Wellbore Cementing Additives

OCR – 482

OCR – 3183

Phosphonate-type long and short term setting retarders

Advantages

• Long and short term setting retarder
• Effective at low concentrations
• Linear dosage-retardation relationship at application temperature range 
• Effective at temperatures up to 150 °C (300 °F)
• Excellent mechanical and shear stability

WCD – 2513

Polycarboxylate  cement dispersant

Advantages

• Highly effective at low concentrations
• Lowered slurry viscosity yields reduced pump pressure requirements
• Slightly delays cement setting
• Reduces cement shrinkage
• Compatible in all API cement classes
• Effective at temperatures up to 150 °C (300 °F)
• Excellent mechanical and shear stability

OCF – 181

High-temperature cementing fluid loss additive

Advantages

• Highly effective at low concentrations
• Effective in low, medium and high-density slurry systems
• Effective in fresh, mixed, and salt-saturated water systems
• Highly compatible with other cementing additives
• Compatible in all API cement classes
• Effective at temperatures up to 200 °C (400 °F)
• Excellent mechanical and shear stability

WCA – 913

Powder cement antifoam

Advantages

• Cost-effective cement anti-foam
• Prevents air entrainment and reduces foam in cement systems
• Improved density control for a more accurately mixed slurry
• Compatible in all API oilfield cement classes