Abstract: Lower Silurian Longmaxi and Upper Ordovician Wufeng shales are gas-producing formations. These formations have ultralow porosity and permeability in the southeastern Sichuan Basin and have normal formation pressures with ...

Abstract: Hydraulic fracturing is extensively applied as an effective stimulation technology to enhance coalbed methane recovery. Coal strength and permeability play critical roles in the performance of hydraulic fracturing, and ...