Gas-induced swelling in coal
WebOct 30, 2024 · As gas desorbs, the coal matrix shrinks and swells with adsorption. The result in shrinkage or swelling is called sorption-induced strain. The reservoir pressure leads to gas desorption... WebFeb 20, 2024 · The phenomenon of coal swelling caused by gas adsorption is well known. For Enhanced Coal Bed Methane Recovery …
Gas-induced swelling in coal
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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 … WebSep 26, 2024 · To date, many laboratory studies of gas-induced swelling in coal have used dry material or samples in which the moisture content was not closely controlled. Therefore, it is necessary to understand the swelling and shrinkage characteristics of coal under moisture-saturated conditions.
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. 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.
WebOct 16, 2003 · MATRIX SWELLING WITH CO2 INJECTION IN A CBM RESERVOIR AND ITS IMPACT ON PERMEABILITY OF COAL A. Zutshi, S. Harpalani Geology 2004 Coal permeability is very sensitive to the volumetric changes induced in coal matrix as a result of sorption of gas (es). Although there have been no studies to investigate the matrix … 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.
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 …
WebMay 3, 2024 · The swelling deformation of coal detected by X-ray CT was conducted using the following method. (1) The system was set up as shown in Figure 2. (2) High-purity CO2 was injected into the system to ensure it was properly sealed. (3) The coal sample was mounted in the cavity. thibault mathieuWebThe gas-induced swelling behavior of coal is important when considering CO 2 sequestration into coal seams or enhanced coalbed methane applications, but coals … sage pulse 590 4 fly rod reviewWebCoal 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. thibault mayeurWebAbstract 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 ... thibault mathivatWebJun 16, 2024 · Summary. Gas adsorption, desorption, and displacement occur throughout the coalbed methane (CBM) and enhanced coalbed methane (ECBM) recovery process, causing the coal pores to deform and affecting injectivity and productivity. The primary objectives of this study include determining the pressure at which the monolayer … sage pulse spey rod reviewthibault mattlingerWebJan 1, 2024 · Karacan (2007) conducted a series of experimental tests to study the swelling-induced volumetric strains internal to a stressed coal associated with CO2 sorption. Liu et al. (2016) investigated the effects of matrix swelling area propagation on the permeability evolution by using both natural and reconstituted samples. thibault mazard