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July 23, 2026ACS OmegaOpen Access

Development Characteristics and Controlling Factors of Inorganic Pores in Qiongzhusi Formation Shales from Different Structural Positions of the Deyang–Anyue Rift Trough

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Authors

HWHaoke WangCLChao LuoKZKesu Zhong

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Overview

Randomized trial examines inorganic pore types in Qiongzhusi shales, revealing key structural variations and implications for gas exploration.

Key Points

  • This research aims to characterize inorganic pore heterogeneity in Qiongzhusi formation shales from different structural positions in the Deyang–Anyue rift trough.
  • Analyzed shales from intratrough and trough-margin settings using large-scale Mosaic scanning electron microscopy (LAM-SEM) and advanced mineral identification system (AMICS).
  • Quantitative assessment of inorganic pore types, area fraction, size distribution, and morphology was conducted at a pixel scale.
  • Intratrough shales had low inorganic pore area fractions with larger average pore sizes (predominantly unimodal), mainly consisting of feldspar-hosted dissolution pores.
  • Trough-margin shales exhibited higher inorganic pore area fractions and smaller pore sizes, with multimodal size distributions, yielding equant and smoother pores.
  • Pore characteristics were influenced by mineral composition and TOC, correlating quartz with size and feldspar inversely, alongside varying effects of soluble and clay minerals.

Cite This Study

Wang et al. (2026) studied this question.

synapsesocial.com/papers/6a61b02ffaa9903c5116acbbhttps://doi.org/10.1021/acsomega.6c03102
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