Direct wettability characterization of the carbonate reservoirs using different microscopic techniques

A. Ivanova, N. Mitiurev, A. Cheremisin, A. Orekhov, A. Vasilev, M. Hairullin, I. Afanasiev

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    2 Citations (Scopus)

    Abstract

    Carbonate reservoirs, particularly limestones and dolomites, represent more than a half of world’s oil resources. Typically, carbonate rocks have complex structure and consist of a variety of minerals. For this reason, the characterization of such reservoirs is extremely complicated. Nevertheless, for successful oil production, it is very important to describe all mechanisms and parameters that control oil recovery. One of such essential factors needed to be measured is wettability. Formation wettability plays major role in fluids distribution through the porous media and, as result, determines the oil production. Moreover, wetting properties influence capillary pressure effects, water- and chemical flooding. Therefore, performing the wrong assumption of formation wettability may cause an unexpected oil recovery decrease and wellbore damage. Herein, we present the wettability measurements for carbonate samples from oil fields by the direct visualizing of phases interfaces using environmental SEM-imaging method. Water micro-sessile droplets were formed on samples surfaces due to the special thermodynamic conditions, which were created in a microscope chamber using Peltier table. Wetting properties were analyzed by observing contact angles between water droplets and surfaces. It was shown that carbonates have mixed wetting properties even at microscale.

    Original languageEnglish
    Title of host publication80th EAGE Conference and Exhibition 2018
    Subtitle of host publicationOpportunities Presented by the Energy Transition
    PublisherEuropean Association of Geoscientists and Engineers, EAGE
    ISBN (Electronic)9789462822542
    DOIs
    Publication statusPublished - 2018
    Event80th EAGE Conference and Exhibition 2018: Opportunities Presented by the Energy Transition - Copenhagen, Denmark
    Duration: 11 Jun 201814 Jun 2018

    Publication series

    Name80th EAGE Conference and Exhibition 2018: Opportunities Presented by the Energy Transition

    Conference

    Conference80th EAGE Conference and Exhibition 2018: Opportunities Presented by the Energy Transition
    Country/TerritoryDenmark
    CityCopenhagen
    Period11/06/1814/06/18

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