America's shale gas revolution alters its energy development, and also impacts the global energy pattern. This paper, based on its development and impacts of shale gas revolution, uses a quantitative model to reveal if it brings an impact on the natural gas markets of North America, Europe and Japan. On the basis of monthly data of 1988 June to 2018 May, BP breakpoint test model which structural mutation is adapted on the traditional unit root is used to analyze its characters of America's shale gas developing stages combined with related policies. Impulse response and variance is employed to study their correlation of the three big global gas markets before and after shale gas revolution. Sequence segmentation and industrial status of natural gas suggests the process and mechanism of America's shale gas revolution on global natural gas market. It is concluded that America's shale gas revolution raises its influence of American-European natural gas price on Asian market or even the global market.

This paper uses Nolte-Smith net double logarithmic pressure-time curve, combined with in-situ operating curve changes, to establish 8 types of hydraulic-fracturing sanding curve, which are employed to study the fracturing curves in 230 beds in 120 wells in Zhengzhuang well field and the deep coal reservoir fracturing effect, aiming at offering references for fracturing design, adjusting operating parameters. Type NS-III-3 (interlayered end-desanding and halt-sanding-return-discharging process) and NS-IV-3 (object layer sub-layer pressure discharging process) are the premium fracturing curves of deep low-permeable coal reservoir in Zhengzhuang well field. Fracturing net pressure works on the original coal fissures, with fissures opened to connect coal sub-layers; then franc sand and fracturing liquid move to the interfaces of coal reservoir sub-layers along its original fissures. Medium-low permeable “sweet spot” areas exist in the deep coal reservoir, which may be considered as a supplement.