A device and method for combined hydraulic fracturing and microwave radiation to enhance the extraction of coal seam gas
A technology of microwave radiation and hydraulic fracturing, applied in the direction of gas discharge, safety devices, mining fluids, etc., can solve the problems of difficult desorption of coal seam gas, low gas permeability of coal seam, low gas extraction rate, etc., achieve simple process, improve desorption Efficiency, the effect of improving extraction efficiency
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[0024] The special device of the present invention includes: the device includes: water pump 1, water tank 2, hydraulic fracturing port valve 3, microwave radiation monitoring port 4, microwave radiator 5, microwave radiation monitoring port valve 6, gas extraction port valve 7, gas pumping Production port 8, monitoring equipment 9, cementing section 10, signal transmission line 11, casing 12, waveguide 13, ground drilling 14, sensor 15, microwave radiation antenna 16, microwave radiation window 17, high-strength non-metallic screen pipe 18, Hydraulic fracturing opening 19, waveguide valve 20, gas extraction pump 21 and gas extraction pipe 22; the upper end of the surface drilling 14 is the cementing section 10, and there is a casing 12 inside the surface drilling 14, and the lower end of the casing 12 is There is a high-strength non-metallic screen tube 18, and the upper part of the casing 12 has a hydraulic fracturing port 19, a gas drainage port 8, and a microwave radiation ...
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