Chemical material Oilfield cementing fluid loss additive
Product Description
Basical characteristics
1.Suitable for dry mixed, not easy to damp and cake and has long expiration period.
2.Slurry system has wide applicable temperature range and it’s resistant to high temperature.
3. Salt resistant. It’s efficient in saturated brine.
4. Slurry system is stable with little free fluid.
5. Slurry system is not retarded, fast strength development.
6. Slurry system has excellent rheological behavior. No adding dispersant required.
Gentle Reminder
1. CG610S-T Fluid Loss Additive is slightly retarded.
2. CG610S-T Fluid Loss Additive easily caked after long storage. Although the performance of product is not affected, the product can not be dry-mixed for the loss of fluidity and inc-
reased the difficult of water-soluble.
3. CG610S-T Fluid Loss Additive dosage should be increased if being used in brine or high temperature system.
4. CG610S-T Fluid Loss Additive has a certain dispersity to cement slurry system, sometimes. it is necessary to add suspending agent to cement slurry system.
Applications
1.Temperature: Lower than 356°F (180°C) (BHCT).
2.Dosage: CG610S-T Fluid Loss Additive generally 1.5-4.0% (BWOC),
recommended amount 1.8% (BWOC, in fresh water system, W/C=0.44).
Cement Slurry Performance
Item
|
Technical Indicator
|
Initial consistency,Bc
|
80°C/45min, 46.5MPa
|
≤25
|
Thickening time,min
|
120~200
|
Fluid loss,ml
|
80°C, 6.9MPa
|
≤50
|
18% Brine fluid loss,ml
|
120°C, 6.9MPa
|
≤150
|
Free fluid,ml
|
80°C, Constant Pressure
|
≤1.4
|
24h Compressive strength,MPa
|
≥14
|
Composition (Fresh Water System):API class G(HSR) 700g;Fresh Water 308g;CG510S-T 12.6g(1.8%);
|
Composition:(18% brine system) API class G (HSR) 600g;silica flour 210g(35%),18% brine 438g;CG510S-T 27g(4.5%);
|