Compared to other hydraulic fracturing schemes

Supercritical carbon dioxide fracturing hardly causes damage to the reservoir, and all fractures are basically effective cracks. Although 20% to 85% of methane gas exists in an adsorbed state, the pulverizer cannot separate it, but supercritical carbon dioxide can replace the methane gas adsorbed on the parent rock by its own superabsorbent force, and directly increase the natural gas. Or the production of coalbed methane and the partial storage of carbon dioxide. At the same time, with its own energy-enhancing effect, after the pressure is released, the supercritical carbon dioxide can be rapidly vaporized and expanded, and the complete well washing and discharging can be quickly realized within 1 to 4 hours, which is convenient for the operator to evaluate the reservoir productivity in time.