All Issue

2025 Vol.26, Issue 7
Evaluation of the Pore Scale Carbon Dioxide Injection Efficiency Using PDMS Micromodel

PDMS 마이크로모델을 활용한 공극 규모 이산화탄소 주입 효율 평가

Seokgu Gang1
,
Jongwon Jung2*
강 석구1
,
정 종원2*
1Ph.D Student, Candidate, Department of Civil Engineering, Chungbuk National University
2Professor, Department of Civil Engineering, Chungbuk National University
*Corresponding Author
1 July 2025. pp. 5-11
PDF XML Citation
Abstract

Among the storage structures for underground carbon dioxide storage, the deep saline aquifer is evaluated as a promising structure based on its high storage capacity. The storage layer including the deep saline aquifer forms a pore network with numerous pores and pore trees distributed un-uniformly. As the need for evaluating carbon dioxide injection and storage efficiency by considering the pore network of the in-situ storage reservoir that is un-uniformly distributed increases, this study fabricates a micromodel based on the pore network information extracted from the micro X-ray CT image of the actual sandstone storage reservoir drilling core. In addition, the carbon dioxide injection efficiency is evaluated according to the surfactant (Glucopon 600 CSUP) and NaCl concentration of the pore water. As a result, the use of Glucopon 600 CSUP shows similar injection efficiency to the case of using deionized water even under the condition of the average NaCl concentration (0.599 M) of seawater. In addition, the injection efficiency of the PDMS micromodel in this study tends to be lower than that of the uniform pore network micromodel of the previous study under the condition of low carbon dioxide injection velocity. This trend is thought to be due to the heterogeneous pore structure of the PDMS micromodel and the utilization of gaseous carbon dioxide compared to previous studies (supercritical state).

Keywords
Carbon dioxide
Geological sequestration
PDMS
Micromodel
Surfactant

지중 이산화탄소 저장을 위한 저장층 구조 중 해저 염수층은 높은 저장 용량에 기반하여 유망한 구조로 평가된다. 해저 염수층을 포함하는 저장층은 수많은 공극과 공극목이 불균일하게 분포하는 공극 네트워크를 형성하고 있다. 불균일하게 분포하는 현장 저장층의 공극 네트워크를 고려하여 이산화탄소의 주입 및 저장 효율 평가에 대한 필요성이 증가함에 따라 본 연구에서는 실제 저장층 시추 코어의 micro X-ray CT 이미지로부터 추출된 공극 네트워크 정보를 기반으로 마이크로모델을 제작한다. 또한, 공극수의 계면활성제(Glucopon 600 CSUP) 및 NaCl 농도에 따른 이산화탄소 주입 효율 평가를 수행한다. 그 결과, Glucopon 600 CSUP의 활용은 해수의 평균 NaCl 농도(3.5wt%(0.599M)) 조건에서도 탈이온수를 활용한 경우와 유사한 주입 효율을 나타낸다. 또한, 낮은 이산화탄소 주입 속도 조건에서 본 연구의 PDMS 마이크로모델 활용 시 주입 효율은 선행 연구의 균일 공극 마이크로모델에서보다 낮은 경향을 나타낸다. 이러한 경향은 PDMS 마이크로모델의 불균일 공극 구조 및 선행 연구(초임계 상태)와 비교하여 기체 상태 이산화탄소 활용에 따른 것으로 판단된다. 또한, Glucopon 600 CSUP는 3.5wt%의 NaCl 노출 조건에서도 탈이온수를 활용한 경우와 유사한 주입 효율을 나타낸다.

키워드
이산화탄소
지중 저장
PDMS
마이크로모델
계면활성제
References
1

Cao, S. C., Dai, S. and Jung, J. (2016), Supercritical CO2 and brine displacement in geological carbon sequestration: Micromodel and pore network simulation studies, International Journal of Greenhouse Gas Control, 44, 104~114.

10.1016/j.ijggc.2015.11.026
2

De, N., Singh, N., Fulcrand, R., Méheust, Y., Meunier, P. and Nadal, F. (2022), Two-dimensional micromodels for studying the convective dissolution of carbon dioxide in 2D water-saturated porous media, Lab on a Chip, 22(23), 4645~4655.

10.1039/D2LC00540A36341945
3

Derkani, M. H., Fletcher, A. J., Abdallah, W., Sauerer, B., Anderson, J. and Zhang, Z. J. (2018), Low salinity waterflooding in carbonate reservoirs: Review of interfacial mechanisms, Colloids and Interfaces, 2(2), 20.

10.3390/colloids2020020
4

Espinoza, D. N., Kim, S. H. and Santamarina, J. C. (2011), CO2 geological storage-Geotechnical implications, KSCE Journal of Civil Engineering, 15(4), 707~719.

10.1007/s12205-011-0011-9
5

Furre, A. K., Eiken, O., Alnes, H., Vevatne, J. N. and Kiær, A. F. (2017), 20 years of monitoring CO2-injection at Sleipner, Energy procedia, 114, 3916~3926.

10.1016/j.egypro.2017.03.1523
6

Gale, J. (2004), Geological storage of CO2: What do we know, where are the gaps and what more needs to be done?, Energy, 29(9-10), 1329~1338.

