Tight sandstone reservoirs typically contain a wide pore throat sizes ranging from the nano-
scale to micro-scale, and have complex pore geometry and pore throat structure …

The tight sandstones are characterized by low porosity, low permeability, complex pore
structure and strong heterogeneity due to the extensive diagenetic modifications they …

Diagenesis exerts a strong control on the quality and heterogeneity of most clastic
reservoirs. Variations in the distribution of diagenetic alterations usually accentuate the …

Compared to conventional reservoirs, pore structure and diagenetic alterations of
unconventional tight sand oil reservoirs are highly heterogeneous. The Upper Triassic …

We emphasize the importance of marine silicate weathering (MSiW) reactions in anoxic
sediment as fundamental in generating alkalinity and cations needed for carbonate …

The Eocene sandstones in the northern Dongying Sag, Bohai Bay Basin, China, are
reservoirs for large accumulations of hydrocarbons. The sandstones are mainly lithic …

The Upper Cretaceous Mesaverde Group in the Piceance Basin, western Colorado,
contains thick sections of low porosity, low permeability sandstones that are reservoirs for …

Authigenic clays and calcite cements are important in the development of reservoir tightness
and the formation of hydrocarbon sweet spots. We investigated Jurassic low-permeability …

Abstract During the Upper Paleozoic large-scale tight sandstone oil and gas reservoirs
developed in the southern Ordos Basin of China. Due to the heterogeneity of sedimentary …

Reservoir quality is the key parameter controlling shale oil enrichment. However, the
complicated lithofacies, which control diagenesis, result in reservoir heterogeneity in the …