Adsorption behavior and mechanism of CO<sub>2</sub>in the Longmaxi shale gas reservoir

Xie, Weidong; Vandeginste, Veerle; Chen, Si; Yu, Zhenghong; Wang, Jiyao; Wang, Hua; Gan, Huajun

doi:10.1039/d2ra03632k

Cited by 6 publications

(4 citation statements)

References 62 publications

(67 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared to marine shale, continental shale often contains more clay and less quartz. All samples vary in their TOC content ranges from 3.19 to 4.27 and mineralogical composition as shown in Table 1 [22,23].…”

Section: Sample Preparationmentioning

confidence: 99%

“…Experiments were carried out at three distinct temperatures 35 °C, 45 °C, and 55 0 C at seven different pressure values form 1-8MPa to better understand the significance of temperature in the adsorption process as shown in (Table 2). The chosen temperatures were meant to mimic actual conditions where there can be significant variations in subsurface temperature [22,23].…”

Section: Sample Preparationmentioning

confidence: 99%

See 1 more Smart Citation

Carbon dioxide adsorption on shale: A comparative study of isotherm models across diverse samples and temperatures

Hussain,

Farhah

2024

E3S Web of Conf.

View full text Add to dashboard Cite

In order to address one of the most serious environmental concerns of our day, reducing carbon footprints, the globe has turned its attention to carbon dioxide (CO2) storage as a potential solution. Because of its unique features, shale is one of the most intriguing options in this area. Adsorption is the method through which CO2 is stored in shale, particularly in its supercritical condition. Adsorption isotherm models can be used to deduce the behaviour and mechanisms of this adsorption. Langmuir, Freundlich, Dubinin-Astakhov (D-A), and Brunauer-Emmett-Teller (BET) models are among the many available for CO2 modelling on shale. We attempted to fit these models to experimental data gathered from literature sources in this study, concentrating on four separate shale samples from various places in China. Among these samples are LMX1 and LMX2 from the Silurian Longmaxi Formation, WF1 from the Ordovician Wufeng Formation in the Sichuan Basin, and YC from the Ordos Basin's Yanchang Formation. The total organic carbon (TOC) content of these shales, three marine and one continental, ranged from 3.19 to 4.27. The experimental data used to fit the model was obtained at three different temperatures: 35, 45, and 55°C. The Langmuir and D-A models offered the best fit for the data across all samples and temperature. R2 values 0.93429 (for YC rock at 35°C) to 0.99287 (for WF1 at 35°C) for Langmuir and 0.88879 to 0.99201 LMX1 at 35°C. The theoretical underpinnings of these models, which account for the physical properties and adsorption dynamics of supercritical CO2 on shale, are responsible for their performance. Finally, this study adds to our understanding of CO2 adsorption on shale, giving useful insights for future research and potential practical uses in CO2 storage. More research is needed, however, to completely understand the mechanisms and influencing factors of CO2 adsorption in various types of shale, as well as to develop the models used to forecast this behaviour.

show abstract

Section: Sample Preparationmentioning

confidence: 99%

Section: Sample Preparationmentioning

confidence: 99%

Carbon dioxide adsorption on shale: A comparative study of isotherm models across diverse samples and temperatures

Hussain,

Farhah

2024

E3S Web of Conf.

View full text Add to dashboard Cite

show abstract

“…The pore size is correlated to partial pressure. Several adsorption theories and models have been proposed for adsorption of differing gases in pores in various rock types, for example, CO 2 in shale (Xie et al, 2022).…”

Section: Microstructures Of Rock Saltmentioning

confidence: 99%

Mineralogy, microstructures and geomechanics of rock salt for underground gas storage

