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

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">No.</td><td class="align_center">Agents</td><td class="align_center">Mass concentration g/L</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">1</td><td class="align_center">NaCl</td><td class="align_center">3.977</td></tr><tr><td class="align_left">2</td><td class="align_center">CaCl<sub>2</sub></td><td class="align_center">0.028</td></tr><tr><td class="align_left">3</td><td class="align_center">MgCl<sub>2</sub>·6H<sub>2</sub>O</td><td class="align_center">0.046</td></tr><tr><td class="align_left">4</td><td class="align_center">Na<sub>2</sub>SO<sub>4</sub></td><td class="align_center">0.093</td></tr><tr><td class="align_left">5</td><td class="align_center">NaHCO<sub>3</sub></td><td class="align_center">2.634</td></tr><tr><td class="align_center" colspan="2">Total salinity</td><td class="align_center">6.778</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Geofluids

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Table 4

Table 4: Experimental Study on Optimization of Polymer Preslug Viscosity of ASP Flooding in Interlayer Heterogeneous Well Group Artificial Sandstone Core 

Table 4 | Experimental Study on Optimization of Polymer Preslug Viscosity of ASP Flooding in Interlayer Heterogeneous Well Group Artificial Sandstone Core 