OBC-G90L is a kind of fluid loss additive based on grafted co-polymer of humid acid and AMPS. It has characters like: strong fluid loss control ability, rapid strength development, low free fluid and applicability to different kinds of cement and water.
*It decreases the fluid loss obviously. Generally less than 100 ml. If add the dosage, fluid loss will less than 50 ml.
*Thickening time decreases regularly as temperature rises; No bad influence on strength development of cement stone.
*Not sensitive to dosage, no catastrophe point, can be used in variable density cement slurry system.
Technical data
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Item
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Index
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Appearance
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Black sticky liquid
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Solid content，%
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24-25
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Rheological Property(90℃)
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Φ3≤15/Φ6≤20
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pH
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5~7
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Fluid Loss(90℃，6.9 MPa，30min),ml
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≤60
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| Slurry composition:100% SD”G” cement+44%F/W+4% OBC-G90L+0.25%OBC-X60L |
Post time: Jun-14-2019
