Pore structure alteration and permeability enhancement of shale under cyclic thermal impacts

Cyclic thermal impact technology can effectively modify shale reservoirs and improve reservoir fracture networks while removing water phase traps to increase shale gas permeability. Therefore, an experiment on the cyclic thermal impacts of shale was conducted to investigate the alteration of pore structure and permeability of shale before and after cyclic thermal impacts. The results indicated that, under the thermal impact temperature of 300...