Shale gas, a state with a free or adsorption hiding in unconventional gas in shale and mudstone layer

Shale gas, a state with a free or adsorption hiding in unconventional gas in shale and mudstone layer, is becoming a stirring power in the world market. This is the international energy industry is called "game changer" gas, greatly changed the pattern of energy of the world. Especially occurs in unconventional gas in shale. Shale is dense rock, so it can also be classified as dense atmosphere. Industrial development success only for North America (mainly the United States). It began in the Appalachian basin of devonian system shale, as the dark brown or black, rich organic matter, but a lot of angry. Reservoir space is given priority to with cracks, and in the frac sand of adsorbed gas and water soluble gas occurrence, for low (negative) pressure, low saturation (30%), and thus provide sustainable. But in the fracture development zone, to obtain the higher yields underground explosions and fracturing renovation measures such as protection results. In the mid - 1990 - s has been expanded to Michigan and Illinois basin, the reservoir and expand to the carboniferous shale, output of 8.4 billion cubic meters. The resource of trillions of cubic meters. Sinopec in guizhou east, southern anhui, 7 5 appraisal well in northeast sichuan, including industrial air 2 Wells, optimizing the building fracturing proppant and huang ping blocks south. Cnooc in anhui and zhejiang and other regions to carry out the shale gas exploration in the early stage of the work. Extension of the oil in 3 Wells in yan 'an region of shaanxi province continental shale gas discovery. Zhonglian proposes ShouYang coal in shanxi qinshui basin, qinyuan and jincheng three areas favorable for shale gas. In November 2012, the national support for shale gas development and utilization of subsidy policy, regulations over the next three years the central fiscal subsidies for shale gas companies to give subsidies standard is 0.4 yuan/cubic meter. Subsidy standard come on stage will stimulate the shale gas frac sand companies demand, help industry development to speed up the progress.