Co-Optimization of CO 2 Storage and Enhanced Gas Recovery Using Carbonated Water and Supercritical CO 2

Abdirizak Omar, Mouadh Addassi, Volker Vahrenkamp and Hussein Hoteit
Additional contact information
Abdirizak Omar: Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology, Thuwal, Jeddah 23955, Saudi Arabia
Mouadh Addassi: Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology, Thuwal, Jeddah 23955, Saudi Arabia
Volker Vahrenkamp: Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology, Thuwal, Jeddah 23955, Saudi Arabia
Hussein Hoteit: Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology, Thuwal, Jeddah 23955, Saudi Arabia

Energies, 2021, vol. 14, issue 22, 1-21

Abstract: CO 2 -based enhanced gas recovery (EGR) is an appealing method with the dual benefit of improving recovery from mature gas reservoirs and storing CO 2 in the subsurface, thereby reducing net emissions. However, CO 2 injection for EGR has the drawback of excessive mixing with the methane gas, therefore, reducing the quality of gas produced and leading to an early breakthrough of CO 2 . Although this issue has been identified as a major obstacle in CO 2 -based EGR, few strategies have been suggested to mitigate this problem. We propose a novel hybrid EGR method that involves the injection of a slug of carbonated water before beginning CO 2 injection. While still ensuring CO 2 storage, carbonated water hinders CO 2 -methane mixing and reduces CO 2 mobility, therefore delaying breakthrough. We use reservoir simulation to assess the feasibility and benefit of the proposed method. Through a structured design of experiments (DoE) framework, we perform sensitivity analysis, uncertainty assessment, and optimization to identify the ideal operation and transition conditions. Results show that the proposed method only requires a small amount of carbonated water injected up to 3% pore volumes. This EGR scheme is mainly influenced by the heterogeneity of the reservoir, slug volume injected, and production rates. Through Monte Carlo simulations, we demonstrate that high recovery factors and storage ratios can be achieved while keeping recycled CO 2 ratios low.

Keywords: CCUS; CO 2 storage; enhanced gas recovery; carbonated water; optimization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/22/7495/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/22/7495/ (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:jeners:v:14:y:2021:i:22:p:7495-:d:675601

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

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