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CG811 Ultra High Temperature Fluid Loss Additive for Oil Well Cement
Product Overview
CG811 is a synthetic polymer-based Ultra High Temperature Fluid Loss Additive specifically developed for demanding oil well cementing applications. It effectively reduces fluid loss from cement slurries while maintaining slurry stability under high and ultra-high temperature conditions. As one of the advanced Oil Well Cement Additives offered by Kelioil, CG811 is particularly suitable for deep well and ultra-deep well cementing projects.
This Fluid Loss Additive can be used in normal-density and lightweight cement slurry systems and performs effectively in fresh water, salt water and saturated brine environments. CG811 is designed to work synergistically with high-temperature retarders, helping maintain stable slurry properties throughout the cementing process.
With excellent temperature resistance, salt tolerance and compatibility, CG811 provides a reliable solution for challenging cementing operations where conventional Cementing Additives may not deliver sufficient performance.
Product Benefits
Ultra High Temperature Resistance
Suitable for cementing applications with BHCT up to 204°C (400°F), making it ideal for deep and ultra-deep wells.
Excellent Fluid Loss Control
Effectively minimizes fluid loss and improves cement slurry integrity during placement.
Saturated Brine Compatibility
Maintains stable performance in fresh water, salt water and saturated salt water systems.
Improved Slurry Stability
Helps prevent shear thinning at elevated temperatures and contributes to long-term slurry stability.
Technical Characteristics
- Synthetic polymer Fluid Loss Additive for oil well cementing.
- Applicable to high and ultra-high temperature wells.
- Suitable for normal-density and lightweight cement slurry systems.
- Applicable mixing water ranges from fresh water to saturated salt water.
- Helps prevent high-temperature shear thinning and maintain slurry stability.
- Excellent compatibility with high-temperature retarders.
- Recommended for deep well and ultra-deep well cementing projects.
- Available in liquid and powder forms.
Technical Performance Data
| Item | Specification |
|---|---|
| Product Type | Synthetic Polymer Fluid Loss Additive |
| Applicable Temperature | Up to 204°C (400°F BHCT) |
| Applicable Water System | Fresh Water to Saturated Salt Water |
| Recommended Dosage (Liquid) | 2.0–6.0% BWOC |
| Recommended Dosage (Powder) | 0.6–2.5% BWOC |
| Powder Appearance | White or Faint Yellow Powder |
| Liquid Appearance | Colorless or Faint Yellow Liquid |
| Powder Bulk Density | 0.80 ± 0.20 g/cm³ |
| Liquid Density | 1.10 ± 0.05 g/cm³ (L) 1.15 ± 0.05 g/cm³ (L-A) |
| Fresh Water Fluid Loss | ≤50 mL @ 150°C, 6.9 MPa |
| 18% Salt Water Fluid Loss | ≤150 mL @ 120°C, 6.9 MPa |
| Initial Consistency | ≤30 Bc @ 150°C / 73 min / 94.4 MPa |
| 40–100 Bc Thickening Time | ≤40 min |
| Free Fluid | ≤1.4% |
| 24-Hour Compressive Strength | ≥14 MPa @ 150°C |
Applications
- High Temperature Oil Well Cementing
- Ultra-High Temperature Cementing Operations
- Deep Well Cementing Projects
- Ultra-Deep Well Cementing Projects
- Lightweight Cement Slurry Systems
- Normal-Density Cement Slurry Systems
- Saturated Brine Cement Slurry Systems
- Onshore and Offshore Oilfield Cementing Operations
Compatibility
CG811 demonstrates excellent compatibility with high-temperature retarders and other Oil Well Cement Additives commonly used in cement slurry formulations. Compatibility testing is recommended during slurry design development and optimization.
Packaging & Storage
Liquid products are packed in 25 kg containers, 200 L drums and 5 US gallon plastic barrels. Powder products are supplied in 25 kg bags. Customized packaging options are available according to customer requirements.
Liquid products should be used within 12 months after production, while powder products should be used within 24 months. Products should be stored in a cool, dry and ventilated environment. Expired products should be tested before use.
Why Choose Kelioil
- Professional manufacturer of Oil Well Cement Additives with years of industry experience.
- Complete product portfolio including Fluid Loss Additives, Retarders, Dispersants, Defoamers and Spacer Additives.
- Technical support for cement slurry design and optimization.
- Reliable product quality with strict quality control procedures.
- Competitive pricing and responsive global customer service.
- Proven application experience in conventional, deep well and ultra-deep well cementing projects.
FAQ
What is CG811 Fluid Loss Additive used for?
CG811 is used to control fluid loss and improve cement slurry stability in high-temperature and ultra-high temperature oil well cementing operations.
What is the maximum operating temperature of CG811?
CG811 is suitable for applications with bottom hole circulating temperatures up to 204°C (400°F BHCT).
Can CG811 be used in saturated brine systems?
Yes. CG811 is designed for fresh water, salt water and saturated salt water cement slurry systems.
Is CG811 suitable for deep well cementing?
Yes. CG811 is specifically recommended for deep well and ultra-deep well cementing projects where high-temperature performance is required.
What is the recommended dosage of CG811?
The recommended dosage is 2.0–6.0% BWOC for liquid products and 0.6–2.5% BWOC for powder products, depending on slurry design and well conditions.
Does CG811 affect slurry thickening time?
CG811 is designed to provide effective fluid loss control while maintaining acceptable slurry rheological and thickening properties when properly formulated.
Is CG811 compatible with other Cementing Additives?
Yes. CG811 exhibits excellent compatibility with high-temperature retarders and most commonly used oil well cementing additives.
Related Products
- CG610 General Fluid Loss Additive
- CG310 Fluid Loss Additive
- CG214 Anti-Sedimentation Fluid Loss Additive
- CG117 Dispersant
- CH710 Ultra High Temperature Retarder
Conclusion
CG811 Ultra High Temperature Fluid Loss Additive is a high-performance solution for demanding oil well cementing applications. Combining excellent fluid loss control, superior temperature resistance, saturated brine compatibility and outstanding compatibility with other Cementing Additives, CG811 helps operators achieve reliable cementing performance in deep well and ultra-deep well environments. As a premium member of the Kelioil Oil Well Cement Additives portfolio, CG811 delivers the technical reliability required for modern high-temperature cementing operations.
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