The authors developed a 3-D numerical injection model on parallel TOUGH2-FLAC3D based on the site-specific stratigraphic information in Ordos Basin to simulate the Shenhua CO2 geological storage (CGS) demonstration project injection process for three years and forecast CO2 migration and layers displacement after injection for seven years. The results suggested that CO2 migration did not stop after three years of consecutive injection, but migration rate was slowing down with time. As a result, displacement near injection well increased with injection and decreased slowly after injection. The maximum displacement of surface center occurred near the end of injection, which was only 1.24 cm. According to the displacement result, it is safe to continue injecting for this project.
Abstract
The authors developed a 3-D numerical injection model on parallel TOUGH2-FLAC3D based on the site-specific stratigraphic information in Ordos Basin to simulate the Shenhua CO2 geological storage (CGS) demonstration project injection process for three years and forecast CO2 migration and layers displacement after injection for seven years. The results suggested that CO2 migration did not stop after three years of consecutive injection, but migration rate was slowing down with time. As a result, displacement near injection well increased with injection and decreased slowly after injection. The maximum displacement of surface center occurred near the end of injection, which was only 1.24 cm. According to the displacement result, it is safe to continue injecting for this project.
关键词
CGS /
Parallel numerical simulation /
CO2 migration /
surface displacement /
Ordos Basin
Key words
CGS /
Parallel numerical simulation /
CO2 migration /
surface displacement /
Ordos Basin
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参考文献
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基金
Supported by projects of National Natural Science Foundation of China (Nos. 41372239, 41772238, 41602243)
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