Aqueous Hybrids of Silica Nanoparticles and Hydrophobically Associating Hydrolyzed Polyacrylamide Used for EOR in High-Temperature and High-Salinity Reservoirs
Water-soluble polymers are known to be used in chemically enhanced oil recovery (EOR) processes, but their applications are limited in high-temperature and high-salinity oil reservoirs because of their inherent poor salt tolerance and weak thermal stability. Hydrophobic association of partially hyd...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2014-06-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1996-1073/7/6/3858 |
| _version_ | 1811301735915847680 |
|---|---|
| author | Dingwei Zhu Limin Wei Biqing Wang Yujun Feng |
| author_facet | Dingwei Zhu Limin Wei Biqing Wang Yujun Feng |
| author_sort | Dingwei Zhu |
| collection | DOAJ |
| description | Water-soluble polymers are known to be used in chemically enhanced oil recovery (EOR) processes, but their applications are limited in high-temperature and high-salinity oil reservoirs because of their inherent poor salt tolerance and weak thermal stability. Hydrophobic association of partially hydrolyzed polyacryamide (HAHPAM) complexed with silica nanoparticles to prepare nano-hybrids is reported in this work. The rheological and enhanced oil recovery (EOR) properties of such hybrids were studied in comparison with HAHPAM under simulated high-temperature and high-salinity oil reservoir conditions (T: 85 °C; total dissolved solids: 32,868 mg∙L−1; [Ca2+] + [Mg2+]: 873 mg∙L−1). It was found that the apparent viscosity and elastic modulus of HAHPAM solutions increased with addition of silica nanoparticles, and HAHPAM/silica hybrids exhibit better shear resistance and long-term thermal stability than HAHPAM in synthetic brine. Moreover, core flooding tests show that HAHPAM/silica hybrid has a higher oil recovery factor than HAHPAM solution. |
| first_indexed | 2024-04-13T07:14:16Z |
| format | Article |
| id | doaj.art-229b90640bf34cf8963dda7606683413 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-13T07:14:16Z |
| publishDate | 2014-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-229b90640bf34cf8963dda76066834132022-12-22T02:56:47ZengMDPI AGEnergies1996-10732014-06-01763858387110.3390/en7063858en7063858Aqueous Hybrids of Silica Nanoparticles and Hydrophobically Associating Hydrolyzed Polyacrylamide Used for EOR in High-Temperature and High-Salinity ReservoirsDingwei Zhu0Limin Wei1Biqing Wang2Yujun Feng3Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, ChinaChengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, ChinaChengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, ChinaChengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, ChinaWater-soluble polymers are known to be used in chemically enhanced oil recovery (EOR) processes, but their applications are limited in high-temperature and high-salinity oil reservoirs because of their inherent poor salt tolerance and weak thermal stability. Hydrophobic association of partially hydrolyzed polyacryamide (HAHPAM) complexed with silica nanoparticles to prepare nano-hybrids is reported in this work. The rheological and enhanced oil recovery (EOR) properties of such hybrids were studied in comparison with HAHPAM under simulated high-temperature and high-salinity oil reservoir conditions (T: 85 °C; total dissolved solids: 32,868 mg∙L−1; [Ca2+] + [Mg2+]: 873 mg∙L−1). It was found that the apparent viscosity and elastic modulus of HAHPAM solutions increased with addition of silica nanoparticles, and HAHPAM/silica hybrids exhibit better shear resistance and long-term thermal stability than HAHPAM in synthetic brine. Moreover, core flooding tests show that HAHPAM/silica hybrid has a higher oil recovery factor than HAHPAM solution.http://www.mdpi.com/1996-1073/7/6/3858silica nanoparticleshydrophobically associating polyacrylamiderheological propertiesenhanced oil recovery |
| spellingShingle | Dingwei Zhu Limin Wei Biqing Wang Yujun Feng Aqueous Hybrids of Silica Nanoparticles and Hydrophobically Associating Hydrolyzed Polyacrylamide Used for EOR in High-Temperature and High-Salinity Reservoirs Energies silica nanoparticles hydrophobically associating polyacrylamide rheological properties enhanced oil recovery |
| title | Aqueous Hybrids of Silica Nanoparticles and Hydrophobically Associating Hydrolyzed Polyacrylamide Used for EOR in High-Temperature and High-Salinity Reservoirs |
| title_full | Aqueous Hybrids of Silica Nanoparticles and Hydrophobically Associating Hydrolyzed Polyacrylamide Used for EOR in High-Temperature and High-Salinity Reservoirs |
| title_fullStr | Aqueous Hybrids of Silica Nanoparticles and Hydrophobically Associating Hydrolyzed Polyacrylamide Used for EOR in High-Temperature and High-Salinity Reservoirs |
| title_full_unstemmed | Aqueous Hybrids of Silica Nanoparticles and Hydrophobically Associating Hydrolyzed Polyacrylamide Used for EOR in High-Temperature and High-Salinity Reservoirs |
| title_short | Aqueous Hybrids of Silica Nanoparticles and Hydrophobically Associating Hydrolyzed Polyacrylamide Used for EOR in High-Temperature and High-Salinity Reservoirs |
| title_sort | aqueous hybrids of silica nanoparticles and hydrophobically associating hydrolyzed polyacrylamide used for eor in high temperature and high salinity reservoirs |
| topic | silica nanoparticles hydrophobically associating polyacrylamide rheological properties enhanced oil recovery |
| url | http://www.mdpi.com/1996-1073/7/6/3858 |
| work_keys_str_mv | AT dingweizhu aqueoushybridsofsilicananoparticlesandhydrophobicallyassociatinghydrolyzedpolyacrylamideusedforeorinhightemperatureandhighsalinityreservoirs AT liminwei aqueoushybridsofsilicananoparticlesandhydrophobicallyassociatinghydrolyzedpolyacrylamideusedforeorinhightemperatureandhighsalinityreservoirs AT biqingwang aqueoushybridsofsilicananoparticlesandhydrophobicallyassociatinghydrolyzedpolyacrylamideusedforeorinhightemperatureandhighsalinityreservoirs AT yujunfeng aqueoushybridsofsilicananoparticlesandhydrophobicallyassociatinghydrolyzedpolyacrylamideusedforeorinhightemperatureandhighsalinityreservoirs |