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Title: Geo-material microfluidics at reservoir conditions for subsurface energy resource applications

Journal Article · · Lab on a Chip
DOI:https://doi.org/10.1039/C5LC00704F· OSTI ID:1329870
 [1];  [1];  [2];  [2];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Earth and Environmental Sciences
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). The Center for Integrated Nanotechnology (CINT)

Microfluidic investigations of flow and transport in porous and fractured media have the potential to play a significant role in the development of future subsurface energy resource technologies. However, the majority of experimental systems to date are limited in applicability due to operating conditions and/or the use of engineered material micromodels. In this paper, we have developed a high pressure and temperature microfluidic experimental system that allows for direct observations of flow and transport within geo-material micromodels (e.g. rock, cement) at reservoir conditions. In this manuscript, we describe the experimental system, including our novel micromodel fabrication method that works in both geo- and engineered materials and utilizes 3-D tomography images of real fractures as micromodel templates to better represent the pore space and fracture geometries expected in subsurface formations. We present experimental results that highlight the advantages of using real-rock micromodels and discuss potential areas of research that could benefit from geo-material microfluidic investigations. Finally, the experiments include fracture–matrix interaction in which water imbibes into the shale rock matrix from etched fractures, supercritical CO2 (scCO2) displacing brine in idealized and realistic fracture patterns, and three-phase flow involving scCO2–brine–oil.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
20140002DR; C2014A0054; FE-0001706
OSTI ID:
1329870
Report Number(s):
LA-UR-15-24691
Journal Information:
Lab on a Chip, Vol. 15, Issue 20; ISSN 1473-0197
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 78 works
Citation information provided by
Web of Science

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Microfluidics for Porous Systems: Fabrication, Microscopy and Applications journal November 2018
Functionalisation of Polydimethylsiloxane (PDMS)- Microfluidic Devices coated with Rock Minerals journal October 2018
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Natural gas vaporization in a nanoscale throat connected model of shale: multi-scale, multi-component and multi-phase journal January 2019
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