The Time-Varying Variation Characteristics of Methane during Nitrogen Injection Process: An Experimental Study on Bituminous Coals

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td class="align_left">Code</td><td class="align_center">Displacement pressure (MPa)</td><td class="align_center">Sample size (mm)</td><td class="align_center">CH<sub>4</sub> adsorption pressure (MPa)</td><td class="align_center">Confining pressure (MPa)</td><td class="align_center">Axial pressure (MPa)</td><td class="align_center">Temperature (°C)</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left">1</td><td class="align_center">0.5</td><td class="align_center"><span style="width: 38.6238ptpx;"><svg height="8.69875pt" id="M2" style="vertical-align:-0.3499298pt" version="1.1" viewbox="-0.0498162 -8.34882 38.6238 8.69875" width="38.6238pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M412 140C382 77 369 73 315 73H129L270 222C362 320 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<div>Experimental parameters of CH<sub>4</sub> displacement by N<sub>2</sub>.</div>

Geofluids

tab1

Table 1

Table 1: The Time-Varying Variation Characteristics of Methane during Nitrogen Injection Process: An Experimental Study on Bituminous Coals 