Floating bead has a certain degree of activity in the cement slurry. And the main chemical component of floating bead is silica, alumina, and a small amount of ferric oxide, calcium oxide and magnesium oxide. These substances and calcium hydroxide or gypsum in the hydration of cement can be formed to produce compounds with a cementitious property so as to enhance the strength .The use of cenosphere as lightening materials can be prepared to make low density cement slurry of 1.2 g/cm³.Under the condition of the same density, floating bead low density cement slurry has little free fluid content, high cement paste compressive strength and low permeability performance.
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Density Reducer Agent for Oil Well Cement
Product Description :
The main component of CP-52 is floating bead which is after the combustion of pulverized coal, the ash melting and in the role of surface tension mission shrink into a sphere, in fly ash discharged into the water and sharply affected by cooling, forming hollow airtight and lighter than water particles.
Performance Characteristics :
Technical indicators :
| Appearance | Flow ability powder |
| Water content, % | ≤ 0.2 |
| Bulk density, g/cm³ | ≤ 0.50 |
| Fineness ( 0.315mm screen residue ), % | ≤ 10.0 |
| Density, g/cm³ | ≤ 0.80 |
| Cement slurry density, g/cm³ | ≤ 1.6 |
| Free liquid, % | ≤ 1.4 |
| Settlement test, % | ≤ 2.0 |
| Compression strength, MPa / normal pressure, 24h | ≥ 8.0 |
The ingredient of cement slurry in the table is: G-class high-resistance cement, 25% CP-52 ( BWOC ) + 6% CP-53 ( BWOC ) + 1.5% G33S ( BWOS ) + 0.5% USZ ( BWOS ), W/C ( Water-solid ratio ): 0.53, Water quality: distilled water.
Packaging, storage and transportation ：
- Be sacked with three-layer plastics bag, 10kg or 25kg per bag.
- Be kept away from moisture. Stored in cool and dry situation.
- Storage life time is two years.
