Matrix shrinkage and swelling characteristics of European coals
By S. Durucan, Mustafa Ahsanb, Ji-Quan Shia. 2009
150 citations recorded by the source corpus.
Abstract Matrix deformation experiments have been performed on a range of different rank coals subjected to carbon dioxide and methane sorption at representative in situ reservoir pressures under unconfined conditions. These experiments were complemented by a set of simultaneous gas permeability and strain measurements. The results were related to coal rank and the mechanical and elastic properties of each coal type tested. The measured CO 2 adsorption strains were consistently higher than those for methane, by a factor ranging between 1.3 and 4, depending on the coal type. The corresponding swelling coefficients were estimated in the range of 0.15 kg/ m 3 to 1.0 kg/ m 3 for methane and 0.25 kg/ m 3 to 1.6 kg/ m 3 for carbon dioxide. For the samples tested, matrix swelling due to CO 2 adsorption displayed a positive correlation with coal rank and resulted in a significant decrease in permeability.
Subfields: Mechanics of Materials, Ocean Engineering
View Paper: https://www.semanticscholar.org/paper/3a091d5fae6062a5f0df4376ae5745c8331e955b
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In Mechanics of Materials
In Ocean Engineering
Citations in the corpus
- A Mathematical Model of Coupled Gas Flow and Coal Deformation with Gas Diffusion and Klinkenberg Effects (2015, background): “For example, the permeabilities of U.S. coal range between 0.1 and 250 mD (1 9 10-16–2.5 9 10-13 m2), whereas European basins tend to possess much lower permeabilities in the range of 0.001–0.5 mD (1 9 10-18–5 9 10-16 m2) (Durucan et al. 2009).”