| Classification: | Chemical Auxiliary Agent |
|---|---|
| Usage: | Oil cementing additives |
| Type: | retarder |
| Place of Origin: | China (Mainland) |
| Purity: | 100% |
| Other Names: | oil cementing retarder |
Quick Details
Specifications
ST510S-D-AR HIGH TEMPERATURE RETARDER
SUMMARY
l ST510S-D-AR is applicable in high temperature system.
l ST510S-D-AR is suitable for dry mixed and has no special requirement on the quality of mixing water.
l ST510S-D-AR has good top strength when used in long formation sealant of well cementation.
l ST510S-D-AR is not easy to damp and cake and has long expiration period.
SPECIAL ATTENTIONS
l ST510S-D-AR may influence the top strength of the set cement when the curing temperature is lower than the bottom hole cycle temperature.
PHYSICAL AND CHEMICAL INDICATORS
|
Appearance |
Bulk Density g/cm3 |
Water-Solubility |
0.315mm Sieve (45 mesh) Residues % |
|
gray powder |
1.20±0.10 |
partly |
＜12 |
CEMENT SLURRY PERFORMANCE
|
Item |
Test Condition |
Technical Indicator |
|
Initial consistency, Bc |
120℃/61min, 73.9MPa |
≤30 |
|
40-100Bc thickening time, min |
≤40 |
|
|
Thickening time adjustability |
Adjustable |
|
|
Thickening curve |
Normal |
|
|
Free fluid , % |
≤1.4 |
|
|
24h compressive strength, MPa |
120℃, 20.7MPa |
≥14 |
|
Composition: API Class G(HSR) 600g;silica flour 210g(35%);silica fume 36g(6%);mixed water 342g;defoamer 1.8g(0.3%); ST510S-D-AR. |
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|
Remarks: the dosage of ST510S-D-AR is determined under the precondition of adjusting the thickening time range of cement slurry at 120℃ to 170—330 min. |
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APPLICATIONS
Application temperature: generally194-302℉(90-150℃) (BHCT).
Dosage: ST510S-D-AR generally 1.0-4.0% (BWOC).
PACKING
ST510S-D-AR is packed with25kgbag. It can also be packed according to user requirements.