Experimental Study of Volumetric Fracturing Properties for Shale under Different Stress States

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/6650710/figures/6650710.fig.0013a.svgz" name="6650710.fig.0013a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Sketch map of fracing model</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/6650710/figures/6650710.fig.0013b.svgz" name="6650710.fig.0013b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Loading-unloading paths and wellbore pressure versus fracing time</td></tr><tr class="fig-image" id="c"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/6650710/figures/6650710.fig.0013c.svgz" name="6650710.fig.0013c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Fracing model after hydraulic fracture</td></tr><tr class="fig-image" id="d"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/6650710/figures/6650710.fig.0013d.svgz" name="6650710.fig.0013d" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(d) </b>Main rupture surface</td></tr></table>

<div>Loading-unloading paths and failure patterns for specimen #B-2.</div>

Geofluids

fig13

Figure 13

Figure 13: Experimental Study of Volumetric Fracturing Properties for Shale under Different Stress States 