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Cementing Slurry
- Fluid Loss Additive Series
- Retarder Series
- Accelerator Series
- Dispersant Series
- Anti-Gas Migration Agent Series
- Defoamer Series
- Lightening Agent Series
- Weighting Agent Series
- Strength Enhancer Series for Light Weight Slurry
- Pipeline Flushing Agent Series for Spacer
- Spacer Agent Series for Spacer Liquid
- Anti-Contamination Agent for Completion Fluids
- Drilling Fluid
- Oil Recovery Chemicals
- 2-Acrylamide-2-Methylpropanesulfonic Acid
GH-3S Retarding Type Fluid Loss Additives for Oil Well Cementing
description1
Product Description
The molecular chain bundles of water-soluble high-molecular-weight polymers aggregate to reduce the permeability of the cement slurry filter cake. The introduction of dicarboxylic acid groups and sulfonate groups in the polymer enhances the retarding performance.
Characteristics
Modified by polymerization of AMPS, low molecular amide, polyhydroxy carboxylic acid, etc.
Temperature resistance: 30~200℃.
Salt resistance: fresh water to saturated salt water.
Water loss reduction performance: APIFL below 100ml.
Water solubility: easily soluble in water.
General dosage range: 1~3%(BWOS).
Good compatibility with other additives.
Compatibility with cement: suitable for all levels of oil well cement.
The cement has good stability and the free liquid is close to zero.
The thickening transition time of cement slurry is short, close to right-angle thickening.
Suitable for low density, conventional density and high density cement slurry system design.
Control the loss of cement slurry and have the characteristics of correspondingly prolonging the thickening time.
Technical Specification
Cement slurry formula: G grade oil well cement, fluid loss reducer GH-3S 1.5% (BWOC), water-cement ratio 0.44, cement slurry density: 1.90±0.01g/cm3, water quality: distilled water or drinking water.
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Items |
Specification |
|
Appearance |
Free flowing powders and granules |
|
Water content,% |
≤8.0 |
|
Fineness (0.315mm sieve),% |
≤15.0 |
|
Initial consistency,Bc(80℃,46.5MPa,45min) |
≤30.0 |
|
Thickening linear mutation value,Bc |
≤10.0 |
|
Time of 40Bc～100Bc,min |
≤40.0 |
|
Thickening time extension value,min |
≥30.0 |
|
Filter loss,ml(80℃,6.9MPa,30min) |
≤150.0 |
|
Free liquid,% |
≤1.4 |
|
Compression strength,MPa(102℃,21MPa,24h) |
≥14.0 |
Packing, Storage
Stored in plastic bag, 25kg/bag, or packed according to the request of clients.
Kept away from fire, damage and leakage in store and transportation.
Storage life time is two years.
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