- GH-9S consists of sulfonate and organic salts.
- Appearance: White particles
- Normal dosage: 0.1% ~ 1.0% ( BWOC ).
- Suitable temperature: 60℃ ~ 180℃ ( BHCT ).
- It is used in the medium and deep well. It can prolong the thickening time effectively and increase the pumped time. It can formulate a right angle thickening cement slurry system.
- If there is the a settlement phenomenon happened to the cement slurry because of its strong dispersion performance, the appropriate amount of G302 ( oil well cement fluid loss additive ) can be added to the cement slurry.
ADDITIVES CATEGORIES
follow us
Retarder for High Temperature Oil Well Cementing
Product Description :
GH-9S dissolves in water quickly owing to its strong hydrophilic property. It can absorb on the surfaces of the cement slurry hydrate to inhibit contact with water and chelate with Ca2+ to prevent crystal nucleus forming early. Therefore, it can retard thickening time. And it can enhance the last strength of the cement stone because C3A shows weak adsorption performance.
Performance Characteristics :
Technical indicators :
| Items | Specification |
| Appearance | White particles |
| Water content, % | ≤ 8.0 |
| Fineness ( 0.315mm sieve residue ), % | ≤ 10.0 |
| Thickening time | Adjustable |
| Initial consistency , Bc / 120℃, 73.9MPa, 61min | ≤ 30.0 |
| Transition time, min | ≤ 40.0 |
| Mutation value of thickening curve, Bc | ≤ 10.0 |
| Free liquid, % | ≤ 1.4 |
| Compression strength, MPa / 144℃, 21MPa, 48h | ≥ 14.0 |
The ingredient of cement slurry in the table is: JiaHua G class cement: 594g + silica sand 208g ( 160~200 mesh ) + distilled water 333g + GH-9S: 0.9% + G401: 1.2%
Packaging, storage and transportation ：
- Be sacked with three-layer plastics bag, 25kg per bag.
- Be kept away from moisture, Stored in cool and dry situation.
- Storage life time is two years.
