All Days 2015
DOI: 10.2118/174222-ms
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Selection of Non-damaging Phosphonate-Based Scale Inhibitors for Field Application in a Reservoir Containing Reactive Iron Minerals

Abstract: Core flood testing of phosphonate-based scale inhibitors in reservoir sandstone containing iron minerals revealed potential formation damage caused by unmodified acid phosphonates, which are reactive toward the iron minerals. The mechanism of formation damage was shown to be due to dissolution and re-precipitation of iron phosphonate species, together with fines mobilized (also thought to be due to dissolution effects) which propagated some distance through the core, leading to pore throat blockages. In an exa… Show more

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