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Minimal surfaces in porous media: pore-scale imaging of multiphase flow in an altered-wettability Bentheimer sandstone

Minimal surfaces in porous media: pore-scale imaging of multiphase flow in an altered-wettability Bentheimer sandstone

This is a Preprint and has not been peer reviewed. The published version of this Preprint is available: https://doi.org/10.1103/PhysRevE.99.063105. This is version 1 of this Preprint.

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Authors

Qingyang Lin, Branko Bijeljic, Steffen Berg, Ronny Pini , Martin J Blunt , Sam Krevor ...  more

Abstract

We observed features of pore scale fluid distributions during oil-brine displacement in a mixed-wet sandstone rock sample. High-resolution X-ray imaging was used in combination with differential pressure measurements to measure relative permeability and capillary pressure simultaneously during a steady-state waterflood experiment on a sample of Bentheimer sandstone 51.6 mm long and 6.1 mm in diameter. After prolonged contact with crude oil to alter the surface wettability, a refined oil and formation brine were injected through the sample at a fixed total flow rate but in a sequence of increasing brine fractional flows. When the pressure acr...  more

DOI

https://doi.org/10.31223/osf.io/f8m27

Subjects

Earth Sciences, Fluid Dynamics, Physical Sciences and Mathematics, Physics

Keywords

Capillary pressure, imaging, relative permeability, curvature, interfaces, minimal surfaces, mixed wettability

Dates

Published: 2019-03-28 19:57

License

Academic Free License (AFL) 3.0