{"id":55072,"date":"2022-09-06T07:00:07","date_gmt":"2022-09-05T23:00:07","guid":{"rendered":"http:\/\/learncmg.cn\/?p=55072"},"modified":"2022-09-06T07:00:07","modified_gmt":"2022-09-05T23:00:07","slug":"154-%e5%9c%a8%e6%8f%90%e9%ab%98%e9%87%87%e6%94%b6%e7%8e%87%e8%bf%87%e7%a8%8b%e4%b8%ad%e9%80%9a%e8%bf%87%e4%bd%8e%e7%9f%bf%e5%8c%96%e5%ba%a6%e6%b0%b4%e5%90%8e%e5%86%b2%e5%88%b7%e5%a2%9e%e5%bc%ba","status":"publish","type":"post","link":"http:\/\/learncmg.cn\/?p=55072","title":{"rendered":"154. \u4f4e\u77ff\u5316\u5ea6\u6c34\u540e\u51b2\u5237\u589e\u5f3a\u8868\u9762\u6d3b\u6027\u5242\u89e3\u5438\u80fd\u529b\u63d0\u9ad8\u91c7\u6536\u7387\u6a21\u62df"},"content":{"rendered":"<h2 style=\"text-align: center;\"><a href=\"https:\/\/ogst.ifpenergiesnouvelles.fr\/articles\/ogst\/pdf\/2021\/01\/ogst210129.pdf\">Enhancing surfactant desorption through low salinity water post-flush during Enhanced Oil Recovery<\/a><\/h2>\n<h2 style=\"text-align: center;\">\u5728\u63d0\u9ad8\u91c7\u6536\u7387\u8fc7\u7a0b\u4e2d\u901a\u8fc7\u4f4e\u77ff\u5316\u5ea6\u6c34\u540e\u51b2\u5237\u589e\u5f3a\u8868\u9762\u6d3b\u6027\u5242\u89e3\u5438\u7814\u7a76<\/h2>\n<p><strong>Abstract. <\/strong><br \/>\nLow Salinity Water (LSW) incorporates in surfactant Enhanced Oil Recovery (EOR) as a pre-flush is a common practice aiming to reduce the formation salinity, which affects surfactant adsorption. However, in a field implementation, the adsorption of surfactant is unavoidable, so creating a scheme that detaches the trapped surfactant is equally essential. In this study, LSW was a candidate to enhance the desorption of surfactant. LSW solely formulated from NaCl (1 wt.%), Sodium Dodecylbenzene Sulfonate (SDBS) was chosen as the primary surfactant at its critical micelle concentration (CMC, 0.1 wt.%).<br \/>\nIt found that injecting LSW as post-flush achieved up to 71.7% of SDBS desorption that lower interfacial tension against oil (31.06 API) to 1.3 mN\/m hence bring the total Recovery Factor (RF) to 56.1%. It was 4.9% higher than when LSW injecting as pre-flush and 5.2% greater than conventional surfactant flooding (without LSW). Chemical analysis unveiled salinity reduction induces Na+ ion adsorption substitution onto pore surface resulting in an increment in surfactant desorption. The study was further conducted in a numerical simulation upon history matched with core-flood data reported previously. By introducing LSW in post-flush after SDBS injection, up to 5.6% RF increased in comparison to other schemes. The proposed scheme resolved the problems of adsorbed surfactant after EOR, and further improve the economic viability of surfactant EOR.<br \/>\n<img class=\"wp-image-55073 aligncenter\" src=\"http:\/\/learncmg.cn\/wp-content\/uploads\/2022\/08\/unnamed-file-6.png\" alt=\"\u56fe\u8868\n\u4f4e\u53ef\u4fe1\u5ea6\u63cf\u8ff0\u5df2\u81ea\u52a8\u751f\u6210\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Enhancing surfactant desorption through low salini<span class=\"more-link\"><a href=\"http:\/\/learncmg.cn\/?p=55072\">Continue Reading<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[159],"tags":[343,577],"_links":{"self":[{"href":"http:\/\/learncmg.cn\/index.php?rest_route=\/wp\/v2\/posts\/55072"}],"collection":[{"href":"http:\/\/learncmg.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/learncmg.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/learncmg.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/learncmg.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=55072"}],"version-history":[{"count":0,"href":"http:\/\/learncmg.cn\/index.php?rest_route=\/wp\/v2\/posts\/55072\/revisions"}],"wp:attachment":[{"href":"http:\/\/learncmg.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=55072"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/learncmg.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=55072"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/learncmg.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=55072"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}