Articles | Volume 13, issue 6
https://doi.org/10.5194/se-13-975-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-13-975-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
21 Jun 2022
Research article |
| 21 Jun 2022
| 21 Jun 2022
Structural diagenesis in ultra-deep tight sandstones in the Kuqa Depression, Tarim Basin, China
State Key Laboratory of Petroleum Resources and Prospecting, China
University of Petroleum (Beijing), Beijing 102249, China
College of Geosciences, China University of Petroleum (Beijing), Beijing
102249, China
Dong Li
State Key Laboratory of Petroleum Resources and Prospecting, China
University of Petroleum (Beijing), Beijing 102249, China
Yong Ai
Research Institute of Petroleum Exploration and Development, Tarim
Oilfield Company, CNPC, Korla 841000, Xinjiang, China
Hongkun Liu
State Key Laboratory of Petroleum Resources and Prospecting, China
University of Petroleum (Beijing), Beijing 102249, China
Deyang Cai
Research Institute of Petroleum Exploration and Development, Tarim
Oilfield Company, CNPC, Korla 841000, Xinjiang, China
Kangjun Chen
State Key Laboratory of Petroleum Resources and Prospecting, China
University of Petroleum (Beijing), Beijing 102249, China
Yuqiang Xie
State Key Laboratory of Petroleum Resources and Prospecting, China
University of Petroleum (Beijing), Beijing 102249, China
Guiwen Wang
CORRESPONDING AUTHOR
State Key Laboratory of Petroleum Resources and Prospecting, China
University of Petroleum (Beijing), Beijing 102249, China
College of Geosciences, China University of Petroleum (Beijing), Beijing
102249, China
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Yang Su, Jin Lai, Wenle Dang, Xinjian Zhao, Chuang Han, Yongjia Zhang, Zhongrui Wang, Lei Wang, and Guiwen Wang
EGUsphere, https://doi.org/10.5194/egusphere-2025-2749, https://doi.org/10.5194/egusphere-2025-2749, 2025
This preprint is open for discussion and under review for Solid Earth (SE).
Short summary
Short summary
This study integrates geological and geophysical data to examine controls of sedimentary factors, earth stress (paleostress, in-situ 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 in-situ stress contributes to reduced fracture apertures.
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Short summary
(1) Structural diagenesis analysis is performed on the ultra-deep tight sandstone. (2) Fracture and intergranular pores are related to the low in situ stress magnitudes. (3) Dissolution is associated with the presence of fracture.
(1) Structural diagenesis analysis is performed on the ultra-deep tight sandstone. (2) Fracture...
