Spender-350
When cement slurries containing Spender-350 suspending aid are heated to temperatures greater than 150°F (65.5°C), the material yields to suspend downhole solids.Spender-350 suspending aid is effective at bottom-hole temperatures (BHTs) between 150° and 350°F (65.5° and 176.6°C). Required concentrations depend on several factors, such as water-to-cement ratio and the presence of potassium chloride (KCl). Under normal circumstances, however, the necessary concentration of Spender-350 suspending aid should not exceed 0.5% by weight of cement (BWOC).
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