中南大学学报（自然科学版）2017，Vol.48Issue(9)：2465-2473,9.DOI:10.11817/j.issn.1672-7207.2017.09.027
泡沫在裂缝中流动特征的物理模拟
Physical simulation on flowing characteristics of foam in fracture
摘要
Abstract
Rock and visual fracture models were designed based on the properties of foam flow, and foam flow behaviors in the fractures were studied and compared with gas-liquid two-phase flow behaviors. The results show that in the PMMA fracture, when the gas liquid ratio is increased, the gas-liquid two-phase flow can easily form gas channeling zone and thus enhances its mobility. On the contrary, the flow resistance of foam in fracture increases with gas liquid ratio rising. When the flow rate is increased, the pressure gradient of gas-liquid two-phase flow rises linearly. For foam flow, the pressure gradient in low-speed region is smaller than that in high-speed region. The microstructure of foam is changed by the fracture roughness, which in turn affects foam flow behavior. In rock fracture model, when gas-liquid ratio is relatively low, the flow resistance of gas-liquid two-phase flow rises with the gas-liquid ratio increasing. When gas and liquid ratio is above 2.5, the pressure gradient of gas-liquid two-phase flow decreased with the gas-liquid ratio increasing. The pressure gradients of foam flow under different gas-liquid ratio are higher than that of two-phase flow. The pressure gradients of foam flow under different injection rates always rise with the increase of gas-liquid ratio. When the injection rate is increased, the pressure gradients of the two-phase flow and foam flow rise linearly.关键词
泡沫/裂缝/流动特征/气液比/流速/粗糙度Key words
foam/fracture/flowing characteristics/gas-liquid ratio/flow rate/roughness分类
能源科技引用本文复制引用
李宾飞,李兆敏,吕其超,张红松,张昀..泡沫在裂缝中流动特征的物理模拟[J].中南大学学报（自然科学版）,2017,48(9):2465-2473,9.基金项目
国家自然科学基金资助项目(51574264) （51574264）
山东省自然科学基金资助项目(ZR2015EL015) （ZR2015EL015）
国家高技术研究发展计划(863计划)项目(2013AA064803) （863计划）
国家科技重大专项(2011ZX05051003) (Project(51574264) supported by the National Natural Science Foundation of China （2011ZX05051003）
Project(ZR2015EL015) supported by the Natural Science Foundation of Shandong Province （ZR2015EL015）
Project(2013AA064803) supported by the National High Technology Research and Development Program (863 Program) of China （2013AA064803）
Project(2011ZX05051003) supported by the National Science and Technology Major Program of China) （2011ZX05051003）
