Multiscale microscopic pore structure characterization and storage–flow coupling mechanisms in ultra-low permeability tight sandstone reservoirs

Abstract This study investigates the Chang 4 + 5 ultra-low permeability reservoirs in the Jiyuan area of the Ordos Basin using integrated thin-section analysis, SEM, XRD, nitrogen adsorption, high-pressure mercury intrusion, NMR, and micro-CT techniques. By calibrating NMR with adsorption–intrusion...

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Autori principali:	Cun-Lei Li, Dong-Rui Su, Pan-Pan Chen, Tuan-Tuan Qu, Cheng-Ming Wang, Cheng-Chi Wang
Natura:	Artigo
Lingua:	Inglês
Pubblicazione:	Nature Portfolio 2026-03-01
Serie:	Scientific Reports
Soggetti:	Ultra-low permeability reservoir Microscopic pore structure Diagenetic controls Pore-throat system connectivity Seepage and flow behaviors
Accesso online:	https://doi.org/10.1038/s41598-026-42495-y
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