Geophysical Monitoring Technologies for the Entire Life Cycle of CO2 Geological Sequestration

被引:0
|
作者
Li, Chenyang [1 ,2 ,3 ,4 ]
Zhang, Xiaoli [1 ,2 ,3 ,4 ]
机构
[1] Northwest Univ, Dept Geol, Xian 710069, Peoples R China
[2] Northwest Univ, Sch Carbon Neutral, Xian 710069, Peoples R China
[3] Natl Local Joint Engn Res Ctr Carbon Capture & Sto, Xian 710069, Peoples R China
[4] Shaanxi Prov Key Lab Carbon Neutral Technol, Xian 710069, Peoples R China
关键词
CO2 geological sequestration; geophysical techniques; rock physics; logging; fiber optics; machine learning algorithms; WELL INTEGRITY; DISSOLUTION RATES; BASALTIC GLASS; INJECTION; STORAGE; CEMENT; MIGRATION; PROJECT; SYSTEM;
D O I
10.3390/pr12102258
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Geophysical monitoring of CO2 geological sequestration represents a critical technology for ensuring the long-term safe storage of CO2 while verifying its characteristics and dynamic changes. Currently, the primary geophysical monitoring methods employed in CO2 geological sequestration include seismic, fiber optic, and logging technologies. Among these methods, seismic monitoring techniques encompass high-resolution P-Cable three-dimensional seismic systems, delayed vertical seismic profiling technology, and four-dimensional distributed acoustic sensing (DAS). These methods are utilized to monitor interlayer strain induced by CO2 injection, thereby indirectly determining the injection volume, distribution range, and potential diffusion pathways of the CO2 plume. In contrast, fiber optic monitoring primarily involves distributed fiber optic sensing (DFOS), which can be further classified into distributed acoustic sensing (DAS) and distributed temperature sensing (DTS). This technology serves to complement seismic monitoring in observing interlayer strain resulting from CO2 injection. The logging techniques utilized for monitoring CO2 geological sequestration include neutron logging methods, such as thermal neutron imaging and pulsed neutron gamma-ray spectroscopy, which are primarily employed to assess the sequestration volume and state of CO2 plumes within a reservoir. Seismic monitoring technology provides a broader monitoring scale (ranging from dozens of meters to kilometers), while logging techniques operate at centimeter to meter scales; however, their results can be significantly affected by the heterogeneity of a reservoir.
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页数:16
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