Droplet fragmentation: 3D imaging of a previously unidentified pore-scale process during multiphase flow in porous media

Research output: Contribution to journalArticle

74 Citations (Scopus)
208 Downloads (Pure)

Abstract

Using X-ray computed microtomography, we have visualized and quantified the in situ structure of a trapped nonwetting phase (oil) in a highly heterogeneous carbonate rock after injecting a wetting phase (brine) at low and high capillary numbers. We imaged the process of capillary desaturation in 3D and demonstrated its impacts on the trapped nonwetting phase cluster size distribution. We have identified a previously unidentified pore-scale event during capillary desaturation. This pore-scale event, described as droplet fragmentation of the nonwetting phase, occurs in larger pores. It increases volumetric production of the nonwetting phase after capillary trapping and enlarges the fluid−fluid interface, which can enhance mass transfer between the phases. Droplet fragmentation therefore has implications for a range of multiphase flow processes in natural and engineered porous media with complex heterogeneous pore spaces.
Original languageEnglish
JournalProceedings of the National Academy of Sciences
Early online date2 Feb 2015
DOIs
Publication statusPublished - 2015

Fingerprint Dive into the research topics of 'Droplet fragmentation: 3D imaging of a previously unidentified pore-scale process during multiphase flow in porous media'. Together they form a unique fingerprint.

  • Cite this