Influence of Permeability and Injection Orientation Variations on Dispersion Coefficient during Enhanced Gas Recovery by CO2 Injection
| Autor: | AJ Abbas, Martin Burby, Ghasem G. Nasr, Athari Al-Otaibi, MK Abba |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Control and Optimization
Materials science 020209 energy Energy Engineering and Power Technology Core sample 02 engineering and technology Dispersion coefficient lcsh:Technology Vertical orientation 020401 chemical engineering supercritical CO2 0202 electrical engineering electronic engineering information engineering enhanced gas recovery longitudinal dispersion coefficient injection orientation CO2 permeability 0204 chemical engineering Electrical and Electronic Engineering Composite material Engineering (miscellaneous) lcsh:T Renewable Energy Sustainability and the Environment Petrophysics Horizontal orientation Plume Permeability (earth sciences) Porous medium Energy (miscellaneous) |
| Zdroj: | Energies; Volume 12; Issue 12; Pages: 2328 Energies, Vol 12, Iss 12, p 2328 (2019) |
| ISSN: | 1996-1073 |
| DOI: | 10.3390/en12122328 |
| Popis: | This investigation was carried out to highlight the influence of the variation of permeability of the porous media with respect to the injection orientations during enhanced gas recovery (EGR) by CO2 injection using different core samples of different petrophysical properties. The laboratory investigation was performed using core flooding technique at 1300 psig and 50 °C. The injection rates were expressed in terms of the interstitial velocities to give an indication of its magnitude and variation based on the petrophysical properties of each core sample tested. Bandera Grey, Grey Berea, and Buff Berea sandstone core samples were used with measured permeabilities of 16.08, 217.04, and 560.63 md, respectively. The dispersion coefficient was observed to increase with a decrease in permeability, with Bandera Grey having the highest dispersion coefficient and invariably higher mixing between the injected CO2 and the nascent CH4. Furthermore, this dispersion was more pronounced in the horizontal injection orientation compared to the vertical orientation with, again, the lowest permeability having a higher dispersion coefficient in the horizontal orientation by about 50%. This study highlights the importance of the permeability variation in the design of the injection strategy of EGR and provides a revision of the CO2 plume propagation at reservoir conditions during injection. |
| Databáze: | OpenAIRE |
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