Differential diagenetic and densification processes of low-permeability and tight sandstones: A case study of the Jurassic Shaximiao Formation in the central and western Sichuan Basin, China

• Published in: Journal of Asian Earth Sciences: X Vol. 13; p. 100190
• Main Authors: Cai, Laixing, Yuan, Chengfang, Zhang, Shaomin, Wang, Xiaojuan, Liu, Yinglin, Guo, Weixue, Yang, Tian
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.06.2025; Elsevier
• Subjects: Densification processes; Diagenetic event; Differential evolution; Reservoir quality; Shaximiao Formation, Sichuan Basin; Differential evolution; Densification processes; Reservoir quality; Diagenetic event; Shaximiao Formation, Sichuan Basin

•The content of larger pore-throats governs the reservoir quality and causes significant permeability heterogeneity.•Continuous compaction and various cementations lead to reservoir densification.•Chlorite coatings and secondary dissolution can help identify favorable reservoirs. Tight sandstone res...