A GRADE OIL WELL CEMENT

 

Test

unit

standard

Usual result

Ignition lost

%

3.0

0.6

Insoluble

%

0.75

0.18

magnesium oxide

%

6.0

2.1

sulfur trioxide

%

3.5

2.9

tricalcium silicate

%

  /

/

tricalcium aluminate

%

  /

/

Tetra calcium aluminoferrite + 2 times tricalcium aluminate

%

  /

/

sodium oxide to show total sodium oxide

%

  /

/

water cement ratio

 

0.46

0.46

Soundless (autoclave expansion)

%

  /

/

specific area

m2/kg

280

337

Free fluid content

%

  /

/

 

45oC 26.7MPa)

15-30 min consistency

BC

30

14

Consistency time

min

90

99

62oC 51.6MPa

15-30 min consistency

BC

  /

/

Consistency time

min

/

/

Anti pressure

strength

38 oC  normal pressure, 8h

MPa

1.7

7.2

38 oC  normal pressure, 24h

MPa

12.4

19.7

77 oC, 20.7MPa, 24h

MPa

  /

/

Note:

 

 

 

 

 

go back