Shale gas is generated

Shale gas is mined out from shale gas , shale or body located in dark carbon shale , the  maide Shale gas revolution is adsorbed on the body in order to exist in the free state or mudstone, carbon mudstone , shale and pink sandwich on sandy rocks in natural gas, which can be generated in various stages of organic origin of natural gas subject to the free phase ( about 50% ) present in the cracks , porosity and other reservoir space to adsorption state ( about 50% ) present in kerogen , clay particles and pore surface , a very small amount is stored in a dissolved state kerogen , asphaltenes and petroleum . Natural gas is also present in siltstone , silty mudstone , muddy siltstone sandwich -like , or even sandstone formations . After the gas generated in the source rock gathered nearby , the performance of a typical
Shale gas
Situ accumulation mode and differential oil shale, oil sands, bitumen and other large . Different from conventional reservoirs and gas reservoirs , maide gas fracking  generated by both the source rock is gathered and stored gas reservoir and cap rock . Therefore , the high organic content of black shale , mudstone carbon is often the best conditions for the development of shale gas .
Shale gas development has extensive geological significance , present in almost all of the basin , just because burial depth , gas saturation and other big difference with different industrial value , respectively . Fractured shale gas Chinese traditional sense , shale oil and gas reservoirs , fractured shale reservoirs , fractured reservoirs , etc. This is quite roughly , but did not consider the mechanism of adsorption is not considered one of the primary attributes of natural gas and understanding of the body is gathered in the cracks in the shale oil and gas in free phase . Shale gas is not complete and therefore belongs sense. Therefore , China 's fractured shale reservoirs concept and connotation of shale gas in the United States today are not the same , namely, the material content of hydrocarbons , storage phase , there is a big difference between the source characteristics and chemical composition and other aspects .