G TYPE OIL WELL CEMENT

 

Test

unit

standard

Usual result

Ignition lost

%

3.0

0.5

Insoluble

%

0.75

0.32

magnesium oxide

%

6.0

4.3

sulfur trioxide

%

3.0

2.3

tricalcium silicate

%

48 65

55

tricalcium aluminate

%

 3

0

Tetra calcium aluminoferrite + 2 times tricalcium aluminate

%

  24

/

sodium oxide to show total sodium oxide

%

  0.75

0.54

water cement ratio

 

0.44

0.44

Soundless (autoclave expansion)

%

  /

/

specific area

m2/kg

/

/

Free fluid content

%

  5.90

3.82

 

52oC 356MPa)

15-30 min consistency

BC

30

11

Consistency time

min

90 120

103

/

15-30 min consistency

BC

/

/

Consistency time

min

/

/

Anti pressure

strength

38 oC  normal pressure, 8h

MPa

2.1

4.7

60 oC  normal pressure, 8h

MPa

10.3

12.1

Note:

 

 

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