Topic Editors

Dr. Kouqi Liu
Institute of Energy, Peking University, Beijing 100871, China
Faculty of Mathematics and Natural Sciences, Christian-Albrechts-Universität, 24118 Kiel, Germany

Microstructural Analysis of Organic Matter in Shale

Abstract submission deadline
30 April 2024
Manuscript submission deadline
30 June 2024
Viewed by
1203

Topic Information

Dear Colleagues,

Organic matter is an important component the shale rocks; this is the basis of shale hydrocarbon generation. The spatial distribution, richness, type, pore structure, and maturity of organic matter can affect the resource evaluation process, development planning (i.e., hydraulic fracturing design), and target formation selection. Thus, understanding the properties of organic matter is vital. In this Topic, multiple studies related to the microstructures of organic matter will be published. Included topics include, but are not limited to, the following: the pore structures of organic matter; the mechanical properties of organic matter; the evaluation of the hydrocarbon generation potential of organic matter; the origins of organic matter; the flow of oil and gas in organic matter; the heterogeneity of organic matter.

Dr. Kouqi Liu
Prof. Dr. Mehdi Ostadhassan
Topic Editors

Keywords

  • organic matter
  • organic type
  • mechanical properties
  • pore structures
  • richness
  • heterogeneity

Participating Journals

Journal Name Impact Factor CiteScore Launched Year First Decision (median) APC
Energies
energies
3.2 5.5 2008 16.1 Days CHF 2600 Submit
Gases
gases
- - 2021 15.0 days * CHF 1000 Submit
Geosciences
geosciences
2.7 5.2 2011 23.6 Days CHF 1800 Submit
Minerals
minerals
2.5 3.9 2011 18.7 Days CHF 2400 Submit

* Median value for all MDPI journals in the second half of 2023.


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Published Papers (1 paper)

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14 pages, 6424 KiB  
Article
Petrographic Insights into the Evolution of Nano-Scale Organic Matter Pores with Organic Matter Conversion
by Lei Zhou, Xingqiang Feng, Linyan Zhang, Lin Wu and Rui Zhang
Minerals 2024, 14(2), 182; https://doi.org/10.3390/min14020182 - 08 Feb 2024
Viewed by 681
Abstract
To investigate the influence of organic matter conversion on the evolution of organic matter pores, fractional conversion (TRHI) and loss of TOC (TOCL) from the organic matter conversion of Middle Jurassic Dameigou Formation shale samples were calculated using [...] Read more.
To investigate the influence of organic matter conversion on the evolution of organic matter pores, fractional conversion (TRHI) and loss of TOC (TOCL) from the organic matter conversion of Middle Jurassic Dameigou Formation shale samples were calculated using petrographic analysis. The TRHI of organic matter varies from 0.30 to 0.88 and TOCL content ranges from 0.62% and 4.09%. Relative to samples of Type III organic matter in shales, type II samples exhibit higher TRHI and TOCL values. Petrographic calculations of TRHI reveal that the fractional conversion of different kerogens differs for the same thermal maturity level. The specific surface area (SBET) ranges between 1.25 and 6.63 m2/g and micropore surface area (Smic) ranges between 4.16 and 21.27 m2/g. Correlations between pore structure parameters and TOCL content are higher than those between pore structure parameters and TOC content. The original TOC content decreases with increasing maturity level owing to hydrocarbon generation from organic matter conversion. The development of organic matter pores depends mainly on organic matter conversion, which is influenced by the richness, organic maceral compositions, and thermal maturity of the organic matter. The contents of kaolinite, illite, and mixed-layer illite/smectite (I/S) in the studied shales are 17.83%–37.05%, 5.36%–11.31%, and 5.27%–14.36%, respectively. Pore structure parameters (SBET and Smic) exhibit moderate positive correlations with illite content and I/S content, and moderate negative correlations with kaolinite content, indicating that different clay minerals have differential effects on pore structure. Full article
(This article belongs to the Topic Microstructural Analysis of Organic Matter in Shale)
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