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Transport in Porous Media

, Volume 76, Issue 2, pp 199–218 | Cite as

Fundamental Study of Pore Morphology Effect in Low Tension Polymer Flooding or Polymer–Assisted Dilute Surfactant Flooding

  • Benyamin Yadali JamaloeiEmail author
  • Riyaz Kharrat
Article

Abstract

Low Tension Polymer Flooding or Polymer Assisted Dilute Surfactant Flooding is generally deployed as a method to produce additional oil trapped in oil reservoirs after waterflooding. Fundamental study of microscopic mechanisms and pore-level phenomena in Polymer Assisted Dilute Surfactant Flooding needs more investigation. Of particular concern and interest is to probe into and document the effect of pore morphology and structure on microscopic phenomena occurring at pore level. No previous works on the effect of pore morphology in Polymer Assisted Dilute Surfactant Flooding has been reported in the literature. In this study, one-quarter five-spot glass micromodels were deployed to examine the effect of porous media morphology and structure on microscopic mechanisms as well as macroscopic behavior of Polymer Assisted Dilute Surfactant Flooding. Four types of pore morphologies were employed to study this factor. Results show that the pore geometric properties in a porous medium will dictate the degree of displacement front instability, capillary imbalance, viscous fingering, wetting characteristics and its distribution, and finally magnitude of ultimate oil recovery. We also found that the formation of flow scheme is dramatically influenced by the pre-designed injection scheme.

Keywords

Pore morphology Dilute surfactant flooding Five-spot Micromodel 

Nomenclature

Letters

BT

Breakthrough time

\({{\rm C}_{\rm CaCl_2}}\)

Calcium chloride concentration (wt%)

\({{\rm C}_{\rm MgCl_2}}\)

Magnesium chloride concentration (wt%)

CNaCl

Sodium chloride concentration (wt%)

k

Absolute permeability (Darcy)

Min

Minute

Swc

Connate water saturation (%)

t

Time (Min)

Greek Symbols

φ

Porosity

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References

  1. Crain E.R.: Crain’s Petrophysical Handbook. Alberta, Canada (1978)Google Scholar
  2. Dullien F.A.L.: Porous Media: Fluid Transport and Porous Structure. Academic Press, San Diego, CA (1992)Google Scholar
  3. Torskaya, T., Jin, G., Torres-Verdin, C.: Pore-level analysis of the relationship between porosity, irreducible water saturation, and permeability of clastic rocks. Paper presented at the annual SPE technical conference (ATCE 2007), Anaheim, CA, 11–14 Nov 2007Google Scholar
  4. Yadali, J. B.: Experimental study of surfactant/water/polymer flooding using one-quarter five-spot glass micromodels. M.Sc. Thesis, Petroleum University of Technology, Tehran (2007)Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.University of CalgaryCalgaryCanada
  2. 2.Petroleum University of TechnologyTehranIran

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