Computed X-ray Tomography Investigation of Porosity and Permeability of the Liujiagou Formation Sandstone Exposed to CO2-Saturated Brine

doi:10.1111/1755-6724.15083

首页 > 过刊浏览>2023年第97卷第3期 >946-955. DOI:10.1111/1755-6724.15083

Computed X-ray Tomography Investigation of Porosity and Permeability of the Liujiagou Formation Sandstone Exposed to CO2-Saturated Brine
DOI:
                        10.1111/1755-6724.15083
                    
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                        XUE QuanXUE Quan

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ZHANG LiweiZHANG Liwei

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XU LiangXU Liang

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Matthew MYERSMatthew MYERS

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Cameron WHITECameron WHITE

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MEI KaiyuanMEI Kaiyuan

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WANG HanwenWANG Hanwen

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LI QiLI Qi

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LI XiaochunLI Xiaochun

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XUE Quan
XUE Quan
1 State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 2 University of Chinese Academy of Sciences, Beijing 100049, China
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ZHANG Liwei
ZHANG Liwei
1 State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 2 University of Chinese Academy of Sciences, Beijing 100049, China
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XU Liang
XU Liang
1 State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 2 University of Chinese Academy of Sciences, Beijing 100049, China
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Matthew MYERS
Matthew MYERS
3 CSIRO Energy, Australian Resources Research Centre, Kensington, Western Australia 6151, Australia
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Cameron WHITE
Cameron WHITE
3 CSIRO Energy, Australian Resources Research Centre, Kensington, Western Australia 6151, Australia
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MEI Kaiyuan
MEI Kaiyuan
4 School of New Energy and Materials, Southwest Petroleum University, Chengdu 610500, China
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WANG Hanwen
WANG Hanwen
1 State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 2 University of Chinese Academy of Sciences, Beijing 100049, China
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LI Qi
LI Qi
1 State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 2 University of Chinese Academy of Sciences, Beijing 100049, China
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LI Xiaochun
LI Xiaochun
1 State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China 2 University of Chinese Academy of Sciences, Beijing 100049, China
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The authors are grateful for the funding support provided by the National Natural Science Foundation of China (Grant Nos. U1967208 and 42172315).

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Abstract:

In order to improve CO2 capture, utilization and storage (CCUS) to solve carbon emission, sandstone from the Triassic Liujiagou Formation (LF) from the Ordos Basin in China was investigated using permeability tests and computed X-ray tomography (CT) scanning. The presence of reactive minerals within the geological CO2 sequestration target storage formation can allow reaction with injected CO2, which changes the porosity and permeability of the LF beds, affecting storage effectiveness. To investigate the effect of chemical reactions on the pore structure and permeability of sandstone cores representing the LF CO2 storage, tests were conducted to analyze the changes in porosity and permeability of sandstone cores induced by CO2-saturated brine at different reaction times (28-day maximum reaction period). Porosity and permeability of the sandstone increased after reaction with CO2-saturated brine due to mineral dissolution. The sandstone exhibited an increase in porosity and permeability after 15 days of reaction with CO2-saturated brine. Moreover, there was an increase in the volume of large pores in the sandstone after the 28-day period. The pore network of the sandstone was established through CT results, and the porosity calculated based on the obtained pore network was close to that measured in the test, demonstrating the feasibility to use CT to study the evolution of the microstructure of sandstone after long-time exposure to CO2-saturated brine.

Key words:CO2 capture-utilization-storage, Triassic sandstone, permeability, porosity, Ordos Basin

引用本文

XUE Quan, ZHANG Liwei, XU Liang, Matthew MYERS, Cameron WHITE, MEI Kaiyuan, WANG Hanwen, LI Qi, LI Xiaochun.2023. Computed X-ray Tomography Investigation of Porosity and Permeability of the Liujiagou Formation Sandstone Exposed to CO2-Saturated Brine[J]. ACTA GEOLOGICA SINICA(English edition),97(3):946~955

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收稿日期:2022-12-14
最后修改日期:2023-05-24
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在线发布日期: 2023-06-29
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