Theoretical and Experimental Antiscaling Performance Study of Several Inhibitors to Prevent Barium Sulfate Formation during Water Injection in Oil Reservoirs

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="11"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Brines</td><td class="align_center" rowspan="2">pH</td><td class="align_center" colspan="8">Ion content (mg/L)</td><td class="align_center" rowspan="2">Salinity (mg/L)</td></tr><tr class="thead"><td class="align_center">Ca<sup>2+</sup></td><td class="align_center">Mg<sup>2+</sup></td><td class="align_center">Ba<sup>2+</sup></td><td class="align_center">Na<sup>+</sup></td><td class="align_center">K<sup>+</sup></td><td class="align_center">Cl<sup>-</sup></td><td class="align_center"><span style="width: 34.4423ptpx;"><svg height="14.7403pt" id="M1" style="vertical-align:-3.943601pt" version="1.1" viewbox="-0.0498162 -10.7967 34.4423 14.7403" width="34.4423pt" 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="M729 650H468V622C546 615 554 610 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38 365 43 365 108V177H462ZM284 227H88C155 336 218 430 282 519H284V227Z"></path></g></svg></span></td></tr><tr><td class="thead-hr" colspan="11"><hr/></td></tr><tr><td class="align_left">Q2</td><td class="align_center">7.7</td><td class="align_center">69</td><td class="align_center">94</td><td class="align_center">0</td><td class="align_center">1128</td><td class="align_center">5</td><td class="align_center">703</td><td class="align_center">93</td><td class="align_center">2736</td><td class="align_center">5035</td></tr><tr><td class="align_left">L49-07</td><td class="align_center">7.5</td><td class="align_center">268</td><td class="align_center">814</td><td class="align_center">1221</td><td class="align_center">35015</td><td class="align_center">420</td><td class="align_center">65233</td><td class="align_center">192</td><td class="align_center">0</td><td class="align_center">109415</td></tr><tr class="table-tr"><td colspan="11"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Ionic composition of formation water and injection water.</div>

Geofluids

tab1

Table 1

Table 1: Theoretical and Experimental Antiscaling Performance Study of Several Inhibitors to Prevent Barium Sulfate Formation during Water Injection in Oil Reservoirs 

Table 1 | Theoretical and Experimental Antiscaling Performance Study of Several Inhibitors to Prevent Barium Sulfate Formation during Water Injection in Oil Reservoirs 