In oilwell cementing, air entrainment during high-energy mixing can lead to inaccurate slurry density, pump cavitation, and decreased compressive strength. Our CX series liquid defoamers are high-efficiency chemical additives specifically designed to eliminate existing foam and inhibit foam regeneration caused by surfactants, fluid loss agents, or dispersants.
By maintaining a stable slurry density, these agents ensure the integrity of hydrostatic pressure throughout the cementing operation, particularly in high-pressure or deep-water environments.
Our high-efficiency oilwell cementing defoamers are designed to quickly eliminate air bubbles and prevent foam regeneration during the mixing of cement slurries. By controlling air entrainment, these additives ensure accurate slurry density measurements and prevent pump cavitation, even when using high-performance surfactants and fluid loss additives.
Rapid Defoaming: Quickly eliminates surface foam and entrained air during the mixing process.
Antifoaming Persistence: Provides long-lasting inhibition to prevent foam re-occurrence during pumping and displacement.
Density Stability: Ensures a density improvement of $\ge 0.02 \, g/cm^3$ compared to un-treated slurries.
Inert Properties: Specifically formulated to have minimal impact on thickening time, fluid loss, or rheological properties of the cement slurry.
Application Guidelines
Recommended Dosage: Typically 0.2% – 0.8% (BWOC). Actual dosage should be optimized via laboratory pilot tests based on the foaming intensity of other additives.
Usage Method: Can be added directly to the mix water or injected into the cement slurry during the mixing process.
Storage: Stable for 12 months when stored in original, sealed 25kg or 200L plastic barrels.