Quantitative models and controlling factors of Langmuir volume and pressure for the measurement of shale gas adsorption: An Analytical study based review

Memon, Asadullah; Memon, Bilal Shams; Muther, Temoor; Qureshi, Abdul Sami; Uqaili, Umaid Ali; Jeswani, Sunder Sham; Zardari, Zaheer Hussain

doi:10.1007/s12517-022-09796-8

Cited by 3 publications

(2 citation statements)

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“…6−8 Owing to the large proportion of adsorbed gases in the shale, it is of great significance to investigate the adsorption and diffusion mechanisms of shale gas on the shale bed, so as to improve the shale gas recovery efficiency and promote its long-term, stable production. 9,10 By adopting methods such as the empirical model, macroscopic adsorption experiment, and molecular simulation, researchers have extensively investigated the adsorption and diffusion behaviors of shale gas. The macroscopic adsorption experiments mainly include gravimetric method, volumetric method, and permeability measurement method.…”

Section: Introductionmentioning

confidence: 99%

“…Shale gas is a green, eco-friendly natural gas with high caloric value and, therefore, the study on its adsorption, diffusion, and migration in shale minerals has become the research hotspot among numerous scholars. , Shale is mainly constituted by components like organic matters, inorganic clay minerals, quartz, and carbonates. , The experimental studies on isotherm adsorption on different clay-rich rocks indicate that the adsorption capacity of different types of clay minerals for CH 4 follows the order: montmorillonite, montmorillonite mixed layer, kaolinite, chlorite, and illite . As discovered from X-ray diffraction (XRD) analysis, typical mineral components like illite, montmorillonite, and calcite have important roles in gas adsorption on the shale bed. − Owing to the large proportion of adsorbed gases in the shale, it is of great significance to investigate the adsorption and diffusion mechanisms of shale gas on the shale bed, so as to improve the shale gas recovery efficiency and promote its long-term, stable production. , …”

Section: Introductionmentioning

confidence: 99%

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Molecular Simulation and Experimental Study on Adsorption Effect of CH₄/CO₂ in Shale Minerals

Tian,

Bai,

Zhao

et al. 2023

Ind. Eng. Chem. Res.

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This study adopted volumetric method experiments to explore the single-component methane and carbon dioxide adsorption characteristics of typical minerals under complicated conditions. Moreover, the fitted models such as Henry, Langmuir, and Freundlich models were employed to optimally characterize the adsorption process. On this basis, the grand canonical Monte Carlo (GCMC) method was carried out to investigate and verify the CH 4 /CO 2 adsorption rules of typical minerals under the same conditions microscopically. The results suggested that the adsorption amount increased at relatively higher temperatures (70−130 °C) and lower pressures (0−6 MPa); besides, carbon dioxide was more likely to be adsorbed. Under the same conditions, the CH 4 /CO 2 adsorption amounts followed the order of montmorillonite > calcite > illite. In addition, minerals with greater specific surface area, greater pore volume, and smaller average pore size had greater adsorption capacities for gases. The Freundlich model achieved the optimum degree of fitting for the adsorption rules of methane and carbon dioxide among the three minerals. With regard to mineral adsorption capacities and gas competitive adsorption relations, the GCMC method-based molecular simulation attained relatively higher goodness of fit with experimental results. This study provides basic data and theoretical foundation for carbon dioxide displacement of shale gas technology under specific environment.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Molecular Simulation and Experimental Study on Adsorption Effect of CH₄/CO₂ in Shale Minerals

Tian,

Bai,

Zhao

et al. 2023

Ind. Eng. Chem. Res.

