Expansion of Geological CO 2 Storage Capacity in a Closed Aquifer by Simultaneous Brine Production with CO 2 Injection

Seungpil Jung ()
Additional contact information
Seungpil Jung: SK Earthon Co., Ltd., Seoul 03188, Republic of Korea

Sustainability, 2023, vol. 15, issue 4, 1-17

Abstract: Structural trapping is the primary mechanism for intensive CO 2 sequestration in saline aquifers. This is the foundation for increasing global CO 2 storage; gradual switch to preferable trapping mechanisms, such as residual saturation, dissolution, and mineral trapping, will require a long-time scale. The major constraints limiting the storage capacity of structural trapping are formation pressure and structure size. Over-pressure owing to CO 2 injection causes a disruption of seal integrity indicating a failure in geological sequestration. The other constraint on storage capacity is a spill point determining geological storage volume. Overflowing CO 2 , after filling the storage volume, migrates upward along the aquifer geometry with buoyancy. This study proposes a methodology to maximize CO 2 storage capacity of a geological site with a substructure created by an interbedded calcareous layer below spill point. This study provides various conceptual schemes, i.e., no brine production, simultaneous brine production and pre-injection brine production, for geological CO 2 storage. By the comparative analysis, location of brine producer, production rate, and distance between injector and producer are optimized. Therefore, the proposed scheme can enhance CO 2 storage capacity by 68% beyond the pressure and migration limits by steering CO 2 plume and managing formation pressure.

Keywords: pressure-limited capacity; migration-limited capacity; brine production; interbedded impermeable layer; spill point (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/15/4/3499/pdf (application/pdf)
https://www.mdpi.com/2071-1050/15/4/3499/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2023:i:4:p:3499-:d:1068479

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().