Magnesian clay minerals and their influence on pores in the first member of Middle Permian Maokou Formation, southern Sichuan Basin
Liyu ZHANG, Donghua YOU, Rong LI et al. · 2025 · Shiyou shiyan dizhi
In recent years, multiple wells in the Sichuan Basin have produced industrial gas from the marlstone/marl-bearing limestone strata in the first member of the Middle Permian Maokou Formation (Mao 1), demonstrating promising exploration potential. Previous studies have suggested that the marlstone/marl-bearing limestone in Mao 1 exhibits self-generation and self-storage characteristics, forming low-porosity, low-permeability fracture-porosity type tight carbonate reservoirs with diverse storage spaces. Notably, diagenetic shrinkage pores and fractures formed during the transformation of sepiolit
View details →