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Articles | Volume 17, issue 4
Articles | Volume 17, issue 4
https://doi.org/10.5194/se-17-643-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-17-643-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 4
Research article
 | Highlight paper
 | 
15 Apr 2026
Research article | Highlight paper |  | 15 Apr 2026

Geological factors and fracture distribution in deep and ultra-deep sandstones in Kuqa Depression, Tarim Basin, China

Yang Su, Jin Lai, Wenle Dang, Xinjian Zhao, Chuang Han, Yongjia Zhang, Zhongrui Wang, Lei Wang, and Guiwen Wang

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Editorial statement
The manuscript delivers a predictive, integrated model for fractures in truly deep/ultra-deep tight sandstones combining cores, thin sections, acoustic-emission tests, and well logs, linking micro- to reservoir-scale fracture evidence. It quantifies sedimentary controls, brindging rock mechanics, structural geology and stratigraphy/sedimentology. It also delivers clear rules and implementation, ensuring transferability, which is rather important for such a rare case study.
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Short summary
This study integrates geological and geophysical data to examine controls of sedimentary factors, earth stress, and tectonic structure on fracture distribution in deep and ultra-deep sandstones in Kuqa Depression. Key findings show fracture density increases with sandbody thickness and paleostress magnitude, is higher near faults and fold hinges, and is favored by thinner sand-mud interbeds. Increased horizontal stress differences contributes to reduced fracture apertures.
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