CO2 geological sequestration potential of the low-rank coals in the southern margin of the Junggar Basin

Carbon capture, utilization, and storage (CCUS) is considered one of the most effective measures to achieve net-zero carbon emissions by 2050, and low-rank coal reservoirs are commonly recognized as potential CO 2 storage sites for carbon sequestration. To evaluate the geological CO 2 sequestration...

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Bibliographic Details
Published in:Frontiers of earth science 2023-09, Vol.17 (3), p.727-738
Main Authors: Zhao, Qun, Deng, Ze, Zhao, Meng, Liu, Dexun
Format: Article
Language:English
Subjects:
Adsorption
Anticlines
Carbon capture and storage
Carbon dioxide
Carbon dioxide fixation
Carbon emissions
Carbon sequestration
Coal
Earth and Environmental Science
Earth Sciences
Emission measurements
Emissions
Field tests
Geology
High pressure
Low temperature
Mercury
Net zero
Overburden
Permeability
Porosity
Research Article
Reservoirs
Rivers
Synclines
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Summary:Carbon capture, utilization, and storage (CCUS) is considered one of the most effective measures to achieve net-zero carbon emissions by 2050, and low-rank coal reservoirs are commonly recognized as potential CO 2 storage sites for carbon sequestration. To evaluate the geological CO 2 sequestration potential of the low-rank coal reservoirs in the southern margin of the Junggar Basin, multiple experiments were performed on coal samples from that area, including high-pressure mercury porosimetry, low-temperature N 2 adsorption, overburden porosity and permeability measurements, and high-pressure CH 4 and CO 2 isothermal adsorption measurements. Combined with the geological properties of the potential reservoir, including coal seam development and hydrodynamic characteristics, the areas between Santun River and Sigong River in the Junggar Basin were found to be suitable for CO 2 sequestration. Consequently, the coal-bearing strata from Santun River to Sigong River can be defined as “potentially favorable areas for CO 2 eequetfraiion” To better guide the future field test of CO 2 storage in these areas, three CO 2 sequestration modes were defined: 1) the broad syncline and faulted anticline mode; 2) the monoclinic mode; 3) the syncline and strike-slip fault mode.
ISSN:2095-0195
2095-0209
DOI:10.1007/s11707-022-1043-9