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Issue 20, 2015
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Geo-material microfluidics at reservoir conditions for subsurface energy resource applications

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Abstract

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. 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. 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.

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

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Publication details

The article was received on 22 Jun 2015, accepted on 20 Aug 2015 and first published on 20 Aug 2015


Article type: Paper
DOI: 10.1039/C5LC00704F
Citation: Lab Chip, 2015,15, 4044-4053
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    Geo-material microfluidics at reservoir conditions for subsurface energy resource applications

    M. L. Porter, J. Jiménez-Martínez, R. Martinez, Q. McCulloch, J. W. Carey and H. S. Viswanathan, Lab Chip, 2015, 15, 4044
    DOI: 10.1039/C5LC00704F

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