Application of nanoparticles in chemical EOR

    Результат исследований: Глава в книге, отчете, сборнике статейМатериалы для конференциирецензирование

    3 Цитирования (Scopus)

    Аннотация

    More than 50% of origin oil in place are still trapped in reservoir after primary and secondary oil recovery. Thus, there is a need in tertiary recovery or enhancing oil recovery (EOR) methods, which include chemical flooding, steam injections etc. It is well known that chemical flooding is one of the most perspective and widely used method for enhancing oil recover. However, chemical species such as surfactants or polymers are very sensitive to high temperature, salinity and pH. Indeed, injecting alkaline solutions into wellbore aid in increase of brine solution salinity and pH, that may cause polymer destruction. This fact makes their use in oil recovery difficult. Replacing an alkaline solution with nanoparticles is a promising way of getting more stable surfactant and polymer solutions in typical reservoir conditions. In the present work, we investigated the influence of adding nanoparticles to surfactant solutions for improving their properties. Due to amphiphilic properties, surfactants are using as lowering interfacial tension (IFT) agents between brine solution and oil. The problem with surfactants injection is the high adsorption of surfactant molecules on the rock surface. Usually, to avoid high adsorption, alkaline solutions are added, but in sandstone formations alkali may cause polymer destruction and in carbonate formations - precipitation of several unfavorable inorganic scales. First, in this work, was shown that the addition of a low nanoparticles concentration to anionic (sodium alpha-olefine sulfonate) and cationic (erucyl bis(hydroxyethyl)methylammonium chloride) surfactants results in the decrease of IFT between solutions and oil. Then, the adsorption measurements were performed on brine solutions in a presents of different nanoparticles concentrations. The amount of adsorbed surfactants molecules decreases upon addition of nanoparticles, which is due to hydrophobic interaction between nanoparticles and molecules parts. Such reduction is almost the same with alkaline solution injection. However, a higher concertation of alkali is necessary to prevent a high adsorption on rock surface. Thus, the addition of nanoparticles to surfactant solutions retains their responsibilities to reduce IFT and, in addition, decreases adsorbed amount of surfactant molecules. As a result, less surfactant and polymer will be needed to reach low IFT and high viscosity of brine solution.

    Язык оригиналаАнглийский
    Название основной публикацииIOR NORWAY 2017 � 19th European Symposium on Improved Oil Recovery
    Подзаголовок основной публикацииSustainable IOR in a Low Oil Price World
    ИздательEuropean Association of Geoscientists and Engineers, EAGE
    ISBN (электронное издание)9789462822092
    DOI
    СостояниеОпубликовано - 2017
    Событие19th European Symposium on Improved Oil Recovery: Sustainable IOR in a Low Oil Price World, IOR NORWAY 2017 - Stavanger, Норвегия
    Продолжительность: 24 апр. 201727 апр. 2017

    Серия публикаций

    НазваниеIOR NORWAY 2017 - 19th European Symposium on Improved Oil Recovery: Sustainable IOR in a Low Oil Price World

    Конференция

    Конференция19th European Symposium on Improved Oil Recovery: Sustainable IOR in a Low Oil Price World, IOR NORWAY 2017
    Страна/TерриторияНорвегия
    ГородStavanger
    Период24/04/1727/04/17

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