Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 250, Issue -, Pages 396-403Publisher
ELSEVIER
DOI: 10.1016/j.molliq.2017.11.170
Keywords
Low salinity water flooding; Wettability; Contact angle; Zeta potential; Surface complexation modelling
Funding
- Open Fund of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University-China) [PLN201603]
- Sandia National Laboratories
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Wettability of oil/brine/rock system is a fundamental petro-physical parameter, governing the subsurface multiphase flow behaviour, thus affecting hydrocarbon recovery. However, understanding the controlling factor(s) which drives the process is incomplete. Therefore, a detailed examination and characterization of reservoir surface forces as well as pore-surface chemistry are of vital importance. We combined contact angle, zeta potential and surface complexation modelling to demonstrate that DLVO theory and surface complexation modelling predict the same wettability trends. Moreover, we introduced Z* parameter (Z* = vertical bar Z(oil/brine) + Z(brine/rock)vertical bar) to manage low salinity water flooding, thus mitigate the uncertainty of low salinity effect. (C) 2017 Elsevier B.V. All rights reserved.
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