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Experimental Study on the Interplay between Different Brine Types/Concentrations and $CO_{2}$ Injectivity for Effective $CO_{2}$ Storage in Deep Saline Aquifers
| Content Provider | MDPI |
|---|---|
| Author | Edem, Donatus Ephraim Abba, Muhammad Kabir Nourian, Amir Babaie, Meisam Naeem, Zainab |
| Copyright Year | 2022 |
| Description | Salt precipitation during $CO_{2}$ storage in deep saline aquifers can have severe consequences on injectivity during carbon storage. Extensive studies have been carried out on $CO_{2}$ solubility with individual or mixed salt solutions; however, to the best of the authors’ knowledge, there is no substantial study to consider pressure decay rate as a function of $CO_{2}$ solubility in brine, and the range of brine concentration for effective $CO_{2}$ storage. This study presents an experimental core flooding of the Bentheimer sandstone sample under simulated reservoir conditions to examine the effect of four different types of brine at a various ranges of salt concentration (5 to 25 wt.%) on $CO_{2}$ storage. Results indicate that porosity and permeability reduction, as well as salt precipitation, is higher in divalent brines. It is also found that, at 10 to 20 wt.% brine concentrations in both monovalent and divalent brines, a substantial volume of $CO_{2}$ is sequestered, which indicates the optimum concentration ranges for storage purposes. Hence, the magnitude of $CO_{2}$ injectivity impairment depends on both the concentration and type of salt species. The findings from this study are directly relevant to $CO_{2}$ sequestration in deep saline aquifers as well as screening criteria for carbon storage with enhanced gas and oil recovery processes. |
| Starting Page | 986 |
| e-ISSN | 20711050 |
| DOI | 10.3390/su14020986 |
| Journal | Sustainability |
| Issue Number | 2 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-01-16 |
| Access Restriction | Open |
| Subject Keyword | Sustainability Petroleum Engineering Salt Precipitation Saline Aquifers Carbon Dioxide Storage Porosity Permeability |
| Content Type | Text |
| Resource Type | Article |
