What type of energy is shale gas? Is it a bioenergy type?

Shale gas is an unconventional fossil fuel energy source. Shale gas is shale or coal beds containing mechanisms that produce methane during thermal evolution, and shale gas reservoirs are formed when methane is transported, stored in sandstone reservoirs, and aggregated into deposits. Shale gas, like coal bed methane, is an unconventional energy source. Its cause is mainly the thermal evolution of organic matter, of course, there will also be bio-evolutionary gas, just a small proportion.