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A Review of Molecular Models for Gas Adsorption in Shale Nanopores and Experimental Characterization of Shale Properties

Zhang

Xin

et al. 2023

ACS Omega

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Shale gas, as a promising alternative energy source, has received considerable attention because of its broad resource base and wide distribution. The establishment of shale models that can accurately describe the composition and structure of shale is essential to perform molecular simulations of gas adsorption in shale reservoirs. This Review provides an overview of shale models, which include organic matter models, inorganic mineral models, and composite shale models. Molecular simulations of gas adsorption performed on these models are also reviewed to provide a more comprehensive understanding of the behaviors and mechanisms of gas adsorption on shales. To accurately understand the gas adsorption behaviors in shale reservoirs, it is necessary to be aware of the pore structure characteristics of shale reservoirs. Thus, we also present experimental studies on shale microstructure analysis, including direct imaging methods and indirect measurements. The advantages, disadvantages, and applications of these methods are also well summarized. This Review is useful for understanding molecular models of gas adsorption in shales and provides guidance for selecting experimental characterization of shale structure and composition.

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Comprehensive Review of CO₂ Adsorption on Shale Formations: Exploring Widely Adopted Isothermal Models and Calculation Techniques

Zardari,

Mohshim,

Sarmadivaleh

et al. 2024

ACS Omega

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The continuous use of fossil fuels has a huge impact on climate change because they release CO 2 , which is a major greenhouse gas that causes 70−75% of global warming. Shale reserves could be used to store CO 2 to lower greenhouse gas emissions. This could happen mostly through adsorbed gas, which can make up about 85% of all shale gas. It is important to fully understand the CO 2 adsorption processes in shale, especially when using isothermal models, to get accurate estimates of storage capacity and predictions of how shale will behave. This work examines the application of several isothermal models, including Langmuir, Freundlich, Brunauer−Emmett−Teller, Dubinin−Radushkevich, Dubinin−Astakhov, Sips, Toth, and Ono-Kondo lattice models, to explore the adsorption of CO 2 on shale formations. The aim of this research work is to assess the efficiency of these models in forecasting CO 2 adsorption in different shale samples with specific mineral compositions, total organic content (TOC), surface areas, and pore geometry at 298 K and up to 2 MPa. This review provides a state-of-the-art knowledge on the constraints of existing models and proposes adaptations, such as integrating density-dependent correction factors and hybrid modeling techniques, to enhance precision during numerical simulation work. Furthermore, the possible incorporation of molecular dynamic (MD) simulations with experimental data is suggested to improve the understanding of the CO 2 adsorption in the geological rock at the molecular scale. The results emphasize the need for future studies to concentrate on the improvement of models and empirical validation to more accurately forecast the storage behavior of CO 2 in shale formations at resevoir conditions.

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Quantitative models and controlling factors of Langmuir volume and pressure for the measurement of shale gas adsorption: An Analytical study based review

Cited by 3 publications

References 64 publications

Molecular Simulation and Experimental Study on Adsorption Effect of CH₄/CO₂ in Shale Minerals

Molecular Simulation and Experimental Study on Adsorption Effect of CH₄/CO₂ in Shale Minerals

A Review of Molecular Models for Gas Adsorption in Shale Nanopores and Experimental Characterization of Shale Properties

Comprehensive Review of CO₂ Adsorption on Shale Formations: Exploring Widely Adopted Isothermal Models and Calculation Techniques

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Quantitative models and controlling factors of Langmuir volume and pressure for the measurement of shale gas adsorption: An Analytical study based review

Cited by 3 publications

References 64 publications

Molecular Simulation and Experimental Study on Adsorption Effect of CH4/CO2 in Shale Minerals

Molecular Simulation and Experimental Study on Adsorption Effect of CH4/CO2 in Shale Minerals

A Review of Molecular Models for Gas Adsorption in Shale Nanopores and Experimental Characterization of Shale Properties

Comprehensive Review of CO2 Adsorption on Shale Formations: Exploring Widely Adopted Isothermal Models and Calculation Techniques

Contact Info

Product

Resources

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Molecular Simulation and Experimental Study on Adsorption Effect of CH₄/CO₂ in Shale Minerals

Molecular Simulation and Experimental Study on Adsorption Effect of CH₄/CO₂ in Shale Minerals

Comprehensive Review of CO₂ Adsorption on Shale Formations: Exploring Widely Adopted Isothermal Models and Calculation Techniques