Analysis of Caprock Mechanical Stability for CO2 Geological Storage Based on the Fuzzy Analytic Hierarchy Process DOI Creative Commons
Xu Guo, Chuanxiang Zhang, Yana Wei

et al.

Journal of Progress in Civil Engineering, Journal Year: 2024, Volume and Issue: 6(12), P. 25 - 29

Published: Dec. 26, 2024

Carbon dioxide geological sequestration (CCS) technology is a key measure for addressing climate change, and its safety heavily depends on the mechanical stability of caprock in storage formation. This paper develops comprehensive evaluation system based Fuzzy Analytic Hierarchy Process (FAHP) to assess after CO2 injection into saline aquifers. Compared other quantitative methods, FAHP more effective at handling fuzziness uncertainty inherent process. By utilizing fuzzy judgment matrix, it accurately reflects relative importance various factors, thus enhancing scientific rigor reliability results. To validate effectiveness this system, an engineering case study was conducted using data from Jilin Oilfield. The results indicate that Fourth Member Sifangtai Formation Oilfield, as evaluated by model, exhibits high across multiple indicators, possesses strong capacity terms thickness, compressive strength, shear low permeability. result classified "Good, " meeting requirements sequestration. demonstrates advantages assessing caprocks complex environments provides tool technical support projects Oilfield similar regions. In future, integrating actual monitoring further optimize will provide accurate decision-making long-term prediction risk management

Language: Английский

Comprehensive Characterization and Impact Analysis of Interlayers on CO2 Flooding in Low-Permeability Sandstone Reservoirs DOI Creative Commons

Taskyn Abitkazy,

Yan Lin, Khaled Albriki

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(3), P. 593 - 593

Published: Jan. 27, 2025

In low-permeability sandstone reservoirs (LPSR), impermeable interlayers significantly challenge carbon capture, utilization, and storage (CCUS) enhance oil recovery (CO2-EOR) processes by creating complex, discontinuous flow units. This study aims to address these challenges through a comprehensive multi-faceted approach integrating geological microscopic analyses, including core analysis, reservoir petrography, field emission-scanning electron microscopy (FE-SEM), energy dispersive spectroscopy (EDS), well-logging response utilizing three-dimensional (3D) modeling. The current investigation systematically characterizes interlayer types, petrophysical properties, thickness, connectivity, their spatial distribution in the unit. Numerical simulations were conducted assess sealing efficiency impact of various materials on CO2 flooding over 10-year period. Results indicate presence argillaceous interlayers, with optimal occurring barriers ≥ 4 m 1.5 thick. leakage occurs preferential pathways that emerge side-to-middle bottom-to-top direction interbeds, multidirectional showing greater at bottom compared upper side within barriers. Increased thickness constraints breakthrough but reduces vertical area production ratio homogeneous reservoirs. Augmented interbed mitigate time while constraining gravity override dispersion effects, enhancing horizontal displacement. These novel findings provide crucial insights for optimizing CCUS-EOR strategies LPSR, offering robust theoretical foundation future applications serving as key reference utilization challenging settings LPSR worldwide.

Language: Английский

Citations

0
Insights on the fracture behavior of mudstone subjected to water and liquid CO2 fracturing DOI
Dongdong Ma, Xunjian Hu, Xiao Ma

et al.

Geoenergy Science and Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 213721 - 213721

Published: Jan. 1, 2025

Language: Английский

Citations

0
Risk Assessment of Fault Activation Using an Equivalent Continuum Method During Geological CO2 Storage in a Fractured Reservoir DOI
Enyi Yu,

Xiaopeng Cao,

Shilong Liu

et al.

SPE Reservoir Simulation Conference, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

Abstract The stability of faults must be evaluated carefully for reliable and successful geological CO2 storage (GCS) projects, especially in reservoirs with abundant fractures faults. induced slip reactivation fractured can create significant leakage pathways. Therefore, investigating the geomechanical response on through hydromechanical coupled simulations is crucial but challenging. It requires constructing fine computational grids that conform to faults, which arduous 3D field-scale settings. This study aims develop a numerical method does not require finely gridding near equivalent continuum (ECM) adopted efficiently model interactions assess risk fault activation during GCS reservoirs. In this work, we described simulation framework faulted natural formations. constitutive relations are rigorously derived from stressstrain analysis, permeability calculated based seepage resistance method. A hybrid discretization used solve geomechanical-flow system flow discretized using finite volume method, by element We established reservoir crossed tectonic investigated spatial convergence compared its accuracy an extremely mesh. analyzed influence damage zone properties both mesh size requirements tendency ECM. finally simulated case several GEOS simulator investigate Mohr-Coulomb criterion. Numerical have demonstrated practical applicability proposed approach modeling geomechanics GCS. mechanical zone, particularly Young's modulus Poisson's ratio, only optimal selection ECM implementation also significantly affect assessment. According allocation relationship between regional seal vertical extension roughly divided into embedded, lower-broken, broken-through modes. Among these, mode presents highest special attention. work introduces simulate field scale, eliminating need fractures. Furthermore, it provides perspective analysis case.

