Experimental Study on Optimization of Polymer Preslug Viscosity of ASP Flooding in Interlayer Heterogeneous Well Group Artificial Sandstone Core

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Scheme</td><td class="align_center">Preslug viscosity<br/>mPa·s</td><td class="align_center">Recovery degree by water flooding<br/>%</td><td class="align_center">Enhancement by chemical flooding<br/>%</td><td class="align_center">Total recovery degree<br/>%</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">1</td><td class="align_center">40</td><td class="align_center">35.12</td><td class="align_center">18.02</td><td class="align_center">53.14</td></tr><tr><td class="align_left">2</td><td class="align_center">60</td><td class="align_center">35.44</td><td class="align_center">19.35</td><td class="align_center">54.79</td></tr><tr><td class="align_left">3</td><td class="align_center">80</td><td class="align_center">35.5</td><td class="align_center">18.74</td><td class="align_center">54.24</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Recovery degree of different polymer preslug viscosity.</div>

Geofluids

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Table 5

Table 5: Experimental Study on Optimization of Polymer Preslug Viscosity of ASP Flooding in Interlayer Heterogeneous Well Group Artificial Sandstone Core 

Table 5 | Experimental Study on Optimization of Polymer Preslug Viscosity of ASP Flooding in Interlayer Heterogeneous Well Group Artificial Sandstone Core 