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

  • 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)

Products

b_Selvol-PolyvinylAlcohol
b_Selvol-Ultalux
b_Selvol-Ultiloc
b_Selvol-Premiol
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