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les additifs de cimentation
CG212
  • Manuel d'exploitation
  • MSDS
  • Norme professionnelle

  

SUMMARY

1、 CG212 fluid loss additive is a synthetic polymer which is capable of effectively reducing water loss filtering from the slurry to porous formation during cementing process.

2、  Specially designed for lightweight cement slurry system (1.2-1.6g/cm3) and normal density cement slurry with strong dispersity.

3、  Generate thickening effect on cement slurry, enhance its suspension stability and prevent sedimentation.

4、  The lightweight cement slurries applied with FLA CG212 products exhibit good thickening performance.

5、  Fast compressive strength development of set cement.

6、  Used below temperature of 180℃(356℉, BHCT).

7、  Applicable mixing water: from fresh water to salt-saturated water.

8、  Compatible with other additives.

9、  CG212 series consists of L-type liquid, L-A type anti-freezing liquid, S-P type high purity powder, S-D type dry-mixed powder and S-T type dual-use powder.


PHYSICAL AND CHEMICAL INDICATORS

Type

Appearance

Density, g/cm3

Water-Solubility

CG212L

Colorless or faint yellow liquid

1.10 ± 0.05

Soluble

CG212L-A

Colorless or faint yellow liquid

1.15 ± 0.05

Soluble

Type

Appearance

Bulk Density, g/cm3

Water-Solubility

0.315mm Residues, %

CG212S-P

White or faint yellow powder

0.70±0.20

Soluble

<15

CG212S-D

Grey powder

0.90±0.10

Partly soluble

<15

CG212S-T

White or faint yellow powder

0.90±0.10

Soluble

<15

RECOMMENDED DOSAGE

Type

CG212L(-A)

CG212S-P

CG212S-D

CG212S-T

Dosage range in the lightweight cement slurry (By Weight of Blend)

4.0-8.0%

1.5-3.0%

2.5-6.0%

2.5-6.0%

Dosage range in the cement slurry with strong dispersity (BWOC)

3.0-8.0%

0.6-2.5%

1.5-5.0%

1.5-5.0%

CEMENT SLURRY PERFORMANCE

Item

Test Condition

Technical Indicator

Density of the lightweight cement slurry, g/cm3

25, Atmospheric Pressure

1.35±0.01

Density of Dyckerhoff cement slurry with strong dispersity, g/cm3

1.85±0.01

Fluid loss,

ml

Fresh water system

80, 6.9MPa

≤80

18% salt water system

120, 6.9MPa

≤150

Thickening performance

Initial consistency, Bc

80/45min, 46.5MPa

≤30

40-100 Bc thickening time, min

≤40

Rheological performance

Cement slurry with strong dispersity

Plastic viscosity(PV), cPs

80, Atmospheric Pressure

≤150

Yield point(YP), Pa

15–30

Lightweight cement slurry

Plastic viscosity(PV), cPs

≤100

Yield point(YP), Pa

5–20

Free fluid, %

80, Atmospheric Pressure

≤1.4

24h compressive strength, MPa

Lightweight cement slurry

≥5

Dyckerhoff cement slurry with strong dispersity

≥14


STANDARD PACKAGING AND STORAGE

1、  The liquid type products should be used within 12 months after production. Packed in 25kg, 200L and 5 US gallon plastic barrels.

2、  S-P/D type powder products should be used within 24 months and S-T type powder product should be used within 18 months after production. Packed in20kg bag.

3、  Customized packages are also available.

4、  Once expired, it shall be tested before use.


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