Dynamic response mechanism of borehole breathing in fractured formations

Special issue “New advancements and challenges in unconventional reservoirs”

“…To make real progress, new efforts are required to integrate drilling and completion, reservoir characterization, IOR/EOR/EGR, simulation and modelling, experimental methods, big data and artificial intelligence. This Special Issue collects 11 invited to research and review papers in terms of shale oil (Lu et al, 2022;Zhao et al, 2022b;Huang et al, 2022), shale gas (Yang et al, 2022;Jiang et al, 2021;Alhamad et al, 2022), tight gas (Alanazi et al, 2022), and hydrogen (Zhou et al, 2022) which brings together worldwide experts from university, research institute, and petroleum industry. These articles address key scientific and engineering issues in hydraulic fracturing, fluid transport mechanisms, rock mechanics, wettability characterization, surfactant treatment, and sweet pot identification.…”

“…Yu et al (2022) establish a ''six determination'' exploration workflow for continental shale oil, including determining the background, source rock, reservoir, play, resources, and sweet spot, which provides a good reference for the exploration of the same type of shale system. Based on the Cohesive unit method, Yang et al (2022) breathing are discussed. Alhamad et al (2022) introduce a hazardous pollutant ''methyl orange (MO)'' to alter the wettability of sandstone formation, which belongs to the chemically enhanced oil recovery methods.…”