Retarder prolongs the time it takes for cement slurry to thicken, allowing for more time to pump it, which is crucial for a successful cementing operation.
The time it takes for cement slurry to thicken is directly proportional to the amount of retarder added.
The strength of the set cement develops rapidly, ensuring that the top of the sealing section does not become overly thickened.
The product can be used at temperatures below 204°C (400°F, BHCT).
It has good compatibility with polymer fluid loss additives and has a minimal impact on fluid loss performance at high temperatures.
The CH710 series includes L-type liquid, L-A type antifreeze liquid, and S type powder.
The recommended dosage for liquid products is 2.0-8.0% (BWOC), while for powder products it is 0.5-2.5% (BWOC).
CH710 UHT POLYMER RETARDER
WHY CHOOSE CH710 UHT POLYMER RETARDER
Retarder helps extend the thickening time of cement slurry in order to keep it pumpable, which, therefore, ensures sufficient pumping time for a safe cementing project.
Ultimate Thermal Stability: Engineered to perform in extreme BHCT environments up to 204.4℃ (400℉) without thermal degradation.
Precise Pumping Windows: Features a reliable linear relationship between dosage and thickening time, allowing engineers to design precise pumping schedules for deep-well operations.
Right-Angle Thickening (RAT): Ensures a rapid transition from liquid to solid state, minimizing the critical time when the slurry is vulnerable to gas migration.
Silica System Compatibility: Specifically tested for stability in slurries containing 35% silica flour and 6% silica fume, preventing strength retrogression in high-temperature wells.
Optimized Slurry Rheology: Maintains low initial consistency (≤30 Bc) even under extreme pressure (115MPa), ensuring excellent pumpability.
Strength of set cement develops well.
CH710 series contains of L-type liquid, L-A type anti-freezing liquid and S type powder.
Recommended dosage is 2.0-8.0 (BWOC) for liquid products, and 0.5-2.5% (BWOC) for powder product.
PHYSICAL AND CHEMICAL INDICATORS
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CH710S |
CH710L |
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Appearance：White or faint yellow powder |
Appearance：Colorless or faint yellow liquid |
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Bulk Density, g/cm3: 0.80±0.20 |
Density, g/cm3: 1.10±0.05(L), 1.15±0.05(L-A) |
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Water-Solubility: Soluble |
Water-Solubility: Soluble |
CEMENT SLURRY PERFORMANCE
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Item |
Test Condition |
Technical Indicator |
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|
Thickening performance |
Initial consistency, Bc |
180℃/86min，115MPa |
≤30 |
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40-100Bc thickening time, min |
≤40 |
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Thickening time adjustability |
Adjustable |
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Sudden change value of consistency, Bc |
≤10 |
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Free fluid, % |
180℃/86min，115MPa |
≤1.4 |
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Compressive strength for 24h, MPa |
180℃，20.7MPa |
≥14 |
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Composition: API Class G(HSR) 600g, silica flour 210g(35%), silica fume 36g(6%), mixed water 342g (including liquid additives), defoamer 1.8g(0.3%), CH710. |
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Note: The dosage of CH710 is determined under the precondition of adjusting the thickening time range of cement slurry at 180℃ to 230—420 min. |
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PACKING AND STORAGE
The liquid type products should be used within 12 months after production. Packed in 25kg, 200L and 5 US gallon plastic barrels.
The powder type products should be used within 24 months after production. Packed in25kg bag.
Store in a cool, ventilated area. Keep containers sealed to prevent contamination.
Customized packaging is available upon request.
Once expired, it shall be tested before use.
Established in 2006, Tianjin Kelioil Engineering Material and Technology Co., Ltd. is a high-tech enterprise specializing in the independent R&D and large-scale production of oilfield cementing additives.
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