Liang, Mingliang and Wang, Zongxiu and Zheng, Guodong and Zhang, Xiaobao and Greenwell, Hugh Christopher and Zhang, Kaixun and Feng, Xingqiang and Zhang, Linyan and Li, Huijun (2021) 'Preliminary Experimental Study of Methane Adsorption Capacity in Shale After Brittle Deformation Under Uniaxial Compression.', Frontiers in Earth Science, 9 . p. 542912.
This paper presents a preliminary experimental study on methane adsorption capacity in shales before and after artificial deformation. The experimental results are based on uniaxial compression and methane isothermal adsorption tests on different shale samples from the Silurian Longmaxi Formation, Daozhen County, South China. Two sets of similar cylindrical samples were drilled from the each same bulk sample, one set was subjected to a uniaxial compressive simulation test and then crushed as artificial deformed shale sample, the other set was directly crushed as the original undeformed shale sample. And then we conducted a comparative experimental study of the methane adsorption capacity of original undeformed and artificially deformed shales. The uniaxial compression simulation results show that the failure mode of all samples displayed brittle deformation. The methane isothermal adsorption results show that the organic matter content is the main controlling factor of shale methane adsorption capacity. However, the comparative results also show that the compression and deformation have an effect on methane adsorption capacity, with shale methane adsorption capacity decreasing by about 4.26–8.48% after uniaxial compression deformation for the all shale samples in this study.
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|Publisher Web site:||https://doi.org/10.3389/feart.2021.542912|
|Publisher statement:||© 2021 Liang, Wang, Zheng, Zhang, Greenwell, Zhang, Feng, Zhang and Li. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.|
|Date accepted:||29 March 2021|
|Date deposited:||15 November 2021|
|Date of first online publication:||22 April 2021|
|Date first made open access:||15 November 2021|
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