Cocompetitive Characteristics and Quantitative Design of Engineering Parameters for Coal Gas Predrainage Boreholes

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2022/5943321/figures/5943321.fig.001a.svgz" name="5943321.fig.001a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Single drilling</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2022/5943321/figures/5943321.fig.001b.svgz" name="5943321.fig.001b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Adjacent drilling</td></tr></table>

<div>Evolution diagram of residual gas content around single and double boreholes [<a href="/journals/geofluids/2022/5943321/#B25">25</a>].</div>

Geofluids

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Figure 1

Figure 1: Cocompetitive Characteristics and Quantitative Design of Engineering Parameters for Coal Gas Predrainage Boreholes 