- Normal dosage: 0.7% ~ 2.0% ( BWOC ).
- Suitable temperature: 230℉~338℉ ( BHCT ).
- Reduce consistency of cement slurry and improve the rheology.
- Thickening time is adjustable.
- No harmful influence on other properties of cement slurry.
ADDITIVES CATEGORIES
follow us
High Temperature Retarder for Oil Well Cement
Product Description :
GH-II can be absorbed on the surface of the cement slurry hydrate to inhibit contacting with water and chelating with Ca2+ to prevent crystal nucleus from forming early. Therefore, it can retard thickening time.
Performance Characteristics :
Technical indicators :
| Appearance | light yellow or brown powder |
| Initial consistency, Bc | ≤ 30.0 |
| Thickening time, min / 244.4℉, 70MPa, 60min | adjustable |
| Compression strength, MPa / 287.6℉, 21MPa, 48h | ≥ 14.0 |
The ingredients of cement slurry in the table are: G class: cement 594g + Silica sand: 208g ( 160~200 mesh ), Distilled water 333ml, GH-II: 0.7 ∼ 2.0% ( BWOC ).
Packaging, storage and transportation ：
- Be packed with three-layer plastics bags, 25kg per bag.
- Be kept away from damage and leakage in store and transportation.
- Storage life time is two years.
