A Crack Propagation Control Study of Directional Hydraulic Fracturing Based on Hydraulic Slotting and a Nonuniform Pore Pressure Field

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Category</td><td class="align_center">Density (kg/m<sup>3</sup>)</td><td class="align_center">Tensile strength (MPa)</td><td class="align_center">Compressive strength (MPa)</td><td class="align_center">Poisson’s ratio</td><td class="align_center">Elastic modulus (GPa)</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">Sandstone</td><td class="align_center">2333</td><td class="align_center">4.09</td><td class="align_center">56.4 MPa</td><td class="align_center">0.24</td><td class="align_center">36 GPa</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Physical and mechanical properties of sandstone used in the numerical model.</div>

Geofluids

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Table 1

Table 1: A Crack Propagation Control Study of Directional Hydraulic Fracturing Based on Hydraulic Slotting and a Nonuniform Pore Pressure Field 