A Comparative Study on Fracture Characteristics of the Red Sandstone under Water and Nitrogen Gas Fracturing

<table class="table-group" id="tab9"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Specimen number</td><td class="align_center">Method</td><td class="align_center">Rupture time (s)</td><td class="align_center">Breakdown pressure (MPa)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">G1′</td><td class="align_center">Numerical modeling</td><td class="align_center">9.6</td><td class="align_center">4.80</td></tr><tr><td class="align_left">G2′</td><td class="align_center">Numerical modeling</td><td class="align_center">91.6</td><td class="align_center">4.67</td></tr><tr><td class="align_left">G3′</td><td class="align_center">Numerical modeling</td><td class="align_center">911.8</td><td class="align_center">4.66</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The numerical results of rupture time and breakdown pressure with the nitrogen gas fracturing.</div>

Advances in Civil Engineering

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Table 9

Table 9: A Comparative Study on Fracture Characteristics of the Red Sandstone under Water and Nitrogen Gas Fracturing 