Vandeginste

Buysschaert

et al. 2023

Deep Underground Science and Engineering

Self Cite

View full text Add to dashboard Cite

Rock salt has excellent properties for its use as underground leak‐proof containers for the storage of renewable energy. Salt solution mining has long been used for salt mining, and can now be employed in the construction of underground salt caverns for the storage of hydrogen gas. This paper presents a wide range of methods to study the mineralogy, geochemistry, microstructure and geomechanical characteristics of rock salt, which are important in the engineering of safe underground storage rock salt caverns. The mineralogical composition of rock salt varies and is linked to its depositional environment and diagenetic alterations. The microstructure in rock salt is related to cataclastic deformation, diffusive mass transfer and intracrystalline plastic deformation, which can then be associated with the macrostructural geomechanical behavior. Compared to other types of rock, rock salt exhibits creep at lower temperatures. This behavior can be divided into three phases based on the changes in strain with time. However, at very low effective confining pressure and high deviatoric stress, rock salt can exhibit dilatant behavior, where brittle deformation could compromise the safety of underground gas storage in rock salt caverns. The proposed review presents the impact of purity, geochemistry and water content of rock salt on its geomechanical behavior, and thus, on the safety of the caverns.

show abstract

“…Shale gas plays a crucial role in natural gas production in China because its great potential (recoverable reserves of ~3.12 × 10 13 m 3 ) (Liu et al, 2019a;Li et al, 2019;Yao et al, 2019). The exploration and development of shale gas is the choice of fossil energy resource and national needs, which is of great significance to China's energy security (Xie et al, 2022). The methane content of shales is generally greater than 85%, even up to 99% (Howarth et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations of CO2 adsorption behavior in shales: Implication for CO2 geological storage

et al. 2023

Self Cite

View full text Add to dashboard Cite

Injecting CO2 into shale reservoirs has dual benefits for enhancing gas recovery and CO2 geological sequestration, which is of great significance to ensuring energy security and achieving the “Carbon Neutrality” for China. The CO2 adsorption behavior in shales largely determined the geological sequestration potential but remained uncharted. In this study, the combination of isothermal adsorption measurement and basic petro-physical characterization methods were performed to investigate CO2 adsorption mechanism in shales. Results show that the CO2 sorption capacity increase gradually with injection pressure before reaching an asymptotic maximum magnitude, which can be described equally well by the Langmuir model. TOC content is the most significant control factor on CO2 sorption capacity, and the other secondary factors include vitrinite reflectance, clay content, and brittle mineral content. The pore structure parameter of BET-specific surface area is a more direct factor affecting CO2 adsorption of shale than BJH pore volume. Langmuir CO2 adsorption capacity positive correlated with the surface fractal dimension (D1), but a significant correlation is not found with pore structure fractal dimension (D2). By introducing the Carbon Sequestration Leaders Forum and Department of Energy methods, the research results presented in this study can be extended to the future application for CO2 geological storage potential evaluation in shales.

show abstract

Adsorption behavior and mechanism of CO₂in the Longmaxi shale gas reservoir

Abstract: The micropore filling mainly occurs in micropores, including the slit, capillary and ink-shaped pores. Molecular layer adsorption mainly occurs in mesopores and macropores, including the slit, plate, capillary and ink-shaped pores.

Cited by 6 publications

References 62 publications

Carbon dioxide adsorption on shale: A comparative study of isotherm models across diverse samples and temperatures

Carbon dioxide adsorption on shale: A comparative study of isotherm models across diverse samples and temperatures

Mineralogy, microstructures and geomechanics of rock salt for underground gas storage

Experimental investigations of CO2 adsorption behavior in shales: Implication for CO2 geological storage

Contact Info

Product

Resources

About

Adsorption behavior and mechanism of CO2in the Longmaxi shale gas reservoir

Abstract: The micropore filling mainly occurs in micropores, including the slit, capillary and ink-shaped pores. Molecular layer adsorption mainly occurs in mesopores and macropores, including the slit, plate, capillary and ink-shaped pores.

Cited by 6 publications

References 62 publications

Carbon dioxide adsorption on shale: A comparative study of isotherm models across diverse samples and temperatures

Carbon dioxide adsorption on shale: A comparative study of isotherm models across diverse samples and temperatures

Mineralogy, microstructures and geomechanics of rock salt for underground gas storage

Experimental investigations of CO2 adsorption behavior in shales: Implication for CO2 geological storage

Contact Info

Product

Resources

About

Adsorption behavior and mechanism of CO₂in the Longmaxi shale gas reservoir