D TYPE OIL WELL CEMENT

Test

unit

standard

Usual result

Ignition lost

%

3.0

0.4

Insoluble

%

0.75

0.14

magnesium oxide

%

6.0

4.6

sulfur trioxide

%

3.0

2.9

tricalcium silicate

%

  /

/

tricalcium aluminate

%

  3

0

Tetra calcium aluminoferrite + 2 times tricalcium aluminate

%

  24

/

sodium oxide to show total sodium oxide

%

  /

/

water cement ratio

 

0.38

0.38

Soundless (autoclave expansion)

%

  /

/

specific area

m2/kg

/

/

Free fluid content

%

  /

/

 

45oC 26.7MPa)

15-30 min consistency

BC

30

16

Consistency time

min

90

>90

62oC 51.6MPa

15-30 min consistency

BC

  30

17

Consistency time

min

100

111

Anti pressure

strength

110 oC  ,20.7MPa, 8h

MPa

3.5

4.3

110 oC  , 20.7MPa, 24h

MPa

13.8

39.8

77 oC, 20.7MPa, 24h

MPa

  6.9

24.5

Note:

 

 

 

 

 

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