首页> 外文期刊>Fractals: An interdisciplinary journal on the complex geometry of nature >SPONTANEOUS IMBIBITION PROCESS IN MICRO-NANO FRACTAL CAPILLARIES CONSIDERING SLIP FLOW
【24h】

SPONTANEOUS IMBIBITION PROCESS IN MICRO-NANO FRACTAL CAPILLARIES CONSIDERING SLIP FLOW

机译:微纳米分形毛细管中的自发性吸收过程考虑滑动流动

获取原文
获取原文并翻译 | 示例
           

摘要

An imbibition process of water into a matrix is required to investigate the influences of large-volume fracturing fluids on gas production of unconventional formations. Slip flow has been recognized by recent studies as a major mechanism of fluid transport in nanotubes. For nanopores in shale, a slip boundary is nonnegligible in the imbibition process. In this study, we established an analytic equation of spontaneous imbibition considering slip effects in capillaries. A spontaneous imbibition model that couples the analytic equation considering the slip effect was constructed based on fractal theory. We then used a model for various conditions,such as slip boundary, pore structure, and fractal dimension of pore tortuosity, to capture the imbibition characteristics considering the slip effect. A dynamic contact angle was integrated into the modeling. Results of our study verify that the slip boundary influences water imbibition significantly. The imbibition speed is significantly improved when slip length reaches the equivalent diameter of a tube. Therefore, disregarding the slip effect will underestimate the imbibition speed in shale samples.
机译:需要将水的吸收过程进入基质,以研究大体积压裂流体对非传统形成的气体生产的影响。最近的研究已经认识到滑动流量作为纳米管中的流体输送的主要机制。对于页岩中的纳米孔,在吸入过程中不可用的滑动边界。在这项研究中,考虑到毛细血管中的滑移效应,建立了自发性吸收的分析方程。基于分形理论构建了考虑防滑效果的自发性吸收模型。然后,我们使用模型进行各种条件,例如滑动边界,孔隙结构和孔曲折的分形尺寸,以捕获考虑滑动效果的吸入特性。动态接触角集成到建模中。我们的研究结果证实,滑动边界会显着影响水的吸收。当滑动长度达到管的等效直径时,吸入速度显着提高。因此,无视滑移效果将低估页岩样本中的吸入速度。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号