1. fluid loss control additive
features:
downhole temperature: 40 ℃ ~ 110 ℃.
slurry api water loss: ≤ 50ml.
dosage: 0.8% ~ 1.2%.
2. anti salt fluid loss control additive
features:
downhole temperature: 60 ℃ ~ 160 ℃.
slurry api water loss: ≤ 50ml.
dosage: 4.0% ~ 6.0%.
3. anti-gas migration additive
features:
downhole temperature: 60 ℃ ~ 120 ℃.
the transitional time from 48pa to 250pa(static gel strength): ≤ 20min.
dosage: 5.0% ~ 8.0%.
4. dispersant
features:
downhole temperature: 20 ℃ ~ 150 ℃.
slurry flow pattern index n: ≥ 0.6.
dosage: 0.8% ~ 1.5%.
5. cement retarders
features:
downhole temperature: 60 ℃ ~ 150 ℃.
good compatibility.
dosage: 0.1% ~ 1.5%.
6. cement expanding additives
features:
downhole temperature: 60 ℃ ~ 160 ℃.
expansion rate: 0.5 ~ 1.0%.
dosage: 2.0% ~ 3.5%.
7. accelerator
features:
compressive strength (after 8 hours): ≥ 3.5mpa.
dosage: 2.0% ~ 4.0%.
8. spacer
features:
spacer density: 1.12～2.10g/cm3.
dosage: 8.0% ~ 10%.
|
