Diagenesis and petrophysics of Miocene sandstones within southern Apennines foreland, Italy

Diagenetic Controls on Tight Sandstone Reservoir Quality: A Case Study from the Huaqing Oilfield, Ordos Basin

“…With the rise of unconventional hydrocarbon production techniques, tight sandstone reservoirs have gradually become a target for exploration and development particularly in mature hydrocarbon provinces or basins with less conventionally producible resources. − Tight oil and gas resources are found in many basins in China such as the Ordos, Songliao, and Bohai basins, with good exploration results recently. − Compared with traditional reservoirs, tight sandstone reservoirs are characterized by lower porosity and exceptionally low permeability, which is less than 1 mD . Their pore structure is often highly complex and affected by diagenetic overprint (e.g., cementation), − which poses great challenges to reservoir development. , Therefore, it is of great significance to accurately delineate diagenetic facies types in tight sandstone reservoirs emphasizing the influence on chemical diagenesis on reservoir quality. , …”