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 35。6MPa) |
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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