The Calculation of Coal Rock Fracture Conductivity with Different Arrangements of Proppants

<table class="fixed-width table-group" id="tab1"><tr><td><table class="table"><colgroup><col style="width:7.41em"/><col style="width:7.41em"/><col style="width:7.41em"/><col style="width:7.41em"/><col style="width:7.41em"/><col style="width:7.41em"/><col style="width:7.41em"/><col style="width:5.74em"/><col style="width:5.74em"/></colgroup><tr><td class="thead-hr" colspan="9"><hr/></td></tr><tr class="thead"><td class="align_left">Concentration of proppant (kg·m<sup>−2</sup>)</td><td class="align_center">Diameter of proppant (m)</td><td class="align_center">Closure pressure (MPa)</td><td class="align_center">Elastic modulus of proppant (GPa)</td><td class="align_center">Poisson’s ratio of proppant</td><td class="align_center">Elastic modulus of coal rock (GPa)</td><td class="align_center">Poisson’s ratio of coal rock</td><td class="align_center">Height of fracture (m)</td><td class="align_center">Length of fracture (m)</td></tr><tr><td class="thead-hr" colspan="9"><hr/></td></tr><tr><td class="align_left">10</td><td class="align_center">6.106×10<sup>−4</sup></td><td class="align_center">10~30</td><td class="align_center">20.338</td><td class="align_center">0.142</td><td class="align_center">1.205</td><td class="align_center">0.221</td><td class="align_center">0.0381</td><td class="align_center">0.127</td></tr><tr class="table-tr"><td colspan="9"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Experimental parameters of coal rock and proppant.</div>

Geofluids

tab1

Table 1

Table 1: The Calculation of Coal Rock Fracture Conductivity with Different Arrangements of Proppants 