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LIANG Wenxu. Experimental Study on Point Hydraulic Fracturing in Low Permeability Coal Seam[J]. Safety in Coal Mines, 2017, 48(6): 44-47,51.
Citation: LIANG Wenxu. Experimental Study on Point Hydraulic Fracturing in Low Permeability Coal Seam[J]. Safety in Coal Mines, 2017, 48(6): 44-47,51.
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Experimental Study on Point Hydraulic Fracturing in Low Permeability Coal Seam

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  • Published Date: June 19, 2017
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    • Abstract
  • In view of the problems of low permeability of coal seam and low efficiency of gas drainage, the hydraulic fracturing test is carried out. Numerical simulation software is used to simulate the initiation pressure and crack growth of single hole and three holes. Based on the numerical simulation results, the process parameters of hydraulic fracturing field test are determined, and the fracturing test is carried out by using the point hydraulic fracturing device. The experimental results after fracturing show that the permeability coefficient of the coal seam, the gas quantity of single hole and the extraction concentration are respectively 18.9 times, 2 times and 2 times than that of before fracturing.
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    • References (11)
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