A GRADE OIL WELL CEMENT
|
Test |
unit |
standard |
Usual result |
|
|
Ignition lost |
% |
¡Ü3.0 |
0.6 |
|
|
Insoluble |
% |
¡Ü0.75 |
0.18 |
|
|
magnesium oxide |
% |
¡Ü6.0 |
2.1 |
|
|
sulfur trioxide |
% |
¡Ü3.5 |
2.9 |
|
|
tricalcium silicate |
% |
¡Ü / |
/ |
|
|
tricalcium aluminate |
% |
¡Ü / |
/ |
|
|
Tetra calcium aluminoferrite + 2 times tricalcium aluminate |
% |
¡Ü / |
/ |
|
|
sodium oxide to show total sodium oxide |
% |
¡Ü / |
/ |
|
|
water cement ratio |
|
0.46 |
0.46 |
|
|
Soundless (autoclave expansion) |
% |
¡Ü / |
/ |
|
|
specific area |
m2/kg |
¡Ý280 |
337 |
|
|
Free fluid content |
% |
¡Ü / |
/ |
|
|
45oC 26.7MPa) |
15-30 min consistency |
BC |
¡Ü 30 |
14 |
|
Consistency time |
min |
¡Ý 90 |
99 |
|
|
62oC 51.6MPa |
15-30 min consistency |
BC |
¡Ü / |
/ |
|
Consistency time |
min |
/ |
/ |
|
|
Anti pressure strength |
38 oC normal pressure, 8h |
MPa |
¡Ý 1.7 |
7.2 |
|
38 oC normal pressure, 24h |
MPa |
¡Ý 12.4 |
19.7 |
|
|
77 oC, 20.7MPa, 24h |
MPa |
¡Ý / |
/ |
|
|
Note: |
|
|
|
|