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ZOU Yongming. Experimental Study on Permeability Increasing Technique with CO2 Phase Transition Fracturing in Coal and Gas Outburst Coal Seam[J]. Safety in Coal Mines, 2018, 49(3): 5-8.
Citation: ZOU Yongming. Experimental Study on Permeability Increasing Technique with CO2 Phase Transition Fracturing in Coal and Gas Outburst Coal Seam[J]. Safety in Coal Mines, 2018, 49(3): 5-8.
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Experimental Study on Permeability Increasing Technique with CO2 Phase Transition Fracturing in Coal and Gas Outburst Coal Seam

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  • Published Date: March 19, 2018
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  • According to the problems of the high gas pressure, the low permeability, the difficult gas pre-drainage at Cheji Coal Mine, the permeability increasing technique tests by CO2 phase transition fracturing were carried out in the Ⅱ2 coal seam. The technical principle of CO2 phase transition fracturing and CO2 phase transition fracturing device were studied, the influence radius testing programs and the gas extraction effect testing programs of CO2 phase transition fracturing technique were designed. The field tests showed that, the radius of influence of CO2 phase transition fracturing test was 4 m, and the average gas extraction flow of the fracturing group was 1.7 times that of the normal extraction group in 15 d.
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    • References (11)
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