Experimental Study of Enhancing Oil Recovery with Weak Base Alkaline/Surfactant/Polymer

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="8"><hr/></td></tr><tr class="thead"><td class="align_left">Ion</td><td class="align_center">K<sup>+</sup> + Na<sup>+</sup></td><td class="align_center">Mg<sup>2+</sup></td><td class="align_center">Ca<sup>2+</sup></td><td class="align_center">Cl<sup>−</sup></td><td class="align_center"><span style="width: 31.5059ptpx;"><svg height="14.7729pt" id="M1" style="vertical-align:-3.181499pt" version="1.1" viewbox="-0.0498162 -11.5914 31.5059 14.7729" width="31.5059pt" 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="M409 504C401 567 396 607 392 642C354 654 312 665 266 665C137 665 60 583 60 487C60 374 161 325 225 290C300 250 355 215 355 141C355 68 311 21 235 21C131 21 86 122 71 183L41 176C48 128 61 42 68 21C78 16 93 8 118 0C142 -7 175 -15 216 -15C349 -15 438 69 438 174C438 287 344 333 265 374C186 414 138 449 138 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389 502C389 578 329 635 238 635H237C184 635 137 610 109 578L64 515L88 493C112 529 154 573 208 573S303 542 303 482C303 409 233 370 141 341L149 308C165 313 190 319 215 319C272 319 341 283 341 193C342 98 292 43 222 43C163 43 122 72 96 94C88 101 79 100 70 94C61 87 47 73 46 60C44 47 48 37 62 23C76 10 118 -12 165 -12C238 -12 430 62 430 223C430 297 379 359 290 375V377Z" id="g50-52"></path></g><g transform="matrix(.0091,0,0,-0.0091,23.463,-5.741)"><path d="M414 144C384 79 371 75 317 75H135L276 221C367 316 408 376 408 465C408 570 327 635 237 635C179 635 131 609 100 575L42 494L67 471C94 510 138 565 205 565C277 565 321 517 321 435C321 348 258 270 195 195C146 137 88 81 33 26V0H411C423 44 433 88 446 135L414 144Z" id="g50-51"></path></g><g transform="matrix(.0091,0,0,-0.0091,27.894,-5.741)"><path d="M556 236V289H56V236H556Z" id="g54-33"></path></g></svg></span></td></tr><tr><td class="thead-hr" colspan="8"><hr/></td></tr><tr><td class="align_left">Concentration, mg/L</td><td class="align_center">2043</td><td class="align_center">36</td><td class="align_center">39</td><td class="align_center">1337</td><td class="align_center">10</td><td class="align_center">3126</td><td class="align_center">135</td></tr><tr class="table-tr"><td colspan="8"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

International Journal of Polymer Science

tab2

Table 2

Table 2: Experimental Study of Enhancing Oil Recovery with Weak Base Alkaline/Surfactant/Polymer 