Dynamic Capillary Effects Throughout the Hysteretic Capillary Pressure-Saturation (Pc-S) Relationship: Fundamental Causes and Dependencies

整个迟滞毛细管压力-饱和度 (Pc-S) 关系的动态毛细管效应：根本原因和依赖性

• 批准号: 0911139
• 负责人: Tohren Kibbey
• 金额: $ 30万
• 依托单位: University of Oklahoma Norman Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-07-15 至 2014-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0911139&HistoricalAwards=false
• 关键词: Dynamic; Capillary; Effects; Throughout; Hysteretic

The objective of this project is to conduct a quantitative study of dynamic capillary effects throughout the hysteretic capillary pressure-saturation relationship using a combination of experimental techniques. The hypothesis is that dynamic capillary effects vary with saturation, wetting/drying path, and fluid and porous media properties, and that the relationships are dictated by the magnitude of the response of the ratio between capillary and viscous forces to changing velocity. This hypothesis will be evaluated through direct measurement of the dynamic capillary pressure coefficient, ô, throughout the hysteretic capillary pressure-saturation (Pc - S) relationship. Experiments will make use of custom-designed membrane-based fluid-selective pore pressure micro-sensors, coupled with a method for rapid measurement of hysteretic (Pc - S) relationships. A collaborative modeling effort using the CompSim 3-D multiphase flow model will use the results of experimental measurements to explore the potential impacts of dynamic effects in large-scale systems.

本项目的目的是进行定量研究的动态毛细管效应的滞后毛细管压力饱和度的关系，使用的实验技术相结合。 该假设是动态毛细管效应随饱和度、润湿/干燥路径以及流体和多孔介质特性而变化，并且这些关系由毛细管力和粘性力对变化速度的比率的响应的幅度决定。 将通过直接测量整个滞后毛细管压力-饱和度（Pc - S）关系中的动态毛细管压力系数来评估这一假设。 实验将利用定制设计的基于膜的流体选择性孔隙压力微传感器，再加上一种方法，用于快速测量滞后（PC-S）的关系。 使用CompSim三维多相流模型的协作建模工作将使用实验测量结果来探索大型系统中动态效应的潜在影响。