Fault Tree Analysis Combined with Risk Matrix for CO2 Geological Storage Leakage Risk Assessment
Source abstract
Abstract
CO2 Geological Storage Leakage (CGSL) poses significant risks to environmental safety and the sustainability of Carbon Capture, Utilization, and Storage (CCUS) projects. While Fault Tree Analysis (FTA) and the Risk Matrix are established risk assessment tools, their combined application to CGSL remains underexplored, particularly in providing a structured, semi-quantitative framework for risk prioritization. This study addresses this gap by developing an integrated FTA-Risk Matrix methodology specifically tailored for CGSL. Firstly, an Analytic Hierarchy Process (AHP) was employed to establish and optimize a comprehensive risk assessment index system, resulting in 17 key indicators derived from expert questionnaires. Subsequently, a fault tree model for CGSL was constructed, identifying 14 basic risk events. By integrating the risk matrix, these factors were quantitatively assessed based on their probability and severity, enabling clear risk classification and the identification of critical vulnerable points. The practical application of this framework to the Jingbian CCUS project in the Ordos Basin demonstrates its efficacy, revealing legacy wells and fault activation as high-risk factors. This research provides a systematic and transferable tool for enterprises to conduct hierarchical risk management and offers a critical reference for enhancing the safety protocols of CCUS projects.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: CO2 Sequestration and Geologic Interactions · Geothermal Energy Systems and Applications · Risk and Safety Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 102206, China
SINOPEC Key Laboratory of Carbon Capture, Utilization and Storage, Beijing 102206, China
School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China
Funding
National Science and Technology Major Project of China · Open Fund of SINOPEC Key Laboratory of Carbon Capture, Utilization and Storage
References (41)
Show source-provided references
1. A multi-scale framework for CO2 capture, utilization, and sequestration: CCUS and CCU10.1016/j.compchemeng.2015.04.034 ↗
2. Advances in carbon capture, utilization and storage10.1016/j.apenergy.2020.115627 ↗
3. Technical Perspective of Carbon Capture, Utilization, and Storage10.1016/j.eng.2021.12.013 ↗
4. The development of Carbon Capture Utilization and Storage (CCUS) research in China: A bibliometric perspective10.1016/j.rser.2020.110521 ↗
5. Planning and scheduling of CO2 capture, utilization and storage (CCUS) operations as a strip packing problem10.1016/j.psep.2016.09.013 ↗
6. A strategic framework for commercialization of carbon capture, geological utilization, and storage technology in China10.1016/j.ijggc.2021.103420 ↗
7. International chains of CO2 capture, utilization and storage (CCUS) in a carbon-neutral world10.1016/j.resconrec.2021.105433 ↗
8. Carbon Capture, Utilization and Storage (CCUS)10.1016/j.apenergy.2018.11.019 ↗
9. Composite confining systems: Rethinking geologic seals for permanent CO2 sequestration10.1016/j.ijggc.2023.103908 ↗
10. Seismicity induced by geological CO2 storage: A review10.1016/j.earscirev.2023.104369 ↗
11. An Integrated Framework for Geothermal Energy Storage with CO2 Sequestration and Utilization10.1016/j.eng.2022.12.010 ↗
12. Progress and prospect of carbon dioxide capture, utilization and storage in CNPC oilfields10.1016/S1876-3804(22)60383-5 ↗
13. Risk evaluation of CO2 leakage through fracture zone in geological storage reservoir10.1016/j.fuel.2023.127896 ↗
14. Leakage Risk Evaluation Model for Single Wells of CO2: A case study
15. A novel risk evaluation method for fire and explosion accidents in oil depots using bow-tie analysis and risk matrix analysis method based on cloud model theory10.1016/j.ress.2021.107791 ↗
16. A consensus model-based risk matrix for human error factors risk analysis in medical devices by considering risk acceptability10.1016/j.ress.2023.109446 ↗
