The Role of Microfabric and Laminae on Pore Structure and Gas Transport Pathways of Marine Shales from Sichuan Basin, China

<div>The crossplot of Klinkenberg-corrected permeability versus porosity along with the lines based on the Winland equation [<a href="/journals/geofluids/2020/8844229/#B59">59</a>] for different values of <span class="nowrap"><svg height="11.439pt" id="M71" style="vertical-align:-5.3737pt" version="1.1" viewbox="-0.0498162 -6.0653 21.5031 11.439" width="21.5031pt" 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="M422 431C411 443 392 454 370 454C321 454 263 368 219 295H214L223 337C242 422 231 454 202 454C161 454 88 406 26 350L41 318C59 334 99 354 107 354C116 354 114 338 107 302C87 198 66 95 41 -4L49 -12C78 -4 129 5 169 9C177 62 196 155 207 207C212 225 238 269 265 306C287 336 301 338 312 338C326 338 344 331 358 318C362 314 374 314 384 323C396 334 406 348 419 368C433 390 435 417 422 431Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,5.898,3.132)"><path d="M607 293C607 404 553 457 443 457C407 457 387 456 348 448L366 523L354 532C314 517 252 484 228 458L217 419C184 408 144 391 110 369L122 333C146 345 173 356 204 366L106 -115C94 -173 75 -187 17 -196L9 -237L300 -224L308 -184L291 -183C235 -180 221 -171 232 -117L255 -3C278 -10 292 -12 315 -12C385 4 443 33 516 102C579 162 607 239 607 293ZM467 292C467 184 389 41 325 41C312 41 283 58 272 72L335 392C347 395 361 398 381 398C425 398 467 380 467 292Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,11.643,3.132)"><path d="M310 382C345 404 366 417 384 433C404 450 417 474 417 501C417 578 357 635 252 635H251C184 635 135 603 107 572L57 506L86 478C122 527 156 554 205 554C250 554 290 528 290 467S227 367 144 340L151 300C168 304 190 308 208 308C260 308 327 275 327 181C327 89 288 49 238 49C177 49 131 93 109 111C95 122 82 119 70 110C57 100 40 82 40 63C40 48 48 34 65 21C86 4 126 -12 177 -12C240 -12 460 60 460 222C460 298 409 363 310 380V382Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,16.257,3.132)"><path d="M159 513H412L444 612L437 623H116L70 300C91 306 135 319 182 319C273 319 330 262 330 174C330 104 300 49 239 49C181 49 132 89 108 110C95 122 83 124 72 115C52 102 38 78 38 62C38 47 42 36 64 20C87 2 130 -12 169 -12C230 -11 302 15 358 54C429 104 461 163 461 226C461 313 387 395 258 395C232 395 179 382 132 364L159 513Z"></path></g></svg>.</span></div>

Geofluids

fig17

Figure 17

Figure 17: The Role of Microfabric and Laminae on Pore Structure and Gas Transport Pathways of Marine Shales from Sichuan Basin, China 