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

<table class="table-group" id="tab7"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Well number</td><td class="align_center">Depth (m)</td><td class="align_center">Lithofacies</td><td class="align_center"><span style="width: 26.7265ptpx;"><svg height="14.0539pt" id="M4" style="vertical-align:-5.52892pt" version="1.1" viewbox="-0.0498162 -8.52498 26.7265 14.0539" width="26.7265pt" 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="M46 650V622C120 617 128 613 128 525V125C128 42 120 34 40 28V0H311V28C221 34 212 39 212 124V281L286 262C297 261 316 261 331 263C429 275 526 338 526 468C526 533 501 579 462 609C422 638 364 650 293 650H46ZM212 559C212 588 215 600 223 606C230 613 251 618 279 618C361 618 430 572 430 464C430 337 350 302 285 302C252 302 225 309 212 314V559Z"></path></g><g transform="matrix(.013,0,0,-0.013,7.346,0)"><path d="M687 650H462V622C543 612 549 605 530 547C498 447 422 252 372 126H370C302 298 229 492 204 563C188 607 191 615 262 622V650H17V622C77 616 93 608 122 534C180 389 262 172 329 -11H360C436 196 541 450 568 516C606 605 619 614 687 622V650Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,16.52,3.132)"><path d="M135 536C164 536 186 560 186 587C186 617 164 639 136 639C109 639 85 617 85 587C85 560 109 536 135 536ZM252 0V26C188 32 181 38 181 106V451C138 433 90 420 39 412V388C99 379 102 374 102 312V106C102 38 95 32 32 26V0H252Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,18.958,3.132)"><path d="M524 0V26C466 32 460 36 460 104V297C460 393 411 449 331 449C302 449 276 437 248 419C223 402 201 387 181 372V451C137 432 90 420 42 411V388C96 378 102 374 102 310V104C102 38 97 33 29 26V0H246V26C187 32 181 36 181 104V339C211 365 250 390 290 390C357 390 381 345 381 276V109C381 40 374 32 315 26V0H524Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,23.763,3.132)"><path d="M135 536C163 536 185 560 185 587C185 617 163 639 136 639C108 639 85 617 85 587C85 560 108 536 135 536ZM34 389C96 380 101 376 101 308V113C101 22 99 -37 93 -80C87 -114 80 -137 68 -152C54 -170 28 -182 -5 -190C-19 -193 -26 -200 -26 -213C-26 -237 -3 -257 10 -257C18 -257 26 -253 36 -246C59 -226 122 -150 157 -50C176 3 180 46 180 111V451C137 433 86 420 34 412V389Z"></path></g></svg></span></td><td class="align_center">Initial permeability (mD)</td><td class="align_center">Final permeability (mD)</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">16-1</td><td class="align_center">2041</td><td class="align_center">Fine sandstone facies</td><td class="align_center">60</td><td class="align_center">379</td><td class="align_center">2548.775</td></tr><tr><td class="align_left">16-1</td><td class="align_center">2048</td><td class="align_center">Middle sandstone facies</td><td class="align_center">60</td><td class="align_center">1034</td><td class="align_center">6152.3</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Results of core water flooding experiment.</div>

Geofluids

tab7

Table 7

Table 7: Numerical Simulation of Time-Varying Characteristics in a High-Permeability Sandstone Reservoir: A Case of Gaoqian Southern Area 