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Title: Micro-PIV measurements of multiphase flow of water and liquid CO2 in 2-D heterogeneous porous micromodels

Abstract

We present an experimental study of pore-scale flow dynamics of liquid CO2 and water in a two-dimensional heterogeneous porous micromodel, inspired by the structure of a reservoir rock, at reservoir-relevant conditions (80 bar, 21°C). The entire process of CO2 infiltration into a water-saturated micromodel was captured using fluorescence microscopy and the micro-PIV method, which together reveal complex fluid displacement patterns and abrupt changes in velocity. The CO2 front migrated through the resident water in an intermittent manner, forming dendritic structures, termed fingers, in directions along, normal to, and even opposing the bulk pressure gradient. Such characteristics indicate the dominance of capillary fingering through the micromodel. Velocity burst events, termed Haines jumps, were also captured in the heterogeneous micromodel, during which the local Reynolds number was estimated to be ~21 in the CO2 phase, exceeding the range of validity of Darcy's law. Furthermore, these drainage events were observed to be cooperative (i.e., across multiple pores simultaneously), with the zone of influence of such events extending beyond tens of pores, confirming, in a quantitative manner, that Haines jumps are nonlocal phenomena. After CO2 completely breaks through the porous section, shear-induced circulations caused by flowing CO2 were also observed, in agreement with previousmore » studies using a homogeneous porous micromodel. To our knowledge, this study is the first quantitative measurement that incorporates both reservoir-relevant conditions and rock-inspired heterogeneity, and thus will be useful for pore-scale model development and validation.« less

Authors:
ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [2]
  1. Univ. of Notre Dame, IN (United States). Dept. of Aerospace and Mechanical Engineering; Kyushu Univ. (Japan). 2CO2 Storage Division, International Inst. for Carbon-Neutral Energy Research (I2CNER)
  2. Univ. of Notre Dame, IN (United States). Dept. of Aerospace and Mechanical Engineering, Dept. of Civil and Environmental Engineering, and Earth Sciences Division; Kyushu Univ. (Japan). 2CO2 Storage Division, International Inst. for Carbon-Neutral Energy Research (I2CNER)
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Geologic Storage of CO2 (GSCO2)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1470199
Alternate Identifier(s):
OSTI ID: 1375528
Grant/Contract Number:  
SC0012504
Resource Type:
Accepted Manuscript
Journal Name:
Water Resources Research
Additional Journal Information:
Journal Volume: 53; Journal Issue: 7; Related Information: GSCO2 partners with University of Illinois Urbana-Champaign (lead); National Energy Technology Laboratory; Schlumberger; SINTEF; Stiftelsen Norsar; Texas Tech University; University of Notre Dame; University of Southern California; University of Texas at Austin; Wright State University; Journal ID: ISSN 0043-1397
Publisher:
American Geophysical Union (AGU)
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 42 ENGINEERING; 54 ENVIRONMENTAL SCIENCES; defects; mechanical behavior; carbon sequestration; mesostructured materials; pore-scale flow; water and liquid CO2; micro PIV; high pressure; geologic CO2 sequestration

Citation Formats

Li, Yaofa, Kazemifar, Farzan, Blois, Gianluca, and Christensen, Kenneth T. Micro-PIV measurements of multiphase flow of water and liquid CO2 in 2-D heterogeneous porous micromodels. United States: N. p., 2017. Web. doi:10.1002/2017WR020850.
Li, Yaofa, Kazemifar, Farzan, Blois, Gianluca, & Christensen, Kenneth T. Micro-PIV measurements of multiphase flow of water and liquid CO2 in 2-D heterogeneous porous micromodels. United States. doi:10.1002/2017WR020850.
Li, Yaofa, Kazemifar, Farzan, Blois, Gianluca, and Christensen, Kenneth T. Sat . "Micro-PIV measurements of multiphase flow of water and liquid CO2 in 2-D heterogeneous porous micromodels". United States. doi:10.1002/2017WR020850. https://www.osti.gov/servlets/purl/1470199.
@article{osti_1470199,
title = {Micro-PIV measurements of multiphase flow of water and liquid CO2 in 2-D heterogeneous porous micromodels},
author = {Li, Yaofa and Kazemifar, Farzan and Blois, Gianluca and Christensen, Kenneth T.},
abstractNote = {We present an experimental study of pore-scale flow dynamics of liquid CO2 and water in a two-dimensional heterogeneous porous micromodel, inspired by the structure of a reservoir rock, at reservoir-relevant conditions (80 bar, 21°C). The entire process of CO2 infiltration into a water-saturated micromodel was captured using fluorescence microscopy and the micro-PIV method, which together reveal complex fluid displacement patterns and abrupt changes in velocity. The CO2 front migrated through the resident water in an intermittent manner, forming dendritic structures, termed fingers, in directions along, normal to, and even opposing the bulk pressure gradient. Such characteristics indicate the dominance of capillary fingering through the micromodel. Velocity burst events, termed Haines jumps, were also captured in the heterogeneous micromodel, during which the local Reynolds number was estimated to be ~21 in the CO2 phase, exceeding the range of validity of Darcy's law. Furthermore, these drainage events were observed to be cooperative (i.e., across multiple pores simultaneously), with the zone of influence of such events extending beyond tens of pores, confirming, in a quantitative manner, that Haines jumps are nonlocal phenomena. After CO2 completely breaks through the porous section, shear-induced circulations caused by flowing CO2 were also observed, in agreement with previous studies using a homogeneous porous micromodel. To our knowledge, this study is the first quantitative measurement that incorporates both reservoir-relevant conditions and rock-inspired heterogeneity, and thus will be useful for pore-scale model development and validation.},
doi = {10.1002/2017WR020850},
journal = {Water Resources Research},
number = 7,
volume = 53,
place = {United States},
year = {2017},
month = {7}
}

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