The influence of overflush fluid type on scale squeeze life time - Field examples and placement simulation evaluation

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    Abstract

    This paper outlines how developments in the placement software are able to predict the squeeze lifetime when using different overflush fluid types (hydrocarbon overflush vs. seawater overflush). The study present field data from two production wells, each treated with the same aqueous scale inhibitor. The initial squeeze treatment for each well used a diesel overflush to displace the chemical (low water cut wells). Subsequent squeeze treatments to these wells utilised the same inhibitor but with seawater displacement. It is clear from field returns data that the seawater rather than marine diesel improved chemical placement and extended treatment life. The theory behind this phenomenon is be outlined along with the changes to the placement software that can now predict this effect, so allowing more accurate treatment designs to be generated. © 2008 by NACE International.

    Original languageEnglish
    Pages (from-to)83561-835620
    Number of pages752060
    JournalNACE - International Corrosion Conference Series
    Publication statusPublished - 2008
    EventCorrosion 2008 - New Orleans, LO, United States
    Duration: 16 Mar 200820 Mar 2008

    Keywords

    • Brine
    • Inhibitor
    • Model
    • Overflush
    • Scale
    • Squeeze

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