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July 1, 2026Fractal and FractionalOpen Access

Calibrated Multi-Method Fractal Characterization of Full-Scale Pore Structure and Geological Controls in Deep Anthracite: Case Study from Daning–Jixian Block, Ordos Basin

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Authors

BZBin ZhangYMYa MengSYSong Yang

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Overview

Randomized trial evaluates pore structure in deep anthracite, suggesting implications for coalbed methane storage.

Key Points

  • This study aims to characterize the multiscale heterogeneity of deep coal reservoirs and its impact on coalbed methane storage.
  • Characterization of deep No. 8 coal samples using CO2 adsorption, N2 adsorption, mercury intrusion porosimetry, and nuclear magnetic resonance.
  • Development of a method-constrained calibration framework for fractal dimensions assigned to pore-size intervals.
  • Evaluation of pore structure relationships with coal quality and maceral composition.
  • Deep anthracite demonstrates a trimodal pore-size distribution, with significant micropore dominance.
  • Calibrated fractal dimensions provide a more reliable representation of reservoir heterogeneity compared to single-method interpretations.
  • Pore development is influenced by ash content, fixed carbon, and vitrinite, with inertinite contributing to macropores.

Cite This Study

Zhang et al. (2026) studied this question.

synapsesocial.com/papers/6a44b0485cd2549c8bc44ec9https://doi.org/10.3390/fractalfract10070443
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Multi-Scale Characterization and Formation Mechanism of Pore Structure Heterogeneity in Deep-Buried Coal Reservoirs: A Case Study of the Benxi Formation, Ordos Basin2026
  2. 2Pore structure of deep high-rank coal and its impact on coalbed methane adsorption: a case study of the Daning-Jixian block, Eastern Ordos Basin2026
  3. 3Comprehensive Characterization and Metamorphic Control Analysis of Full Apertures in Different Coal Ranks within Deep Coal Seams2024 · 7 citations
  4. 4Multifractal Characteristics of Pore Structure in Deep Coal Reservoirs of the Suide Block, Ordos Basin2026
  5. 5Multiscale Pore Structure of Deep Coal with Varying Thermal Maturity in the Eastern Ordos Basin: A Perspective from Coal Composition2026