Selvol™ Premiol DWC-50
High performance, “all temperature” technology
Selvol™ Premiol DWC50 is a fluid loss control additive that was designed specifically for high-temperature applications.
Selvol™ Premiol DWC50 is a nonretarding powder that provides fluid-loss control and gas migration control properties for cement slurries at temperatures ranging up to 300 F.
Typical Selvol™ Premiol concentrations range from 0.5% to 1.5% by weight of cement (%bwoc). Concentration will depend on bottom hole temperature and desired slurry density. Selvol™ Premiol DWC50 can be used in slurries with a wide range of densities (15.6 ppg up to 17.1 ppg).
Features
- Brown powder
- Easy to handle
- Dissolves easily under ambient conditions
- Compatible with broad range of additives
- Mixable at high densities
- Adjustable rheology
- Functions at high temperature (150ºC)
- Functions at low temperature (50-60ºC)・z
- Meets industry standards for FLC agents:
- API fluid loss (1000 psi) of < 100 mL/30-min
- PV < 200 cp, YP > 0 lb/100-sq.ft. YP > 0 lb/100-sq.ft.
- Free fluid < 2%
Benefits
Selvol™ Premiol DWC additive works well to 300 F (150 C)
- Powder form
- Meets industry standards for fluid loss control agents
- API fluid loss (1000 psi) of < 100 mL/30-min
- PV < 200 cp, YP > 0 lb/100-sq.ft.
- Free fluid < 2%
- Gas migration control
- Nonretarding
- Compatible with multiple additives
- Mixable at high densities
- Adjustable rheology
- Easy to design
- Environmentally friendly
- Dissolves easily under ambient conditions
- Easy to handle
- Could be used across a large temperature range
- Lower in cost than other high temperature additives
Studies
View slurry designs, Condition A and B Results
- DWC FLC Slurry Designs
- DWC Condition A Results
- Rheology
- Fluid loss
- Free fluid
- Thickening time
- Compressive strength
- DWC Condition B Results
- Thickening time
- Compressive strength
Contact us for more information.on Selvol™ Premiol DWC-50
Application
- Deep well cementing
- Annular gas migration
| Typical Performance for different slurries with Selvol™ Premiol DWC 50 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Temperature | 100 | 150 | 200 | 250 | 250 | 250 | 263 | 300 | 300 |
| Density (ppg) | 17.0 | 17.0 | 17.0 | 16.5 | 16.5 | 16.8 | 16.4 | 16.4 | 16.5 |
| Selvol™ Premiol DWC 50 (%bwoc) | 0.56 | 0.56 | 0.56 | 0.56 | 1.0 | 0.56 | 1.0 | 1.5 | 0.71 |
| API Fluid Loss (ml/30min) | 12 | 20 | 20 | 92 | 44 | 52 | 52 | 70 | 82 |
| Thickening Time (to reach 70 Bc) |
– | – | – | – | 5h12m | – | – | 4h56m | – |
| Free Water (%) at a90F | 1.2 | 2.4 | 0.8 | 0.8 | 2.4 | 2.4 | – | 0.0 | 0.0 |
| Compressive Strength12hr (psi) | – | – | – | – | 1726 | – | 1905 | 1148 | – |
| Compressive Strength24hr (psi) | – | – | – | – | 1823 | – | 2625 | 2113 | – |
| RECOMMENDED SLURRY DESIGN | ||
|---|---|---|
| WELL CONDITION | SLURRY | |
| 7″ Liner | Texas Lehigh Class H Cement | 0.25 gal/sk Kelig-32 |
| 17,000 depth | 35% bwoc 100-mesh silica flour | 4.94 gal/sk fresh water |
| BHST=337 F(169F) | 1.13% bwoc Selvol™ Premiol | Density = 16.5 lb/gal |
| BHST=300 F(149F) | \up0\nosupersubDWC 50 | Yield = 1.39 cu-ft/sk |
| BH Pressure=12,350 | 0.03 gal/sk FP-6L | |
| Rheology | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Temperature | 300 rpm |
200 rpm |
100 rpm |
60 rpm |
30 rpm |
6 rpm |
3 rpm |
PV | YP |
| 80 °F | 510 | 364 | 204 | 134 | 76 | 20 | 14 | 459cP | 264 lb/100ft2 |
| 190 °F | 280 | 194 | 104 | 64 | 34 | 8 | 6 | 51cP | 16 lb/100ft2 |
| Free Water | ||
|---|---|---|
| Temperature | Measured Fluid | Free Water (%) |
| 190 °F | 0 mL | 0.0 |
| Fluid Loss | |||
|---|---|---|---|
| Temperature | Collected Fluid | Time | Fluid Loss |
| 300 °F | 26 mL | 30 min | 52cc/30-min |
| Compressive Strength | |
|---|---|
| Condition | Time |
| 50 psi | 7:44 (hrs:min) |
| 500 psi | 9:03 (hrs:min) |
| 2380 psi | 12:00 (hrs:min) |
| 3548 psi | 24:00 (hrs:min) |
| Thickening Time | |||
|---|---|---|---|
| Condition | Time | Pressure | Temperature |
| Initial | 0 min | 760 psi | 80 °F |
| Fimal | 37 min | 6000 psi | 120 °F |
Time to 70 BC 4:20 (hr:min)
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