Pore water of bazhenov formation: Quantity and composition

E. S. Kazak, A. V. Kazak, N. N. Bogdanovich

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

    2 Citations (Scopus)

    Abstract

    The paper presents the results of integrated experimental analysis of residual pore water content in a set of isolated core samples of the Bazhenov Formation taken from a well at one of the oil and gas fields in West Siberia, Russia. Additionally it includes measured values of cation exchange capacity and pore water composition of Bazhenov rocks obtained via composition analysis of water extracts. It was found that the free (presumably capillary) water content is 0.32÷2.53 wt%, the residual pore water content is 0.79÷3.70 wt%. The total amount of Na+, K+ and Cl- in the pore water of the Bazhenov Formation is determined to be 10.65÷79.21 g/L. The measured values of cation-exchange capacity (10.5÷14.72 meq/100 g of rock) correlate well with clay minerals content. Obtained results of the laboratory study was integrated with data of standard well logging suite. Free and residual water content was found to have low degree of correlation to each of logging channels in the suite. This circumstance indicates that it is impossible to get reliable estimate of Bazhenov Formation water saturation from standard well logging dataset, but also that obtained laboratory result is an independent variable of petrophysical model of Bazhenov reservoir rocks.

    Original languageEnglish
    Title of host publicationEAGE/SPE Joint Workshop on Shale Science 2017
    Subtitle of host publicationProspecting and Development
    PublisherEuropean Association of Geoscientists and Engineers, EAGE
    ISBN (Electronic)9781510839342
    Publication statusPublished - 2017
    EventEAGE/SPE Joint Workshop on Shale Science 2017: Prospecting and Development - Moscow, Russian Federation
    Duration: 10 Apr 201711 Apr 2017

    Publication series

    NameEAGE/SPE Joint Workshop on Shale Science 2017: Prospecting and Development

    Conference

    ConferenceEAGE/SPE Joint Workshop on Shale Science 2017: Prospecting and Development
    Country/TerritoryRussian Federation
    CityMoscow
    Period10/04/1711/04/17

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