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Effects of Charged Solute-Solvent Interaction on Reservoir Temperature during Subsurface $CO_{2}$ Injection
| Content Provider | MDPI |
|---|---|
| Author | Paolini, Christopher |
| Copyright Year | 2022 |
| Description | A short-term side-effect of $CO_{2}$ injection is a developing low-pH front that forms ahead of the bulk water injectant, due to differences in solute diffusivity. Observations of downhole well temperature show a reduction in aqueous-phase temperature with the arrival of a low-pH front, followed by a gradual rise in temperature upon the arrival of a high concentration of bicarbonate ion. In this work, we model aqueous-phase transient heat advection and diffusion, with the volumetric energy generation rate computed from solute-solvent interaction using the Helgeson–Kirkham–Flowers (HKF) model, which is based on the Born Solvation model, for computing specific molar heat capacity and the enthalpy of charged electrolytes. A computed injectant water temperature profile is shown to agree with the actual bottom hole sampled temperature acquired from sensors. The modeling of aqueous-phase temperature during subsurface injection simulation is important for the accurate modeling of mineral dissolution and precipitation because forward dissolution rates are governed by a temperature-dependent Arrhenius model. |
| Starting Page | 752 |
| e-ISSN | 2075163X |
| DOI | 10.3390/min12060752 |
| Journal | Minerals |
| Issue Number | 6 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-06-14 |
| Access Restriction | Open |
| Subject Keyword | Minerals Petroleum Engineering Co2 Carbon Sequestration Aqueous Thermodynamics Helgeson–kirkham–flowers (hkf) Model |
| Content Type | Text |
| Resource Type | Article |