17. Safety evaluation of leak in a storage tank using fault tree analysis and risk matrix analysis10.1016/j.jlp.2021.104597 ↗
18. Fuzzy risk prediction of roof fall and rib spalling: Based on FFTA–DFCE and risk matrix methods10.1007/s11356-019-06972-4 ↗
19. Carbon dioxide storage schemes: Technology, assessment and deployment10.1016/j.jclepro.2016.06.199 ↗
20. Translating risk assessment to contingency planning for CO2 geologic storage: A methodological framework10.1016/j.ijggc.2016.05.017 ↗
21. Practical leakage risk assessment for CO2 assisted enhanced oil recovery and geologic storage in Ohio’s depleted oil fields10.1016/j.ijggc.2021.103338 ↗
22. A risk-based approach to evaluating the Area of Review and leakage risks at CO2 storage sites10.1016/j.ijggc.2019.102884 ↗
23. Leakage risk assessment of a CO2 storage site: A review10.1016/j.earscirev.2021.103849 ↗
24. An integrated geological and GIS-based method to assess caprock risk in mature basins proposed for carbon capture and storage10.1016/j.ijggc.2018.11.007 ↗
25. Measuring operational performance of OSH management system—A demonstration of AHP-based selection of leading key performance indicators10.1016/j.ssci.2014.11.018 ↗
26. Ministry of Environmental Protection of the People’s Republic of China (2016). Technical Guidelines for Environmental Risk Assessment of Carbon Dioxide Capture, Utilization and Storage (Trial), (In Chinese).
27. (2017). Carbon Dioxide Capture, Transportation and Geological Storage. Geological Storage (Standard No. ISO 27914: 2017).
28. Landslide risk assessment of high-mountain settlements using Gaussian process classification combined with improved weight-based generalized objective function10.1016/j.ijdrr.2021.102662 ↗
29. A comprehensive risk evaluation method for natural gas pipelines by combining a risk matrix with a bow-tie model10.1016/j.jngse.2015.04.029 ↗
30. Risk analysis for oil & gas pipelines: A sustainability assessment approach using fuzzy based bow-tie analysis10.1016/j.jlp.2011.12.007 ↗
31. Electrical conductivity structure of the crust and upper mantle in the northeastern margin of the Qinghai-Tibet plateau along the profile Maqen-Lanzhou-Jingbian
32. Geochemical characteristics and origin of dolomite: A case study from the middle assemblage of Ordovician Majiagou Formation Member 5 of the west of Jingbian Gas Field, Ordos Basin, North China10.1016/S1876-3804(14)60048-3 ↗
33. Yang, Z.G., Wang, A.G., Meng, P.Y., Chen, M., Guo, K., and Zhu, N. (2023). Combined use of in-reservoir geological records for oil-reservoir destruction identification: A case study in the Jingbian area (Ordos Basin, China). Front. Earth Sci., 11.10.3389/feart.2023.1133539 ↗
34. Identification and evaluation of well integrity and causes of failure of well integrity barriers (A review)10.1016/j.jngse.2017.05.009 ↗
35. Assessing the combined influence of fluid-rock interactions on reservoir properties and injectivity during CO2 storage in saline aquifers10.1016/j.energy.2018.05.024 ↗
36. Analysis of the effect of formation dip angle and injection pressure on the injectivity and migration of CO2 during storage10.1016/j.energy.2023.128021 ↗
37. Statistical analysis of incidents on onshore CO2 pipelines based on PHMSA database10.1016/j.jlp.2022.104799 ↗
38. Identification of potential CO2 leakage pathways and mechanisms in oil reservoirs using fault tree analysis10.1002/ghg.1959 ↗
39. Influence of supercritical CO2-H2O-caprock interactions on the sealing capability of deep coal seam caprocks related to CO2 geological storage: A case study of the silty mudstone caprock of coal seam no. 3 in the Qinshui Basin, China10.1016/j.ijggc.2021.103282 ↗
40. Risk assessment and management strategy of geologic carbon storage in multi-well site10.1016/j.psep.2024.10.097 ↗
41. The causes of risk in fuel supply chains and their role in energy security10.1016/j.jclepro.2021.129254 ↗