CIESC Journal ›› 2014, Vol. 65 ›› Issue (S1): 194-198.DOI: 10.3969/j.issn.0438-1157.2014.z1.031

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Rheology characteristics for foam lamellae flow in a straight tube

DU Dongxing1,2, MA Xinjun1,2, ZHANG Fahu1,2, LI Yingge2,3   

  1. 1. College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, China;
    2. Qingdao Municipal Key Laboratory on Geological & Exploration Engineering Technology for Enhanced Shale Oil & Gas Recovery, Qingdao 266061, Shandong, China;
    3. College of Automation and Electronic Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China
  • Received:2014-02-10 Revised:2014-02-20 Online:2014-05-30 Published:2014-05-30
  • Supported by:

    supported by the National Natural Science Foundation of China (51176081).

泡沫薄膜液在直管内的流变学特性

杜东兴1,2, 马新军1,2, 张发虎1,2, 李莺歌2,3   

  1. 1. 青岛科技大学机电工程学院, 山东 青岛 266061;
    2. 青岛市页岩油气增产地质与开采工程技术 重点实验室, 山东 青岛 266061;
    3. 青岛科技大学自动化与电子工程学院, 山东 青岛 266042
  • 通讯作者: 杜东兴
  • 基金资助:

    国家自然科学基金项目(51176081)。

Abstract: For understanding foam rheology in porous media, experimental investigations were carried out concerning foam lamellae flow characteristics in a straight tube. Foam is treated as single phase non-Newtonian fluid and its flow behavior was studied based on power law constitutive model. It is observed the film foam flow exhibits remarkably high apparent viscosity and obvious shear-thinning behavior, with flow consistency coefficient of K=0.11 and flow behavior index of n=0.61 for CO2 foam. Parameter studies were carried out for different internal gas types. It is found N2 foam is stronger than CO2 foam due to the water solubility of CO2 gas. Non-dimensional analysis was performed and a fit model with a threshold value of 0.71 was proposed based on experimental data, which indicates a startup pressure difference is necessary to mobilize the lamellae. The fit model is deemed to predict foam dynamic flow behavior in porous media in a more realistic and accurate manner.

Key words: foam, lamellae, rheology, carbon dioxide, nitrogen, non-dimensional analysis

摘要: 针对泡沫液在多孔介质内的流动特点,对泡沫薄膜液在直管内的流变学特性进行了实验研究。按单相幂律流体假设,获得二氧化碳及氮气泡沫薄膜液的表观黏度数据。结果表明:泡沫薄膜液具有较大表观黏度并呈现剪切变稀的非牛顿流体特性。由于水溶性影响,二氧化碳泡沫液的表观黏度要小于氮气泡沫液。利用量纲分析法确定量纲1参数,对泡沫薄膜液的流变学特性进行了量纲1分析并给出基于两相流动分析的阻力模型。

关键词: 泡沫, 薄膜液, 流变学, 二氧化碳, 氮气, 量纲1分析

CLC Number: