Investigation of Amourphous Deposits and Potential Corrosion Mechanisms in Offshore Water Injection Systems

Violette Eroini, Mike Christian Oehler, Britt Kathrine Graver, Anthony Mitchell, Kari Lønvik, Torben Lund Skovhus

    Publikation: Bidrag til bog/antologi/rapportKonferenceartikel i proceedingpeer review

    Abstract

    Increasing incidence of amorphous deposits in both production and water injection systems has caused considerable problems for offshore oil fields. Amorphous deposits, which are a widely recognized, but often poorly explained phenomenon, are typically comprised of both organic (biological or hydrocarbons) and inorganic material, but with compositions that vary considerably. One recurrent form of deposits, found in offshore water injection flowlines and wells, consisting mainly of magnetite as the corrosion product, was further investigated with the objectives of explaining its formation and assisting in prevention or remediation. It is proposed that the deposit formation, observed in offshore water injection systems treated with nitrate, is initiated by formation of a nitrate reducing biofilm promoting under deposit corrosion by activity of sulphate reducing and methanogenic prokaryotes, this in turn generating iron hydroxide and green rusts which are then mineralized through biotic or abiotic mechanisms to magnetite
    OriginalsprogEngelsk
    TitelNACE - International Corrosion Conference Series
    Antal sider11
    UdgivelsesstedNew Orleans
    ForlagNational Association of Corrosion Engineers International
    Publikationsdato26 mar. 2017
    Sider3752-3762
    ISBN (Elektronisk)978-151084034-8
    StatusUdgivet - 26 mar. 2017
    BegivenhedNACE Corrosion 2017 - New Orleans, USA
    Varighed: 26 mar. 201730 mar. 2017

    Konference

    KonferenceNACE Corrosion 2017
    LandUSA
    ByNew Orleans
    Periode26/03/1730/03/17
    NavnNACE International Corrosion Conference Series
    Vol/bind6

    Emneord

    • Byggeri, miljø og energi

    Citationsformater