Oil Cementing ChemicalsCurrent page: Home > Oil Cementing Chemicals
SUMMARY
- ST210S-T-AR is applicable in medium and low temperature system.
- ST210S-T-AR has salt resistance. It is applicable in brine system.
- ST210S-T-AR is suitable for both water and dry mixed and has no special requirement on the quality of mixing water.
SPECIAL ATTENTIONS
- ST210S-T-AR may influence the top strength of the set cement when the curing temperature is lower than the bottom hole cycle temperature.
- When ST210S-T-AR is used above 95 ℃, the dosage of ST210S-T-AR will be significantly increased and the top strength may be influenced.
- ST210S-T-AR is easily caked after long storage. Although the performance of product is not affected, the product cannot be dry mixed for the loss of fluidity and it became difficult for ST210S-T-AR when dissolving in the water.
PHYSICAL AND CHEMICAL INDICATORS
| Appearance |
Bulk Density g/cm3 |
Water-Solubility |
0.315mm Sieve(45 mesh) Residues % |
|
white powder |
1.30±0.10 |
100% |
<12 |
CEMENT SLURRY PERFORMANCE
| Item |
Test Condition |
Technical Indicator |
|
Initial consistency, Bc |
80℃/45min, 46.5MPa |
≤30 |
|
40-100Bc thickening time, min |
≤40 |
|
|
Thickening time adjustability |
Adjustable |
|
|
Thickening curve |
Normal |
|
|
Free fluid , % |
80℃, Atmospheric Pressure |
≤1.4 |
|
24h compressive strength, MPa |
80℃, 20.7MPa |
≥14 |
|
Composition: API Class G(HSR)700g; mixed water 308g; defoamer 1.4g(0.2%);ST210S-T-AR. |
||
|
Remarks: the dosage of ST210S-T-AR is determined under the precondition of adjusting the thickening time range of cement slurry at 80℃ to 130—270 min. |
||
APPLICATIONS
Application temperature: generally 131-203℉(55-95℃) (BHCT).
Dosage: ST210S-T-AR generally 0.2-3.0%(BWOC).
PACKING
ST210S-T-AR is packed with 25kg bag. It can also be packed according to user requirements.
