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Article

Hybrid Architecture for Tight Sandstone: Automated Mineral Identification and Quantitative Petrology

1
State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Petroleum Exploration and Production Research Institute, China Petrochemical Corporation, Beijing 102206, China
2
Sinopec Key Laboratory of Petroleum Accumulation Mechanisms, Petroleum Exploration and Production Research Institute, China Petrochemical Corporation, Wuxi 214126, China
3
Institute of Advanced Technology, University of Science and Technology of China, Hefei 230031, China
4
School of Computer Science and Technology, University of Science and Technology of China, Hefei 230027, China
5
Anhui Rank Artificial Intelligent Technology Co., Ltd., Hefei 230088, China
*
Author to whom correspondence should be addressed.
Minerals 2025, 15(9), 962; https://doi.org/10.3390/min15090962
Submission received: 5 August 2025 / Revised: 1 September 2025 / Accepted: 9 September 2025 / Published: 11 September 2025
(This article belongs to the Section Mineral Exploration Methods and Applications)

Abstract

This study proposes an integrated computer vision system for automated petrological analysis of tight sandstone micro-structures. The system combines Zero-Shot Segmentation SAM (Segment Anything Model), Mask R-CNN (Region-Based Convolutional Neural Networks) instance segmentation, and an improved MetaFormer architecture with Cascaded Group Attention (CGA) attention mechanism, together with a parameter analysis module to form a hybrid deep learning system. This enables end-to-end mineral identification and multi-scale structural quantification of granulometric properties, grain contact relationships, and pore networks. The system is validated on proprietary tight sandstone datasets, SMISD (Sandstone Microscopic Image Segmentation Dataset)/SMIRD (Sandstone Microscopic Image Recognition Dataset). It achieves 92.1% mIoU segmentation accuracy and 90.7% mineral recognition accuracy while reducing processing time from more than 30 min to less than 2 min per sample. The system provides standardized reservoir characterization through automated generation of quantitative reports (Excel), analytical images (JPG), and structured data (JSON), demonstrating production-ready efficiency for tight sandstone evaluation.
Keywords: computer vision; automated petrology; tight sandstone; mineral identification; structural quantification; hybrid deep learning; reservoir characterization computer vision; automated petrology; tight sandstone; mineral identification; structural quantification; hybrid deep learning; reservoir characterization

Share and Cite

MDPI and ACS Style

Dong, L.; Sun, C.; Yu, X.; Zhang, X.; Chen, M.; Xu, M. Hybrid Architecture for Tight Sandstone: Automated Mineral Identification and Quantitative Petrology. Minerals 2025, 15, 962. https://doi.org/10.3390/min15090962

AMA Style

Dong L, Sun C, Yu X, Zhang X, Chen M, Xu M. Hybrid Architecture for Tight Sandstone: Automated Mineral Identification and Quantitative Petrology. Minerals. 2025; 15(9):962. https://doi.org/10.3390/min15090962

Chicago/Turabian Style

Dong, Lanfang, Chenxu Sun, Xiaolu Yu, Xinming Zhang, Menglian Chen, and Mingyang Xu. 2025. "Hybrid Architecture for Tight Sandstone: Automated Mineral Identification and Quantitative Petrology" Minerals 15, no. 9: 962. https://doi.org/10.3390/min15090962

APA Style

Dong, L., Sun, C., Yu, X., Zhang, X., Chen, M., & Xu, M. (2025). Hybrid Architecture for Tight Sandstone: Automated Mineral Identification and Quantitative Petrology. Minerals, 15(9), 962. https://doi.org/10.3390/min15090962

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