Unconventional oil and gas resources of what is meant by unconventional energy, what does

Hou Jie reading explains: " Unconventional gas  sources including shale gas, coalbed methane, shale oil, tight sandstone gas, gas hydrates, and heavy oil resources, etc. which has developed the most valuable are: shale gas, coalbed methane, tight sandstone gas and heavy oil resources in our country, for tight sands and heavy oil and gas resource development practices earlier, followed by coal bed methane,  shale gas  is then. "Hou Jie read it several more were introduced with the development of unconventional value oil and gas resources advantage. Such as the advantages of tight sandstone gas exploration past low level of remaining resources more; while heavy oil resources are wins in the development and application of technology is relatively mature, resource capacity, a broad field of application, except as an energy source and chemical raw materials, but also for road traffic and building an important raw material; while mainly in the mining area of   coalbed methane, and its advantage is that the current low level of exploration, the remaining of resources, construction speed, CBM and also reduces the production of coal mine safety problems .