Language: Английский

Citations

0
Integrated modeling of thermal decarbonation and three-dimensional poroelastic fluid behavior: Assessment of stored CO2 leakage along carbonate fault DOI

Chan‐Hee Jang,

Byung‐Dal So, Kyeong‐Min Lee

et al.

Engineering Geology, Journal Year: 2025, Volume and Issue: unknown, P. 108065 - 108065

Published: April 1, 2025

Language: Английский

Citations

0
Experimental and thermodynamic analysis of the carbonation of geopolymer under geologic CO2 sequestration conditions DOI
Zhen Zhang, Yuhuan Bu, Shenglai Guo

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(4)

Published: April 1, 2025

The integrity of wellbore sealing is vital for carbon dioxide sequestration. carbonation metakaolin-based geopolymer under conditions 50 °C and 10 MPa was experimentally studied. Furthermore, thermodynamic simulation utilized to analyze the geopolymer. experimental results show that unreacted raw materials granular precursors remain after hydration After 28 days corrosion, a substantial quantity sodium aluminosilicate hydrate gel produced; however, macro-cracks develop on surface sample, resulting in decrease strength. Thermodynamic revealed dawsonite, Clinoptilolite-(K), Heulandite-(Ca) excellent resistance corrosion. Moreover, an increase temperature enhances mineral phases carbonation. However, higher concentration aqueous solution accelerates rate In presence ions sulfate solution, Chabazite-(Na) Stilbite-(K) consume more during leading increased dawsonite formation. Low-calcium are suitable developing corrosion-resistant cementing slurry system.

Language: Английский

Citations

0
Caprock sealing for geologic CO2 storage: Research advances, challenges and prospects DOI Creative Commons
Bowen Chen, Qi Li, Yongsheng Tan

et al.

Journal of Rock Mechanics and Geotechnical Engineering, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

Citations

0
Hydro-mechanical interactions in CO2 storage: Critical parameters influencing coal mine at Shenhua's CCS site DOI Creative Commons

K.H. Lin,

Ning Wei, Yao Zhang

et al.

Engineering Geology, Journal Year: 2025, Volume and Issue: unknown, P. 108087 - 108087

Published: April 1, 2025

Language: Английский

Citations

0
Assessment of MgO and captured CO2 in deep mixing applications: electrical properties and environmental impacts DOI Creative Commons
Yizhao Liu, Songyu Liu, Guangyin Du

et al.

Case Studies in Construction Materials, Journal Year: 2025, Volume and Issue: unknown, P. e04707 - e04707

Published: April 1, 2025

Language: Английский

Citations

0
Influence of pore heterogeneity of shale with different lithofacies on CO2 storage: Experiments and molecular dynamics simulation DOI
Kanyuan Shi,

Sijia Zhang,

Junqing Chen

et al.

Engineering Geology, Journal Year: 2025, Volume and Issue: unknown, P. 108107 - 108107

Published: May 1, 2025

Language: Английский

Citations

0
Analysis of Caprock Mechanical Stability for CO2 Geological Storage Based on the Fuzzy Analytic Hierarchy Process DOI Creative Commons
Xu Guo, Chuanxiang Zhang, Yana Wei

et al.

Journal of Progress in Civil Engineering, Journal Year: 2024, Volume and Issue: 6(12), P. 25 - 29

Published: Dec. 26, 2024

Carbon dioxide geological sequestration (CCS) technology is a key measure for addressing climate change, and its safety heavily depends on the mechanical stability of caprock in storage formation. This paper develops comprehensive evaluation system based Fuzzy Analytic Hierarchy Process (FAHP) to assess after CO2 injection into saline aquifers. Compared other quantitative methods, FAHP more effective at handling fuzziness uncertainty inherent process. By utilizing fuzzy judgment matrix, it accurately reflects relative importance various factors, thus enhancing scientific rigor reliability results. To validate effectiveness this system, an engineering case study was conducted using data from Jilin Oilfield. The results indicate that Fourth Member Sifangtai Formation Oilfield, as evaluated by model, exhibits high across multiple indicators, possesses strong capacity terms thickness, compressive strength, shear low permeability. result classified "Good, " meeting requirements sequestration. demonstrates advantages assessing caprocks complex environments provides tool technical support projects Oilfield similar regions. In future, integrating actual monitoring further optimize will provide accurate decision-making long-term prediction risk management

Language: Английский

Citations

0