BT-41S Early Strength Additive
Overviews
BT-41S oil well cement early strength agent is a chlorine-free early strength agent, can significantly shorten the setting time, improve the early strength cement, to improve quality and shorten the construction of well cementing cycle; apply to low-temperature shallow wells and adjusted well, especially for low-density cement slurry cementing, both regulate low-density cement slurry thickening time and make paste is stable, without sedimentation and segregation phenomena, and substantially reduce the free water, improve the compressive strength of cement paste. BT-41S oil well cement early strength cement for oil well at all levels in the API, and can with floating beads, bentonite, fly ash, micro silica and other agents to reduce low-density slurry.
Characteristics
1. Appearance: Colorless to light yellow liquid
2. Temperature range: -10℃~150℃ (BHCT)
3. Normal dosage: 1.0%-3.0%(BWOC).
4. Package：25kg/bag
5. Guarantee Period: 3 years
Technical specifications
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Requirement
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Specification
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Thickening time, min/（52℃，25MPa）
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50～240
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initial consistency, Bc
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≤30
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Rate of strength/（52℃，20.7MPa，24h）
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≥0.3
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The ingredient of cement slurry：API Class G cement(HSR)：600g，hollow microsphere ：60g， distilled water：462g，BT-41S：13.2g.
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