Shale gas is unconventional natural gas stored in shale in free or absorbed form,and sometimes in free fluid phase.The exploitation of shale gas has become a promising field of green energy development in China.Although great success has been achieved in shale gas revolution in North America with the technique of hydraulic fracturing,only 5~15% of the stored oil and gas could be exploited.In order to improve the production of shale oil and gas,a huge challenge accompanied with great opportunities is present...