CMT-105 dissolves in water quickly owing to its strong hydrophilic property.It can absorb on the surfaces of the cement slurry hydrate to inhibit contact with water and chelate with Ca2+ to prevent crystal nucleus forming early. Therefore, it can retard thickening time.And,it can enhance the last strength of the cement stone because C3A shows weak adsorption performance.
Retarders
Retarder for High Temperature Oil Well Cement Cement CMT-105
CMT-105 dissolves in water quickly owing to its strong hydrophilic property.It can absorb on the surfaces of the cement slurry hydrate to inhibit contact with water and chelate with Ca2+ to prevent crystal nucleus forming early. Therefore, it can retard thickening time.And,it can enhance the last strength of the cement stone because C3A shows weak adsorption performance.
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Product Description
Technical & Engineering Information
CMT-105consists of sulfonate and organic salts.
Appearance: White particles
Suitable temperature:60℃~160℃(BHCT).
It is used in the medium and deep well.It can prolong the thickening time effectively and increase the pumped time.
It can formulate a right angle thickening cement slurry system..
If there is the a settlement phenomenon happened to the cement slurry because of its strong dispersion performance, the appropriate amount of G302 (oil well cement fluid loss additive) can be added to the cement slurry.
Technical Indicators
Item | Indicator |
Appearance | White particles |
Water content,% | ≤8.0 |
Fineness (0.315mm sieve),% | ≤10.0 |
Thickening time min | Adjustable |
Initial consistency , Bc/120℃,73.9MPa,61min | ≤30 |
Transition time,min | ≤40 |
Mutation value of thickening curve，Bc | ≤10 |
Free liquid,% | ≤1.4 |
Compression strength, Mpa/144℃,21Mpa,48h | ≥14 |
The ingredient of cement slurry in the table is: JiaHua G class cement: 594g + silica sand 208g (160~200mesh) + distilled water 333g+GH-9S: 0.9%+G401: 1.2%。
Recommended Treatment
Normal dosage: 0.1%~1.0%(BWOC).
Packing and Storage
CMT-105 is supplied in plastic-lined bags with net weight of 25 kg/bag. Keep it away from extreme conditions such as places wet and humid or direct sunlight.
Shelf life: 2 years.
