Numerical Simulation of Time-Varying Characteristics in a High-Permeability Sandstone Reservoir: A Case of Gaoqian Southern Area

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Lithofacies</td><td class="align_center" colspan="2">Free period</td><td class="align_center" colspan="2">Extra high water cut stage</td><td class="align_center" colspan="2">Multiple</td></tr><tr class="thead"><td class="align_center">Por (%)</td><td class="align_center">Perm (mD)</td><td class="align_center">Por (%)</td><td class="align_center">Perm (mD)</td><td class="align_center">Por</td><td class="align_center">Perm</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left">Fine sandstone facies</td><td class="align_center">21.6</td><td class="align_center">363</td><td class="align_center">29.4</td><td class="align_center">2453</td><td class="align_center">1.36</td><td class="align_center">6.8</td></tr><tr><td class="align_left">Middle sandstone facies</td><td class="align_center">26.1</td><td class="align_center">1189</td><td class="align_center">32</td><td class="align_center">4140</td><td class="align_center">1.23</td><td class="align_center">3.5</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Changes in porosity and permeability before and after water flooding.</div>

Geofluids

tab5

Table 5

Table 5: Numerical Simulation of Time-Varying Characteristics in a High-Permeability Sandstone Reservoir: A Case of Gaoqian Southern Area 