In this section
@article{Collini:2022:10.1016/j.jcis.2021.09.100,
author = {Collini, H and Jackson, MD},
doi = {10.1016/j.jcis.2021.09.100},
journal = {Journal of Colloid and Interface Science},
pages = {605--621},
title = {Relationship between zeta potential and wettability in porous media: insights from a simple bundle of capillary tubes model},
url = {http://dx.doi.org/10.1016/j.jcis.2021.09.100},
volume = {608},
year = {2022}
}
TY - JOUR
AB - Hypothesis & MotivationExperimental data suggest a relationship between the macroscopic zeta potential measured on intact rock samples and the sample wettability. However, there is no pore-scale model to quantify this relationship.MethodsWe consider the simplest representation of a rock pore space: a bundle of capillary tubes of varying size. Equations describing mass and charge transfer through a single capillary are derived and the macroscopic zeta potential and wettability determined by integrating over capillaries. Model predictions are tested against measured data yielding a good match.FindingsMixed- and oil-wet models return a macro-scale zeta potential that is a combination of the micro-scale zeta potential of mineral-brine and oil-brine interfaces and the relationship between macro-scale zeta potential and water saturation exhibits hysteresis. The model predicts a similar relationship between zeta potential and wettability to that observed in experimental data but does not provide a perfect match. Fitting the model to experimental data allows the oil-brine zeta potential to be estimated at conditions where it cannot be measured directly. Results suggest that positive values of the oil-brine zeta potential may be more common than previously thought with implications for surface complexation models and the design of controlled salinity waterflooding of oil reservoirs.
AU - Collini,H
AU - Jackson,MD
DO - 10.1016/j.jcis.2021.09.100
EP - 621
PY - 2022///
SN - 0021-9797
SP - 605
TI - Relationship between zeta potential and wettability in porous media: insights from a simple bundle of capillary tubes model
T2 - Journal of Colloid and Interface Science
UR - http://dx.doi.org/10.1016/j.jcis.2021.09.100
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000711817600007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - https://www.sciencedirect.com/science/article/pii/S0021979721015599?via%3Dihub
UR - http://hdl.handle.net/10044/1/93554
VL - 608
ER -