High early special oil-well cement
Product Description
Commercial Name
Oil Well Cement, OWC
Type
Sulfate Resistant(HSR)Moderate Sulfate Resistant(MSR), High
Specification
As per China GB10238-1998 Standard and USA API Spec. 10A Standard
1.Chemical Analysis
|
Item
|
Standard Value
|
|
MSR
|
HSR
|
|
MgO
|
6.0% Max
|
6.0% Max
|
|
SO3
|
3.0% Max
|
3.0% Max
|
|
Loss On Ignition (LOI)
|
3.0% Max
|
3.0% Max
|
|
Insoluble Residue
|
0.75% Max
|
0.75% Max
|
|
C3S
|
48%-58%
|
48%-65%
|
|
C3A
|
8.0% Max
|
3.0% Max
|
|
Total Alkali (R2O=0.658K2O+Na2O)
|
0.75% Max
|
0.75% Max
|
|
C4AF+2C3A
|
/
|
24% Max
|
2. Physical Analysis
Mixing Water(mass fraction of cement): 44%
Free Fluid Content: 5.9% Max
Compressive Strength(8hours at temp. 38C, Atm. pressure): 2.1MPa(or 300PSI) Min;
Compressive Strength(8hours at temp. 60C, Atm. pressure.): 10.3MPa(or 1500PSI) Min;
Consistency(15-30minutes stirring period): 30Bc Max;
Thickening Time: 90 minutes Min, 120 minutes Max
Application
Class G OWC is used as basic oil well cement from surface to 2440m depth. It has the characteristics of sulfate resistant. It can be used together with accelerator for setting or set-retarding admixture.It is suitable for the larger range of well depth and temperature.
Packing
Plys craft paper and compound bag, 50kg/bag, and /or 1MT, 1.5MT big bag.
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