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).
Summary
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).
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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Package and storage
The liquid products should be consumed within a year of their manufacture.
The powder products should be used within two years of their production.
We offer custom packaging options.
If the products have expired, they must be tested before use.
