Flow Patterns of Viscoelastic Fracture Fluids in Porous Media: Influence of Pore-Throat Structures
Viscoelastic surfactant (VES) fluid and hydrolyzed polyacryamide (HPAM) solution are two of the most common fracturing fluids used in the hydraulic fracturing development of unconventional reservoirs. The filtration of fracturing fluids in porous media is mainly determined by the flow patterns in po...
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doaj-312f8348f17d444ba79ae099792cb5682020-11-25T01:15:28ZengMDPI AGPolymers2073-43602019-08-01118129110.3390/polym11081291polym11081291Flow Patterns of Viscoelastic Fracture Fluids in Porous Media: Influence of Pore-Throat StructuresXiaoxi Yu0Yuan Li1Yuquan Liu2Yuping Yang3Yining Wu4School of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaSchool of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaSchool of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaCNPC Engineering Technology R&D Company Limited, Beijing 102206, ChinaSchool of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, ChinaViscoelastic surfactant (VES) fluid and hydrolyzed polyacryamide (HPAM) solution are two of the most common fracturing fluids used in the hydraulic fracturing development of unconventional reservoirs. The filtration of fracturing fluids in porous media is mainly determined by the flow patterns in pore-throat structures. In this paper, three different microdevices analogue of porous media allow access to a large range of Deborah number (De) and concomitantly low Reynolds number (Re). Continuous pore-throat structures were applied to study the feedback effect of downstream structure on upstream flow of VES fluid and HPAM solution with Deborah (De) number from 1.11 to 146.4. In the infinite straight channel, flow patterns between VES fluids and HPAM solution were similar. However, as pore length shortened to 800 μm, flow field of VES fluid exhibited the triangle shape with double-peaks velocity patterns. The flow field of HPAM solution presented stable and centralized streamlines when <i>Re</i> was larger than 4.29 × 10<sup>−2</sup>. Additionally, when the pore length was further shortened to 400 μm, double-peaks velocity patterns were vanished for VES fluid and the stable convergent flow characteristic of HPAM solution was observed with all flow rates.https://www.mdpi.com/2073-4360/11/8/1291viscoelastic surfactant fluidhydrolyzed polyacryamide solutionpore-throat structureflow patterns |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xiaoxi Yu Yuan Li Yuquan Liu Yuping Yang Yining Wu |
spellingShingle |
Xiaoxi Yu Yuan Li Yuquan Liu Yuping Yang Yining Wu Flow Patterns of Viscoelastic Fracture Fluids in Porous Media: Influence of Pore-Throat Structures Polymers viscoelastic surfactant fluid hydrolyzed polyacryamide solution pore-throat structure flow patterns |
author_facet |
Xiaoxi Yu Yuan Li Yuquan Liu Yuping Yang Yining Wu |
author_sort |
Xiaoxi Yu |
title |
Flow Patterns of Viscoelastic Fracture Fluids in Porous Media: Influence of Pore-Throat Structures |
title_short |
Flow Patterns of Viscoelastic Fracture Fluids in Porous Media: Influence of Pore-Throat Structures |
title_full |
Flow Patterns of Viscoelastic Fracture Fluids in Porous Media: Influence of Pore-Throat Structures |
title_fullStr |
Flow Patterns of Viscoelastic Fracture Fluids in Porous Media: Influence of Pore-Throat Structures |
title_full_unstemmed |
Flow Patterns of Viscoelastic Fracture Fluids in Porous Media: Influence of Pore-Throat Structures |
title_sort |
flow patterns of viscoelastic fracture fluids in porous media: influence of pore-throat structures |
publisher |
MDPI AG |
series |
Polymers |
issn |
2073-4360 |
publishDate |
2019-08-01 |
description |
Viscoelastic surfactant (VES) fluid and hydrolyzed polyacryamide (HPAM) solution are two of the most common fracturing fluids used in the hydraulic fracturing development of unconventional reservoirs. The filtration of fracturing fluids in porous media is mainly determined by the flow patterns in pore-throat structures. In this paper, three different microdevices analogue of porous media allow access to a large range of Deborah number (De) and concomitantly low Reynolds number (Re). Continuous pore-throat structures were applied to study the feedback effect of downstream structure on upstream flow of VES fluid and HPAM solution with Deborah (De) number from 1.11 to 146.4. In the infinite straight channel, flow patterns between VES fluids and HPAM solution were similar. However, as pore length shortened to 800 μm, flow field of VES fluid exhibited the triangle shape with double-peaks velocity patterns. The flow field of HPAM solution presented stable and centralized streamlines when <i>Re</i> was larger than 4.29 × 10<sup>−2</sup>. Additionally, when the pore length was further shortened to 400 μm, double-peaks velocity patterns were vanished for VES fluid and the stable convergent flow characteristic of HPAM solution was observed with all flow rates. |
topic |
viscoelastic surfactant fluid hydrolyzed polyacryamide solution pore-throat structure flow patterns |
url |
https://www.mdpi.com/2073-4360/11/8/1291 |
work_keys_str_mv |
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