Barium and strontium sulfate solid-solution scale formation at elevated temperatures

A. C. Todd, M. D. Yuan

    Research output: Contribution to journalArticlepeer-review

    92 Citations (Scopus)


    Barium sulfate scale occurrence is a severe production problem in North Sea oil operations. Barium sulfate is often accompanied by strontium sulfate to form a completely mixed scale called (Ba,Sr)SO4 solid solution. This paper describes a laboratory study carried out at 70°C to examine (Ba,Sr)SO4 solid-solution scale formation in porous media and the formation damage resulting from the mixing of two incompatible waters. The paper is a continuation of the previously reported room-temperature work. Results of experiments carried out at the elevated temperatures again demonstrate that substantial scale deposition can occur in a rock core and can cause considerable decline of rock permeability as a result of concurrent flowing of two incompatible waters.

    Original languageEnglish
    Pages (from-to)85-92
    Number of pages8
    JournalSPE Production Engineering
    Issue number1
    Publication statusPublished - Feb 1992


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