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

<table class="table-group" id="tab8"><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">W1′</td><td class="align_center">Numerical modeling</td><td class="align_center">15.8</td><td class="align_center">8.6</td></tr><tr><td class="align_left">W2′</td><td class="align_center">Numerical modeling</td><td class="align_center">135</td><td class="align_center">6.8</td></tr><tr><td class="align_left">W3′</td><td class="align_center">Numerical modeling</td><td class="align_center">1053</td><td class="align_center">5.36</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 water fracturing.</div>

Advances in Civil Engineering

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Table 8

Table 8: A Comparative Study on Fracture Characteristics of the Red Sandstone under Water and Nitrogen Gas Fracturing 