Investigation of Surface Charge at the Mineral/Brine Interface: Implications for Wettability Alteration
نویسندگان
چکیده
The reservoir rock ismade up of differentminerals which contribute to the overall formation wettability. These minerals in their natural state differ chemistry and structure, thus behave differently an environment varying composition salinity. have direct implications for enhanced oil recovery due water flooding, or wettability alteration long-term exposure brine. With being a complex system multiple minerals, control alterations becomes difficult manage. One dominant mechanisms responsible is mineral surface charge, dependent on pH, fluid (salt type salinity). For first time, charge development barite, dolomite, feldspar native environments (accounting brine complexity) presented. Also, effect oilfield operations (induced pH change) minerals’ studied. This was achieved by using zeta potential measurements. results show that barite dolomite possess positively surfaces seawater, with having near-zero charge. Furthermore, controlled H + /OH ? (pH), electrical double-layer effect, as well ion adsorption mineral’s surfaces. findings provide key insights into role (pH, composition) development. In addition, careful tuning seawater injection could serve operational strategy important negatively charged negate polar crude components. design ion-engineered implemented, reduction Ca 2+ concentration holds modifications. Surface modifications evidenced this study play critical enhance production.
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ژورنال
عنوان ژورنال: Frontiers in Materials
سال: 2022
ISSN: ['2296-8016']
DOI: https://doi.org/10.3389/fmats.2022.891455