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.
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.
