Effect of pore-throat structure on movable fluid and gas–water seepage in tight sandstone from the southeastern Ordos Basin, China

• Published in: Scientific reports Vol. 15; no. 1; pp. 7714 - 29
• Main Authors: Chang, Bin, Tong, Qiang, Cao, Cheng, Zhang, Yunde
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 05.03.2025; Nature Publishing Group; Nature Portfolio
• Subjects: 639/4077/4082/4090; 704/2151/2809; Core analysis; Development strategies; Fluid flow; Fractal dimension; Fractals; Gas–water relative permeability; Heterogeneity; Humanities and Social Sciences; Membrane permeability; multidisciplinary; Multiphase flow; NMR; Nuclear magnetic resonance; Oil and gas fields; Ordos Basin; Paleozoic; Permeability; Petrography; Pore-throat structure; Reservoir management; Sandstone; Science; Science (multidisciplinary); Tight sandstone gas reservoirs; Water seepage; Ordos Basin; China; Gas–water relative permeability; Tight sandstone gas reservoirs; Ordos Basin; Fractal dimension; Pore-throat structure

This study investigates the micro-pore-throat structure of Upper Paleozoic tight sandstone gas reservoirs in the southeastern Ordos Basin, China, with a focus on the Yan'an gas field. The aim is to analyze the micro-pore-throat characteristics and their influence on fluid seepage to optimize ga...