skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Pore-scale capillary pressure analysis using multi-scale X-ray micromotography

Authors:
; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1397858
Grant/Contract Number:
AC02-05CH11231
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Advances in Water Resources
Additional Journal Information:
Journal Volume: 104; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-10-04 22:21:52; Journal ID: ISSN 0309-1708
Publisher:
Elsevier
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Garing, Charlotte, de Chalendar, Jacques A., Voltolini, Marco, Ajo-Franklin, Jonathan B., and Benson, Sally M. Pore-scale capillary pressure analysis using multi-scale X-ray micromotography. United Kingdom: N. p., 2017. Web. doi:10.1016/j.advwatres.2017.04.006.
Garing, Charlotte, de Chalendar, Jacques A., Voltolini, Marco, Ajo-Franklin, Jonathan B., & Benson, Sally M. Pore-scale capillary pressure analysis using multi-scale X-ray micromotography. United Kingdom. doi:10.1016/j.advwatres.2017.04.006.
Garing, Charlotte, de Chalendar, Jacques A., Voltolini, Marco, Ajo-Franklin, Jonathan B., and Benson, Sally M. Thu . "Pore-scale capillary pressure analysis using multi-scale X-ray micromotography". United Kingdom. doi:10.1016/j.advwatres.2017.04.006.
@article{osti_1397858,
title = {Pore-scale capillary pressure analysis using multi-scale X-ray micromotography},
author = {Garing, Charlotte and de Chalendar, Jacques A. and Voltolini, Marco and Ajo-Franklin, Jonathan B. and Benson, Sally M.},
abstractNote = {},
doi = {10.1016/j.advwatres.2017.04.006},
journal = {Advances in Water Resources},
number = C,
volume = 104,
place = {United Kingdom},
year = {Thu Jun 01 00:00:00 EDT 2017},
month = {Thu Jun 01 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.advwatres.2017.04.006

Citation Metrics:
Cited by: 4works
Citation information provided by
Web of Science

Save / Share:
  • Synchrotron-based tomographic datasets of oil-water drainage and imbibition cycles have been analyzed to quantify phase saturations and interfacial curvature as well as connected and disconnected fluid configurations. This allows for close observation of the drainage and imbibition processes, assessment of equilibrium states, and studying the effects of fluid phase disconnection and reconnection on the resulting capillary pressures and interfacial curvatures. Based on this analysis estimates of capillary pressure calculated from interfacial curvature can be compared to capillary pressure measured externally with a transducer. Results show good agreement between curvature-based and transducer-based measurements when connected phase interfaces are considered. Curvature measurementsmore » show a strong dependence on whether an interface is formed by connected or disconnected fluid and the time allowed for equilibration. The favorable agreement between curvature-based and transducer-based capillary pressure measurements shows promise for the use of image-based estimates of capillary pressure for interfaces that cannot be probed with external transducers as well as opportunities for a detailed assessment of interfacial curvature during drainage and imbibition.« less
  • An experimental approach to study physical processes affecting fluid behavior in three-fluid porous media systems was designed and implemented. These experiments were designed to provide quantitative evidence of important pore-scale displacement processes. A unique experimental approach using a two-dimensional synthetic porous medium (micromodel) and digital image analysis (DIA) enable both measurement of three-fluid capillary pressure-saturation relationships and analysis of fluid behavior at the pore level. Experiments were pressure controlled, and were designed to mimic measurements typically performed on laboratory cores. Only quasi-static measurements were made, with a focus on capillary pressure-saturation relations. Different orders of fluid infiltration with respect tomore » wettability were studied. DIA made it possible to obtain quantitative information about the experiments, including fluid saturations, saturation changes between pressure steps, and movement of apparently isolated fluids through films. The results provide insights into important pore-scale mechanisms and provide a basis for three-fluid pore-scale computations. 30 refs., 5 figs., 1 tab.« less
  • X-ray micro-tomography (XMT), image processing, and lattice Boltzmann (LB) methods were combined to observe sediment mixing, subsurface structure, and patterns of hydrogeological properties associated with bed sediment transport. Transport and mixing of sand and spherical glass beads were observed in a laboratory flume, beginning from a well-defined layered initial condition. Cores were obtained from the streambed at four different times, and each core was scanned by XMT in order to assess the evolution of spatial patterns within the bed. Image analysis clearly revealed the propagation of a sediment mixing front that began at the bed surface. The image data weremore » used as boundary conditions in 3D LB simulation of pore fluid flow, showing that sediment sorting produced strong vertical gradients in permeability near the streambed surface. This new methodological approach offers potential for greatly improved characterization of mixing and transport of fine sediments in a wide variety of aquatic systems.« less