Laboratory Study on the Potential EOR Use of HPAM/VES Hybrid in High-Temperature and High-Salinity Oil Reservoirs
Polymer flooding represents one of the most efficient processes to enhance oil recovery, and partially hydrolyzed polyacrylamide (HPAM) is a widely used oil-displacement agent, but its poor thermal stability, salt tolerance, and mechanical degradation impeded its use in high-temperature and high-sal...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2013/927519 |
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| author | Dingwei Zhu Jichao Zhang Yugui Han Hongyan Wang Yujun Feng |
| author_facet | Dingwei Zhu Jichao Zhang Yugui Han Hongyan Wang Yujun Feng |
| author_sort | Dingwei Zhu |
| collection | DOAJ |
| description | Polymer flooding represents one of the most efficient processes to enhance oil recovery, and partially hydrolyzed polyacrylamide (HPAM) is a widely used oil-displacement agent, but its poor thermal stability, salt tolerance, and mechanical degradation impeded its use in high-temperature and high-salinity oil reservoirs. In this work, a novel viscoelastic surfactant, erucyl dimethyl amidobetaine (EDAB), with improved thermal stability and salinity tolerance, was complexed with HPAM to overcome the deficiencies of HPAM. The HPAM/EDAB hybrid samples were studied in comparison with HPAM and EDAB in synthetic brine regarding their rheological behaviors and core flooding experiments under simulated high-temperature and high-salinity oil reservoir conditions (T: 85°C; total dissolved solids: 32,868 mg/L; [Ca2+] + [Mg2+]: 873 mg/L). It was found that the HPAM/EDAB hybrids exhibited much better heat- and salinity-tolerance and long-term thermal stability than HPAM. Core flooding tests showed that the oil recovery factors of HPAM/EDAB hybrids are between those of HPAM and EDAB. These results are attributed to the synergistic effect between HPAM and EDAB in the hybrid. |
| format | Article |
| id | doaj-art-df60d5464ad649d3aa80c9803b9fd94f |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-df60d5464ad649d3aa80c9803b9fd94f2025-02-03T01:25:55ZengWileyJournal of Chemistry2090-90632090-90712013-01-01201310.1155/2013/927519927519Laboratory Study on the Potential EOR Use of HPAM/VES Hybrid in High-Temperature and High-Salinity Oil ReservoirsDingwei Zhu0Jichao Zhang1Yugui Han2Hongyan Wang3Yujun Feng4Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, ChinaEOR Laboratory, Geological Scientific Research Institute, Shengli Oilfield Company of SINOPEC, Dongying 257013, ChinaEOR Laboratory, Geological Scientific Research Institute, Shengli Oilfield Company of SINOPEC, Dongying 257013, ChinaEOR Laboratory, Geological Scientific Research Institute, Shengli Oilfield Company of SINOPEC, Dongying 257013, ChinaChengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, ChinaPolymer flooding represents one of the most efficient processes to enhance oil recovery, and partially hydrolyzed polyacrylamide (HPAM) is a widely used oil-displacement agent, but its poor thermal stability, salt tolerance, and mechanical degradation impeded its use in high-temperature and high-salinity oil reservoirs. In this work, a novel viscoelastic surfactant, erucyl dimethyl amidobetaine (EDAB), with improved thermal stability and salinity tolerance, was complexed with HPAM to overcome the deficiencies of HPAM. The HPAM/EDAB hybrid samples were studied in comparison with HPAM and EDAB in synthetic brine regarding their rheological behaviors and core flooding experiments under simulated high-temperature and high-salinity oil reservoir conditions (T: 85°C; total dissolved solids: 32,868 mg/L; [Ca2+] + [Mg2+]: 873 mg/L). It was found that the HPAM/EDAB hybrids exhibited much better heat- and salinity-tolerance and long-term thermal stability than HPAM. Core flooding tests showed that the oil recovery factors of HPAM/EDAB hybrids are between those of HPAM and EDAB. These results are attributed to the synergistic effect between HPAM and EDAB in the hybrid.http://dx.doi.org/10.1155/2013/927519 |
| spellingShingle | Dingwei Zhu Jichao Zhang Yugui Han Hongyan Wang Yujun Feng Laboratory Study on the Potential EOR Use of HPAM/VES Hybrid in High-Temperature and High-Salinity Oil Reservoirs Journal of Chemistry |
| title | Laboratory Study on the Potential EOR Use of HPAM/VES Hybrid in High-Temperature and High-Salinity Oil Reservoirs |
| title_full | Laboratory Study on the Potential EOR Use of HPAM/VES Hybrid in High-Temperature and High-Salinity Oil Reservoirs |
| title_fullStr | Laboratory Study on the Potential EOR Use of HPAM/VES Hybrid in High-Temperature and High-Salinity Oil Reservoirs |
| title_full_unstemmed | Laboratory Study on the Potential EOR Use of HPAM/VES Hybrid in High-Temperature and High-Salinity Oil Reservoirs |
| title_short | Laboratory Study on the Potential EOR Use of HPAM/VES Hybrid in High-Temperature and High-Salinity Oil Reservoirs |
| title_sort | laboratory study on the potential eor use of hpam ves hybrid in high temperature and high salinity oil reservoirs |
| url | http://dx.doi.org/10.1155/2013/927519 |
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