Mechanism of gas flooding enhanced oil recovery in ultra-low permeability tight oil reservoirs
The effective development of ultra-low permeability tight oil reservoirs (permeability < 0.1 mD) represents a major challenge in China's unconventional oil and gas sector. This study focuses on the Chang-7 tight sandstone formation in the Changqing Oilfield and systematically investigates the adsorption–transport behav...