Electrostatic Origins of CO2-Increased Hydrophilicity in Carbonate Reservoirs
Injecting CO2 into oil reservoirs appears to be cost-effective and environmentally friendly due to decreasing the use of chemicals and cutting back on the greenhouse gas emission released. However, there is a pressing need for new algorithms to characterize oil/brine/rock system wettability, thus be...
| Main Authors: | , , , , , |
|---|---|
| Format: | Journal Article |
| Published: |
Nature Publishing Group
2018
|
| Online Access: | http://hdl.handle.net/20.500.11937/74852 |
| _version_ | 1848763390307074048 |
|---|---|
| author | Chen, Y. Sari, A. Xie, Sam Brady, P. Hossain, Mofazzal Saeedi, Ali |
| author_facet | Chen, Y. Sari, A. Xie, Sam Brady, P. Hossain, Mofazzal Saeedi, Ali |
| author_sort | Chen, Y. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Injecting CO2 into oil reservoirs appears to be cost-effective and environmentally friendly due to decreasing the use of chemicals and cutting back on the greenhouse gas emission released. However, there is a pressing need for new algorithms to characterize oil/brine/rock system wettability, thus better predict and manage CO2 geological storage and enhanced oil recovery in oil reservoirs. We coupled surface complexation/CO2 and calcite dissolution model, and accurately predicted measured oil-on-calcite contact angles in NaCl and CaCl2 solutions with and without CO2. Contact angles decreased in carbonated water indicating increased hydrophilicity under carbonation. Lowered salinity increased hydrophilicity as did Ca2+. Hydrophilicity correlates with independently calculated oil-calcite electrostatic bridging. The link between the two may be used to better implement CO2 EOR in fields. |
| first_indexed | 2025-11-14T11:02:42Z |
| format | Journal Article |
| id | curtin-20.500.11937-74852 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T11:02:42Z |
| publishDate | 2018 |
| publisher | Nature Publishing Group |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-748522019-05-02T02:27:35Z Electrostatic Origins of CO2-Increased Hydrophilicity in Carbonate Reservoirs Chen, Y. Sari, A. Xie, Sam Brady, P. Hossain, Mofazzal Saeedi, Ali Injecting CO2 into oil reservoirs appears to be cost-effective and environmentally friendly due to decreasing the use of chemicals and cutting back on the greenhouse gas emission released. However, there is a pressing need for new algorithms to characterize oil/brine/rock system wettability, thus better predict and manage CO2 geological storage and enhanced oil recovery in oil reservoirs. We coupled surface complexation/CO2 and calcite dissolution model, and accurately predicted measured oil-on-calcite contact angles in NaCl and CaCl2 solutions with and without CO2. Contact angles decreased in carbonated water indicating increased hydrophilicity under carbonation. Lowered salinity increased hydrophilicity as did Ca2+. Hydrophilicity correlates with independently calculated oil-calcite electrostatic bridging. The link between the two may be used to better implement CO2 EOR in fields. 2018 Journal Article http://hdl.handle.net/20.500.11937/74852 10.1038/s41598-018-35878-3 http://creativecommons.org/licenses/by/4.0/ Nature Publishing Group fulltext |
| spellingShingle | Chen, Y. Sari, A. Xie, Sam Brady, P. Hossain, Mofazzal Saeedi, Ali Electrostatic Origins of CO2-Increased Hydrophilicity in Carbonate Reservoirs |
| title | Electrostatic Origins of CO2-Increased Hydrophilicity in Carbonate Reservoirs |
| title_full | Electrostatic Origins of CO2-Increased Hydrophilicity in Carbonate Reservoirs |
| title_fullStr | Electrostatic Origins of CO2-Increased Hydrophilicity in Carbonate Reservoirs |
| title_full_unstemmed | Electrostatic Origins of CO2-Increased Hydrophilicity in Carbonate Reservoirs |
| title_short | Electrostatic Origins of CO2-Increased Hydrophilicity in Carbonate Reservoirs |
| title_sort | electrostatic origins of co2-increased hydrophilicity in carbonate reservoirs |
| url | http://hdl.handle.net/20.500.11937/74852 |