General description
TRCF-282S is a water-soluble, AMPS-based polymer fluid-loss reducer. Aggregation of its molecular chains reduces filter-cake permeability. It is widely used in salt-bearing formations (salt concentrations up to 36%) and high-temperature wells. It is compatible with retarders, dispersants and CaCl2.
Performance characteristics
- TRCF-282S is a polymerization modifier made from AMPS, low-molecular-weight amides and polyhydroxycarboxylic acids.
- Suitable for fresh water through to saturated brine.
- Fluid loss: <150 mL API FL.
- Good solubility and compatibility.
- Compatible with any class of cement.
- Good cement slurry stability, with free fluid close to zero.
- Short thickening transition time, with a nearly right-angle thickening profile.
- Suitable for cement slurries of any density.
- Has some retarding effect on cement slurries.
Physical and chemical properties
| Property | Specification |
|---|---|
| Appearance | Greyish-white powder or granules |
| Density (20 ± 2°C), g/cm³ | 1.73 ± 0.03 |
| Fineness (residue on a 0.315 mm sieve), % | 15.0 max. |
Technical specifications
| Property | Specification |
|---|---|
| Moisture, % | 8.0 max. |
| Fluid loss (80°C, 6.9 MPa, 30 min), mL | 80 max. |
| Initial consistency (80°C, 46.5 MPa, 45 min), Bc | 30 max. |
| Transition time, min | 40 max. |
| Thickening linearity, Bc | 10 max. |
| Free fluid, % | 1.4 max. |
| Compressive strength (102°C, 21 MPa, 24 h), MPa | 14.0 minimum |
Recommended cement slurry composition: Class G cement 800 g; water 352 mL; TRCF-282S dosage 1.2%. | |
Application
Application temperature range: 30–200°C (BHCT).
Dosage: 1.0–3.0% (BWOC).
Packaging
Packed in 25 kg moisture-proof bags or as requested by the customer.
