TY -的A2 Rezaee Reza盟——窦,都非盟-杨,分盟——高,回族非盟-江,东星盟——刘Chenglu PY - 2020 DA - 2020/12/16 TI -描述致密砂岩储层的动态自吸位移机制利用NMR技术SP - 8880545六世- 2020 AB -实验技术开发研究致密砂岩地层的动态自吸驱替机理的鄂尔多斯盆地三叠系延长组。通过结合动态核心洪水自吸实验和核磁共振技术,注入体积和利率的影响驱油效率。此外,动态自吸的驱替效率比较与静态自吸。本研究获得的见解在致密砂岩地层动态自吸的微观结构。发现动态自吸的相对位移效率随注入量的增加。但增加幅度随注入量的增加而减小。相同的注入量,动态自吸高渗透率的岩心驱替效率明显提高。然而,岩心驱油效率与注入量的增加迅速降低。推荐最优注入卷紧与不同渗透率砂岩地层。随着位移的增加率、动态自吸的岩心驱替效率显示了一个先上升,后下降的趋势。 There exists an optimal displacement rate in dynamic imbibition displacement, and the optimal displacement rate almost linearly increases with the increase of core permeability. The static imbibition displacement efficiency increases with the increase of soaking time, but the increment amplitude slows down obviously. The displacement efficiency of static imbibition in small pores is higher than that of dynamic imbibition. The displacement efficiency of dynamic imbibition in large pores or microcracks is significantly higher than that of static imbibition. This study provides theoretical support for the optimization and improvement of the waterflooding recovery process in tight sandstone reservoirs. SN - 1468-8115 UR - https://doi.org/10.1155/2020/8880545 DO - 10.1155/2020/8880545 JF - Geofluids PB - Hindawi KW - ER -