Special Oil & Gas Reservoirs ›› 2025, Vol. 32 ›› Issue (6): 1-13.DOI: 10.3969/j.issn.1006-6535.2025.06.001

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Research progress on air-space-ground-well integrated monitoring technology for CO2 leakage in geological sequestration

SUN Yankun1,2, SUN Tianyu1,2, ZHU Tianyuan3, LONG Tao1,2, ZHOU Liangchang1,2, PENG Peng1,2   

  1. 1. Key Laboratory of Petroleum Exploration and Development Theory and Technology,Hubei Province,China University of GeosciencesWuhan,Wuhan,Hubei 430074,China;
    2. Key Laboratory of Tectonics and Petroleum Resources,Ministry of Education,China University of GeosciencesWuhan,Wuhan,Hubei 430074,China;
    3. PetroChina Daqing Oilfield Co. Ltd.,Daqing,Heilongjiang 163000,China
  • Received:2025-02-14 Revised:2025-09-10 Online:2025-12-25 Published:2025-12-31

Abstract: As a key component of CCUS technology,CO2 geological sequestration leakage risk isdirectly tied to storage and environmental safety.Systematic research on identifying multi-medium leakage pathways and coordinated monitoring technology is crucial to ensure the long-term reliability of carbon storage projects.Accordingly,based on potential leakage mechanisms in typical storage media(depleted oil/gas reservoirs,deep saline aquifers,deep coal seams) a systematic review was made concerning air-space-ground-well integrated monitoring technologies.On this basis,a multi-scale coordinated monitoring framework and a machine-learning-driven data synchronization analysis system were established,integrating airborne and satellite networking,multi-parameter surface data fusion,and three-dimensional subsurface well monitoring.The results indicated that the integrated air-space-ground-well monitoring system could achieve comprehensive multi-parameter detection and early warning of CO2 leakage;through multi-source data fusion and intelligent analysis,the accuracy and timeliness of CO2 leakage detection were greatly improved,providing tailored monitoring solutions for different geological storage conditions.This study presents a smart monitoring theoretical framework and technical approach for carbon sequestration aligned with carbon-neutrality goals,offering important scientific basis and technical support for the safe implementation and standardization of large-scale CCUS projects.

Key words: integrated air-space-ground-well monitoring, CO2 sequestration, carbon capture, CO2 monitoring, geological leakage, CCUS

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