首页|Sensitivity of Marine Controllable Source Electromagnetic Soundings for Identifying Plume Migration in Offshore CO2 Storage
Sensitivity of Marine Controllable Source Electromagnetic Soundings for Identifying Plume Migration in Offshore CO2 Storage
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Offshore carbon dioxide(CO2)storage is an effective method for reducing greenhouse gas emissions.However,when using traditional seismic wave methods to monitor the migration of sequestration CO2 plumes,the characteristics of wave velocity changes tend to become insignificant beyond a certain limit.In contrast,the controllable source electromagnetic method(CSEM)remains highly sensitive to resistivity changes.By simulating different CO2 plume migration conditions,we established the relevant models and calculated the corresponding electric field response characteristic curves,allowing us to analyze the CSEM's ability to monitor CO2 plumes.We considered potential scenarios for the migration and diffusion of offshore CO2 storage,including various burial depths,vertical extension diffusion,lateral extension diffusion,multiple combinations of lateral intervals,and electric field components.We also obtained differences in resistivity inversion imaging obtained by CSEM to evaluate its feasibility in monitoring and to analyze all the electric field(Ex,E,and Ez)response characteristics.CSEM has great potential in monitoring CO2 plume migration in offshore saltwater reservoirs due to its high sensitivity and accuracy.Furthermore,changes in electromagnetic field response reflect the transport status of CO2 plumes,providing an important basis for monitoring and evaluating CO2 transport behavior during storage processes.
Ning Qiu、Chunwu Pan、Yongheng Zhang、Bin Liu、Zhen Sun、Pengchun Li
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Key Laboratory of Ocean and Marginal Sea Geology,South China Sea Institute of Oceanology,Sanya Institute of Ocean Eco-Environmental Engineering,Key Laboratory of Tropical Oceanography,Chinese Academy of Sciences,Guangzhou 511458,China
Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou),Guangzhou 511458,China
University of Chinese Academy of Sciences,Beijing 100049,China
Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong LaboratorySanya Technology Innovation Special Project
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