Gas-induced swelling in coal

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August undefined, 2024

Web@article{osti_5549810, title = {Swelling stress and free energy in gas/coal systems}, author = {Ettinger, I L and Kovaleva, I B}, abstractNote = {A study of the porous structure of fossil carbonaceous fuels has shown that most of the void space in coals is in pores of molecular size, which are volumetrically filled with sorbate. In the process of gas sorption … WebNarkiewicz and Mathews (2009) calculated the CO 2 -induced swelling of coal via MD and proposed that the anisotropic swelling was greater perpendicular to the bedding plane. …

Hydromechanical Impacts of CO2 Storage in Coal Seams of the …

WebAug 28, 2016 · Enhanced coalbed methane recovery and CO 2 geostorage in coal seams are severely limited by permeability decrease caused by CO 2 injection and associated coal matrix swelling. Typically, it is assumed … WebFeb 20, 2024 · The phenomenon of coal swelling caused by gas adsorption is well known. For Enhanced Coal Bed Methane Recovery and carbon storage, coal swelling induced by gases adsorption may cause significant reservoir permeability change. home serenity le lavandou

A model of adsorption induced coal deformation based on

WebAbstract Coal permeability measurements are normally conducted under the assumption that gas pressure in the matrix is equalized with that in fracture and that gas sorption-induced swelling/shrinking strain is uniformly distributed within the coal.However,the validity of this assumption has long been questioned and differential strain between ... WebThe experimental results show that gas adsorption induced shale swelling and the absolute adsorption amount in different gases are both about one order of magnitude lower than that of coal and are in a trend line with the results of gas adsorption-induced coal swelling, indicating that shale swelling mechanism may be similar to that of coal. WebCoal permeability measurements are normally conducted under the assumption that gas pressure in the matrix is equalized with that in fracture and that gas sorption-induced swelling/shrinking strain is uniformly distributed within the coal. hip hop santa lyrics

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CO2 adsorption and swelling of coal under ... - Semantic Scholar

WebOct 13, 2024 · The results show that the coal adsorption capacity in CO2 is almost two times greater than that in CH4, and nitrogen adsorption is the least among these gases. … WebApr 6, 2024 · Under subsurface conditions, the injected CO 2 is partly present as a free phase and partly immobilised by adsorption to the coal matrix, what causes coal swelling. The adsorption-induced swelling of the coal matrix constricts the fluid flow pathways, leading to a reduction in permeability, and can result in a considerable loss of injectivity ... homesergeant couponWebApr 1, 2024 · The gas-induced swelling behavior of coal is important when considering CO2 sequestration into coal seams or enhanced coalbed methane applications, but coals may also swell in the presence of… Expand 73 Strain development in unconfined coals exposed to CO2, CH4 and Ar : Effect of moisture F. Bergen, C. Spiers, G. Floor, P. Bots home series a. american

"WebFeb 20, 2024 · For better application, a simple and effective model for gas adsorption-induced coal swelling must be established. In this paper, a new model should be … " - Gas-induced swelling in coal

Gas-induced swelling in coal

Heterogeneous Sorption and Swelling in a Confined and Stressed Coal …

WebOct 9, 2007 · Less coal swelling would be favorable for acid gas sequestration with less permeability reduction. However, coals with smaller Langmuir volume have less capacity … WebFeb 20, 2024 · The swelling and shrinkage of coal matrix may reduce or increase the apertures, which will cause profound changes in the cleat porosity and permeability of …

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WebThe gas-induced swelling behavior of coal is important when considering CO 2 sequestration into coal seams or enhanced coalbed methane applications, but coals … WebNov 17, 2024 · Effective stress and gas sorption/desorption-induced coal matrix swelling/shrinkage have competitive control on the net change of coal permeability (Liu et al. 2010, 2011; Wang et al. 2024, 2024a, b). For example, a case of permeability evolution for gas injection tests under constant confining pressure.

WebMay 4, 2024 · In this study, an investigation of carbon dioxide sorption induced coal swelling and its effects on gas transport in coal is shown. The model presented is based on an existing coupled thermal, hydraulic, chemical and mechanical (THCM) model. WebMar 1, 2015 · The internal swelling ratio that is defined as the ratio of the internal swelling to the gas sorption-induced swelling of coal matrix or coal block was also calculated. The internal swelling ratio may roughly keep constant during coalbed methane recovery when the in situ stress was greater than 5 MPa.

WebMar 1, 2007 · The model is tested by application to published experimental measurements of gas adsorption-induced coal swelling. 2. Model development. A porous body dilates … WebDec 1, 2010 · In order to investigate the unique mechanical behavior of swelling deformation effect of coal induced by gas adsorption, the self-developed meso …

WebOct 30, 2024 · Coal permeability is sensitive to reservoir stress conditions and the gas sorption-induced swelling/shrinkage behavior 5,6,7. This information has been …

WebFeb 10, 2024 · Due to the lack of data in the literature, this article discusses the sorption-induced swelling properties of hard coal in a methane and carbon dioxide atmosphere. ... A Theoretical Model for Coal Swelling Induced by Gas Adsorption in the Full Pressure Range. Adsorpt. Sci. Technol. 2024, 38, 94–112. hip hop saved my life (feat nikki jean)WebNarkiewicz and Mathews (2009) calculated the CO 2 -induced swelling of coal via MD and proposed that the anisotropic swelling was greater perpendicular to the bedding plane. The deformation of coal induced by CH 4 adsorption was also quantified via the quenched solid density functional theory (QSDFT) and clarified the adsorption-induced ... home servant servicesWebDec 1, 2010 · In order to investigate the unique mechanical behavior of swelling deformation effect of coal induced by gas adsorption, the self-developed meso-mechanical testing apparatus of coal... homes erin ontario homeserve £1 offerWebMar 1, 2011 · Coal swelling induced by gas adsorption is a well-known phenomenon. In order to enhance coalbed methane production and greenhouse gases sequestration, adsorption phase should be understood deeply ... hip hop running playlistWebAug 28, 2016 · Furthermore, fracturing of the mineral phase (embedded in the coal) was observed; this fracturing was induced by the internal swelling stress. We conclude that coal permeability is drastically … home serien streamWebFeb 22, 2024 · It shows that the expansion caused by coal-adsorbed gas may be caused by the thermal expansion caused by the increase in coal temperature. The expansion deformation of the coal will compress the fracture channels of the coal, which leads to a decrease in permeability. hip hop saved my life lupe fiasco