Imperial College London
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ProfessorAnnMuggeridge

Faculty of Engineering, Department of Earth Science & Engineering

Consul for Faculty of Engineering and the Business School
 
 
 
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Contact

 

+44 (0)20 7594 7379a.muggeridge Website

 
 
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Location

 

2.38BRoyal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Hiller:2018,
author = {Hiller, T and Ardevol-Murison, J and Muggeridge, AH and Schroter, M and Brinkmann, M},
journal = {SPE Journal},
title = {The impact of wetting heterogeneity distribution on capillary pressure and macroscopic measures of wettability},
year = {2018}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This work investigates how the different length scales of pore scale wetting heterogeneities affect the shape of capillary pressure-saturation (CPS) curves and the derived USBM and Amott-Harvey wettability indices. These macroscopic  wettability  indices  are used  to  describe  bulk  rock  wettability  as  the  local  contact  angle  (the standard  physical  measure  of  wettability)  in  a  sample which  is  difficult  to  access  andmay  vary  within  and between  pores  due  to  changes  in  mineralogy  and  the  surface  coverage  of  organic  materials. Our study combines   laboratory   experiments   and full-scale   fluid   dynamics   simulations   employing   the   multi-phase Stochastic  Rotation  Dynamics  (SRDmc)  model.  Four model  systems  were  created  using monodisperse glass beads. The surface properties of the beads were modified so that half of the surface area in each system was strongly  hydrophilic  and  half  was  hydrophobic  but  each  system  had  a  different length  scaleof  wetting heterogeneity, ranging  from  a  fraction  of  the  bead  diameter  to  two  bead  diameters.  There  is  excellent agreement  between  the  experimental  and  simulation  results.  All  systems  are  classified  as intermediate wet based on  their  Amott-Harvey  and  USBM  indices. Examination of the  capillary  pressure  curves  shows  that the opening of the stable hysteresis loop decreases   monotonically   as  the length   scale of  the wetting heterogeneities  is  increased.  Hence, our results suggest  that  macroscopic  wettability  indices  may  be  used  as indicators  of  ultimate  recovery,  but  are  not  suited  to  discriminate  between  the  different  flows  that  occur earlier on in a mixed wettability displacement process.
AU  - Hiller,T
AU  - Ardevol-Murison,J
AU  - Muggeridge,AH
AU  - Schroter,M
AU  - Brinkmann,M
PY  - 2018///
SN  - 1930-0220
TI  - The impact of wetting heterogeneity distribution on capillary pressure and macroscopic measures of wettability
T2  - SPE Journal
ER  -
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