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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
0102030405
GH-III High Temperature Retarder for Oil Well Cementing
description1
Product Description
GH-III can adsorb onto the surfaces of cement hydrates to inhibit contact between cement and water, and chelate calcium ions to prevent premature crystal nucleation. In this way, it effectively retards the hydration of cement slurry.
Characteristics
Composed of lignosulfonates, organic salts, and other compounds.
Recommended dosage: 0.1%–3.0% (BWOC).
Effective at 110℃–200℃ (BHCT).
Significantly extends thickening time, increases pumpability, and enables formulation of right-angle thickening cement slurry systems in medium-deep and deep wells.
Reduces slurry consistency and improves rheological properties.
Preferred for dry mixing. For wet mixing, the mixing water should be heated with steam.
Technical Specification
| Items | Specification | |
| Appearance | Free-flowing solid without agglomeration | |
| Water content,% | ≤8.0 | |
| Fineness (0.315mm sieve),% | <15.0 | |
| Thickening time( 120℃ .73.9MPa.61min), min | ≥120.0 | |
| Initial consistency( 120℃ .73.9MPa.61min), Bc | ≤30.0 | |
| Mutation value of thickening curve, Bc | ≤10.0 | |
| Extension value of thickening time, min | ≥60.0 | |
| Dosage sensitivity, % | ≤25.0 | |
| Temperature sensitivity, % | ≤20.0 | |
| Transition time( 120℃ .73.9MPa.61min), min | ≤40.0 | |
| Free liquid(120℃),% | ≤1.4 | |
| Compressive strength( 144℃ .21MPa.24h), MPa | ≥14.0 | |
Packing, Storage
Packed in woven bags with inner plastic liner or three-layer composite bags, 25kg per bag.
During transportation,Protect the packages from moisture and damage . Store in a cool, dry place.
Shelf life time is two years.
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