10.1016/j.energy.2004.03.068
7

Gang, S., Jeon, M. K., Ryou, J. E., Lee, J. Y. and Jung, J. (2025), Reduction of water-scCO2 capillary factor using surfactants and evaluation of injection efficiency considering injection conditions in deep aquifers, Fuel, 393, 134857.

10.1016/j.fuel.2025.134857
8

Gang, S., Ryou, J. E., Lee, J. Y. and Jung, J. (2024), Enhancement of carbon dioxide storage efficiency using anionic surfactants, Fuel, 358, 129998.

10.1016/j.fuel.2023.129998
9

Global CCS Institute (2023), The Global Status of CCS: 2023, Australia.

10

Government of Alberta (2023), Quest Carbon Capture and Storage Project: annual summary report-Alberta Department of Energy: 2022, Energy and Minerals.

11

Joewondo, N., Garbin, V. and Pini, R. (2021), Direct imaging of bubble ripening in two-dimensional porous media micromodels, In Proceedings of the 15th Greenhouse Gas Control Technologies Conference

10.2139/ssrn.3820624
12

Kaldi, J., Daniel, R., Tenthorey, E., Michael, K., Schacht, U., Nicol, A. ... and Backe, G. (2013), Containment of CO2 in CCS: Role of Caprocks and Faults, Energy Procedia, 37, 5403~5410.

10.1016/j.egypro.2013.06.458
13

Karadimitriou, N. K., Musterd, M., Kleingeld, P. J., Kreutzer, M. T., Hassanizadeh, S. M. and Joekar‐Niasar, V. (2013), On the fabrication of PDMS micromodels by rapid prototyping, and their use in two‐phase flow studies, Water Resources Research, 49(4), 2056~2067.

10.1002/wrcr.20196
14

Kim, S. and Santamarina, J. C. (2014), Engineered CO2 injection: The use of surfactants for enhanced sweep efficiency, International Journal of Greenhouse Gas Control, 20, 324~332.

10.1016/j.ijggc.2013.11.018
15

.Lv, M., Liu, Z., Ji, C., Jia, L. and Jiang, Y. (2018), Investigation of pore-scale behaviors of foam flow in a polydimethylsiloxane micromodel, Industrial & Engineering Chemistry Research, 57(44), 15172~15180.

10.1021/acs.iecr.8b03366
16

Majlaton, N. I. (2012), A Visual Study of CO2 Injectionat the Pore Scale using Micromodels.

17

Mansouri-Boroujeni, M. (2022), A microfluidic study of the physical and chemical mechanisms induced by CO2 injection in deep saline aquifers (Doctoral dissertation, Université d'Orléans).

18

Murakami, T., Kuroda, S. I. and Osawa, Z. (1998), Dynamics of polymeric solid surfaces treated with oxygen plasma: Effect of aging media after plasma treatment, Journal of colloid and interface science, 202(1), 37~44.

10.1006/jcis.1997.5386
19

Negin, C., Ali, S. and Xie, Q. (2017), Most common surfactants employed in chemical enhanced oil recovery, Petroleum, 3(2), 197~211.

10.1016/j.petlm.2016.11.007
20

Ryou, J. E., Gang, S., Lee, J. Y. and Jung, J. (2025), Assessing surfactant influence on CO2 injection efficiency in geological storage: A pore network approach, Fuel, 381, 133598.

10.1016/j.fuel.2024.133598
21

Song, Y., Zhao, C., Chen, M., Chi, Y., Zhang, Y. and Zhao, J. (2020), Pore-scale visualization study on CO2 displacement of brine in micromodels with circular and square cross sections, International Journal of Greenhouse Gas Control, 95, 102958.

10.1016/j.ijggc.2020.102958
22

Zhang, C., Oostrom, M., Grate, J. W., Wietsma, T. W. and Warner, M. G. (2011), Liquid CO2 displacement of water in a dual-permeability pore network micromodel, Environmental science & technology, 45(17), 7581~7588.

10.1021/es201858r21774502
23

Zheng, X., Mahabadi, N., Yun, T. S. and Jang, J. (2017), Effect of capillary and viscous force on CO2 saturation and invasion pattern in the microfluidic chip, Journal of Geophysical Research: Solid Earth, 122(3), 1634~1647.

10.1002/2016JB013908
Information
  • Publisher :Korean Geo-Environmental Society
  • Publisher(Ko) :한국지반환경공학회
  • Journal Title :Journal of the Korean Geo-Environmental Society
  • Journal Title(Ko) :한국지반환경공학회 논문집
  • Volume : 26
  • No :7
  • Pages :5-11
  • Received Date : 2025-04-28
  • Revised Date : 2025-05-14
  • Accepted Date : 2025-06-09
  • DOI :https://doi.org/10.14481/jkges.2025.26.7.5
Journal Informaiton Journal of the Korean Geo-Environmental Society Journal of the Korean Geo-Environmental Society
Online Submission
  • NRF
  • KOFST
  • KISTI Current Status
  • KISTI Cited-by
  • orcid
Journal Informaiton Journal Informaiton - close