clay Mineral Composition on Low-Salinity Water Flooding
Low-salinity water (LSW) flooding technology has obvious operational and economic advantages, so it is applied to practice in many oilfields. However, there are differences in the oil recovery efficiencies in different oilfields, the reasons for which need to be further studied and discussed. This p...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/11/12/3317 |
| _version_ | 1798039198917197824 |
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| author | Shan Jiang Pingping Liang Yujiao Han |
| author_facet | Shan Jiang Pingping Liang Yujiao Han |
| author_sort | Shan Jiang |
| collection | DOAJ |
| description | Low-salinity water (LSW) flooding technology has obvious operational and economic advantages, so it is applied to practice in many oilfields. However, there are differences in the oil recovery efficiencies in different oilfields, the reasons for which need to be further studied and discussed. This paper studies the effect of different clay mineral compositions on low-salinity water flooding. For this purpose, three groups of core displacement experiments were designed with cores containing different clay mineral compositions for comparison. In the process of formation water and low-salinity water driving, the oil recovery and produced-water properties were measured. By comparing the two types of water flooding, it was found that the cores with the highest montmorillonite content had the best effect (5.7%) on low-salinity water flooding and the cores with the highest kaolinite content had the least effect (1.9%). This phenomenon is closely related to the difference in ion exchange capacity of the clay minerals. Moreover, after switching to low-salinity water flooding, the interfacial tension and wetting angle of the produced-water increased and the value of pH decreased, which are important mechanisms for enhancing oil recovery by low-salinity water flooding. This study reveals the influence of clay mineral composition on low-salinity water flooding and can provide more guidance for conventional and unconventional oilfield application of low-salinity water flooding technology. |
| first_indexed | 2024-04-11T21:50:36Z |
| format | Article |
| id | doaj.art-87483d77af2647b0931f8e7b3f3b9890 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T21:50:36Z |
| publishDate | 2018-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-87483d77af2647b0931f8e7b3f3b98902022-12-22T04:01:15ZengMDPI AGEnergies1996-10732018-11-011112331710.3390/en11123317en11123317Effect of Clay Mineral Composition on Low-Salinity Water FloodingShan Jiang0Pingping Liang1Yujiao Han2Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, ChinaResearch Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, ChinaResearch Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, ChinaLow-salinity water (LSW) flooding technology has obvious operational and economic advantages, so it is applied to practice in many oilfields. However, there are differences in the oil recovery efficiencies in different oilfields, the reasons for which need to be further studied and discussed. This paper studies the effect of different clay mineral compositions on low-salinity water flooding. For this purpose, three groups of core displacement experiments were designed with cores containing different clay mineral compositions for comparison. In the process of formation water and low-salinity water driving, the oil recovery and produced-water properties were measured. By comparing the two types of water flooding, it was found that the cores with the highest montmorillonite content had the best effect (5.7%) on low-salinity water flooding and the cores with the highest kaolinite content had the least effect (1.9%). This phenomenon is closely related to the difference in ion exchange capacity of the clay minerals. Moreover, after switching to low-salinity water flooding, the interfacial tension and wetting angle of the produced-water increased and the value of pH decreased, which are important mechanisms for enhancing oil recovery by low-salinity water flooding. This study reveals the influence of clay mineral composition on low-salinity water flooding and can provide more guidance for conventional and unconventional oilfield application of low-salinity water flooding technology.https://www.mdpi.com/1996-1073/11/12/3317low-salinity water floodingclay mineral compositionenhanced oil recoverywetting anglepH of formation water |
| spellingShingle | Shan Jiang Pingping Liang Yujiao Han Effect of Clay Mineral Composition on Low-Salinity Water Flooding Energies low-salinity water flooding clay mineral composition enhanced oil recovery wetting angle pH of formation water |
| title | Effect of Clay Mineral Composition on Low-Salinity Water Flooding |
| title_full | Effect of Clay Mineral Composition on Low-Salinity Water Flooding |
| title_fullStr | Effect of Clay Mineral Composition on Low-Salinity Water Flooding |
| title_full_unstemmed | Effect of Clay Mineral Composition on Low-Salinity Water Flooding |
| title_short | Effect of Clay Mineral Composition on Low-Salinity Water Flooding |
| title_sort | effect of clay mineral composition on low salinity water flooding |
| topic | low-salinity water flooding clay mineral composition enhanced oil recovery wetting angle pH of formation water |
| url | https://www.mdpi.com/1996-1073/11/12/3317 |
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