Shale gas, are mined from shale gas, is an important unconventional gas resources

Shale gas, are mined from shale gas, is an important unconventional gas resources. The formation and enrichment of shale gas has its unique characteristics, are often distributed in basin large thickness, wide distribution of shale formation hydrocarbon source rock. fracturing proppant to conventional gas, shale gas development has a long service life and long production cycle, most of the gas shale distribution range, thickness, and universal gas, which makes the shale gas well to long-term gas at a steady rate. A state with a free or adsorption hiding in shale and mudstone layer of gas shale gas, unconventional day 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 frac sand companies. Reservoir space is given priority to with cracks, and in the form 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.