2020
DOI: 10.1002/ese3.796
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Structural characteristics and porosity estimation of organic matter‐hosted pores in gas shales of Jiaoshiba Block, Sichuan Basin, China

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Cited by 7 publications
(10 citation statements)
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“…Various types of reservoir spaces were observed by FE-SEM, of which organic pores, intergranular pores, dissolution pores, and microfractures were the most common, and the morphology, size, and content of different types of pores are quite different (Figures and ). , In previous studies, the pore size extracted by image software was usually converted into a diameter of a circle of equal area to study size distribution characteristics. ,, However, pores are more like ellipses with different long and short axis lengths when compared to circles. Therefore, the lengths of the major axis and minor axis of ellipses with the same area as pores and the same long/minor axis ratio are used to accurately characterize the true pore size in this paper.…”
Section: Resultsmentioning
confidence: 99%
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“…Various types of reservoir spaces were observed by FE-SEM, of which organic pores, intergranular pores, dissolution pores, and microfractures were the most common, and the morphology, size, and content of different types of pores are quite different (Figures and ). , In previous studies, the pore size extracted by image software was usually converted into a diameter of a circle of equal area to study size distribution characteristics. ,, However, pores are more like ellipses with different long and short axis lengths when compared to circles. Therefore, the lengths of the major axis and minor axis of ellipses with the same area as pores and the same long/minor axis ratio are used to accurately characterize the true pore size in this paper.…”
Section: Resultsmentioning
confidence: 99%
“…4,7−9 In previous studies, the pore size extracted by image software was usually converted into a diameter of a circle of equal area to study size distribution characteristics. 4,25,67 However, pores are more like ellipses with different long and short axis lengths when compared to circles. Therefore, the lengths of the major axis and minor axis of ellipses with the same area as pores and the same long/minor axis ratio are used to accurately characterize the true pore size in this paper.…”
Section: Resultsmentioning
confidence: 99%
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“…The observed OM-hosted pores present in this work are much smaller than those found in the marine overmature siliceous shale from Wufeng and Longmaxi Formations. 60,61 Inorganic mineral-related pores, including intergranular pores, intraparticle pores, and intercrystal pores, are tens of nanometers to a few micrometers in diameter with irregular, slim, or triangular shapes. Similar to siliceous shale, inorganic mineral-related pores are the dominant pore types, with few OM-hosted pores found in analcite-rich siliceous shale.…”
Section: Calcareous Shale and Analcite-rich Calcareousmentioning
confidence: 99%