Coupled adsorption/precipitation tests with a phosphonate inhibitor and carbonate substrate

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    6 Citations (Scopus)

    Abstract

    A series of static adsorption/precipitation tests has been carried out to examine the behaviour of Diethylenetriamine Penta Methylene Phosphonic (DETPMP), a commonly used commercial scale inhibitor (SI), when in contact with brine and calcium carbonate (CaCO3). These tests are carried out at pH 2 and pH 4 and at a range of DETPMP concentrations from 0ppm to 5000 ppm. In these tests, the addition of disaggregated CaCO3 to the brine/SI mixture was accompanied by a rise in the pH and a commensurate precipitation of a DETPMP-Ca complex. Apparent adsorption displayed a common 2:1 trend indicating that no adsorption took place, only precipitation. These results changed somewhat when selected divalents (Ca and Mg) were removed from the brine.
    Original languageEnglish
    Title of host publicationSPE International Conference and Exhibition on Oilfield Scale 2014
    Place of PublicationRichardson, Texas
    PublisherSociety of Petroleum Engineers
    Pages408-419
    Number of pages12
    ISBN (Electronic)9781613993255
    ISBN (Print)9781632665911
    DOIs
    Publication statusPublished - 2014
    EventSPE International Oilfield Scale Conference and Exhibition - Aberdeen, United Kingdom
    Duration: 14 May 201415 May 2014

    Conference

    ConferenceSPE International Oilfield Scale Conference and Exhibition
    CountryUnited Kingdom
    CityAberdeen
    Period14/05/1415/05/14

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